学习笔记：The Best of MySQL Forum

http://mysql.rjweb.org/bestof.html

I have tagged many of the better forum threads. 'Better' is based on how good I thing the answer was. ( I wrote many, but not all, of the better answers. ) 
-- Rick James, MySQL Geek

The Best of the Best

Thread	Tags
Function and indexes	index
is good have single index an composite index on same field	compound index, index, LIKE
GROUP causing Using Temporary Using Filesort	summary tables
Question about indexes	index, PRIMARY KEY
Optimize table and fragmentation	defragmentation, OPTIMIZE TABLE
Optimize Inner Join With WHERE BETWEEN dates	index, optimizer
Slow query. Why is it slow?	index examples
Multiple Tables Split By Date	big
When to use separate tables.	phone numbers
Jet Profiler says I'm slow....	pagination
Does LIMIT 1 without ORDER BY ID bring the record with minimum ID?	index, InnoDB
Problem with a query performance	INDEX, not using index
User defined fields in a schema	EAV, JSON, key-value
Large Table Architecture	summary
Thai Characters display as ???	charset
any cheat-sheet style documents?	password, root
random sorting - what is the quickest method?	random
Data model metadata design and data driven joins	ER, key value
How much space take each column in table	datatype size
Efficient MySQL for pagination of large amounts of data on website	pagination
next/previous on a date select query	left off
index performance on "limit" condition	index, limit
Trying to retrieve data where a variable is in an array	commalist
adding index to a table	ALTER
Slow Mysql optimizer	slow
New to InnoDB (want to convert from MyISAM)	myisam vs innodb
Selecting max for each day	top N
JOIN vs Denormalize table vs Vertical partition	normalize, vertical partition
HELP! making choises on Performance - Storage engine - Caching	myisam vs innodb
select limit records from 600000 records	rand
Partitioning with range(to_days) issue	partition, summary
INNO DB performance problems with temporary tables	join, union
limiting rows returned	group by trick
DATETIME vs. INT(11)?	index, TIMESTAMP vs DATETIME
Memory mirror for read-only tables?
Top n Scores	top N
Slave is lagging from master	replication lag
How does group by algorithm works?	group by trick
Preferable Index Length	index
How to create partition on existing table?	partition
User password being modified as a result of grant statements?	grant
MySql 4.1 optimization search poor performance	group by, limit
How do I combine 3 queries into one	LAST_INSERTED_ID, on duplicate key
Deadlock occuring since setting a unique index.	on duplicate
Advice on redundant indexing	index
Select * from MyISAM table returns PK order / filesort order	30%, range, table scan
Key_Buffer_Size	key_buffer
linked data	key value, rdf
Optimising max_heap_table_size & tmp_table_size	memory, tmp tables
Database Design for huge set of data	data warehouse, summary
Need Help - Server was hacked	login, root
Counters	summary
image display problem from mysql database	image
Converting latin1 charset to utf8	charset
using GROUP_CONCAT	group by
Performance LONGTEXT / LONGBINARY	768, blob, parallel
Column for mutiple and not-predefined values	comma
Unsure about query... random column?	group by
Performance with select query that joins two tables one with 45MM and another with 12MM	classic
Solving table locking issues	locks, summary tables
Alternative to FOUND_ROWS()	count, found_rows, innodb, pagination
Having tough time with spanish/catalan characters in my PHP/MySQL app	charset
Processor at 99.9%, memory at 5%. Configuration help?	key_buffer
random reads	filing cabinets, myisam, perf
Design approach for summary table by 3 items	summary
Query performance question (using index slows down?)	pagination
How to scale MySQL Cluster to support PB storage	big, petabyte, sharding
Query performance on database with joins	pagination
Complex Select with Min/Max Syntax	group by trick
problem with concat() distinct() min() and GROUP BY	group by
Your PHP server doesn't have the MySQL module loaded or you can't use the mysql_(p)connect functions	php install
Storage capacity	limits
InnoDB log group capacity error	memory, text, varchar

Lots more

Tags are alphabetical, but it may help to use the browser's search. Threads with multiple tags show up multiple times.

Tag	Thread
1005	Soln. for MySql 1005 (Can't create table)
	ERROR 1005 (HY000): Can't create table 'Azienda.#sql-697_c9' (errno: 150)
10060	Solotion of errno: 10060(1)
	Connect remote server using ODBC connection
10061	Running MySQL with no Internet
	Can't connect to Mysql 127.0.0.1 (10061), before never had the problem. What coudl have caused that?
1016	Replication error?
1067	How do I change this table to get it to load
	Erroe #1067
10x	Slow Query stuck on "Sending Data"
12	Got error 12 from storage engine
1206	Question about merging big tables?
121	Foreign Key Error 121
1236	Replication fun
134	error 134
1364	MYSQL Error n4 1364 (authentication string no default) while configuring
1366 string error	data type and Character set for DUTCH language
139	Got error 139 from storage engine
150	Soln. for MySql 1005 (Can't create table)
	errno: 150 - foreign key constraint was not correctly formed
	ERROR 1005 (HY000): Can't create table 'Azienda.#sql-697_c9' (errno: 150)
	Help! Foreign Key error from SQL generated by workbench modelling
	ERROR 1005: Can't create table (errno: 150)
	Alter table add foreign key causes can't create table error
16kb	Estimate table size
2 ranges	Index with two date fields using comparison operators
2-field index	problem for selecting range of date between 2 dates
2002	ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (61)
	MySQL error, please help
	ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
	MySQL startup - ERROR 2002 (HY000)
	Could socket failure be related to InnoDB errors?
	how do you fix error 2002
	MySQL Error Nr. 2002
	ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)
2006	Running Large scripts from command line
2d	Simple query seems to be ignoring date index
3 machines	Multi-Master replication in MySQL 5.1
30%	Select * from MyISAM table returns PK order / filesort order
4g	MAX_ROWS on Partitions
5.5 regression	performance degrades. why???
50x	index is not used why?
5x	how to optimize this query
64-bit	32-bit BIGINT value
768	Is BLOB stored in InnoDB buffer pool?
	Performance LONGTEXT / LONGBINARY
:=	Using a Parameter in Load Data Infile Command (Instead of direct filename)
	compare two rows in the same column
	RANK() emulator?
	Trying to Update Table with Rank...
accents	accent sensitivity in fulltext search
	Searching with accented words
access	Configure Database
	Access 97 to MySQL
	Microsoft Access & mySQL
	Database Import
	Db access/privileges philosophy
	MS Access transfer to MySQL on host server
	Converting Access to MySQL
	help please
acid	COUNT(*) very slowly in large InnoDB table
	what's the purpose of InnoDB
	How does MySQL ensure ACID nature of transactions ?
ad	Database Sharding at Netlog, with MySQL and PHP
add pk	Adding primary key afterwards
ai	Error Duplicate entry - Master-Slave replication
aliases	speed of query/can index help?
allow_invalid_dates	Load data infile not working
alter	Table fragmentation and optimization
	Reverse Index columns
	How to clean up database after deleting records
	enable keys, force sort, not keycache
	Will increaseing table size affect current data?
	Large table designissue
	Require suggestion for changing character set in Master master replication setup
	adding index to a table
	Performing table inserts/selects while a alter-table query is running?
	Migrating from latin1 to utf-8
	Adding columns to live tables
	does innodb table need 'optimize table'?
alter enum	Need to change datatype for an enumerated field
alter on dual master	Alter table with million of records - estimate how long does it take
alter table	Index re-creation after composite primary key change
alter via copy	seeking for better solution to change indexed column size
	Alter large table(MYISAM)
	Partitioning and multiple threads
analyze	ANALYZE TABLE not working correctly
	Mysql does not use index, even if example is trivial?
and2union	Index structure
apparmor ubantu	Problem with LOAD_FILE
application lock	Table Row Locking
aramaic	Best collation to use for ancient languages
attributes	Theoretical Database Table Structure
audio player	MySQL + PHP Audio Reference
audit trail	Audit Trail Help...again
	Snapshot Table -- over the long run
	auditing changes via replication
	upon retrieving the last insert id get the table name?
auditing	How to audit entire database?
auto-normalize	Importing a Tab-Delimited file into multiple tables
autocommit	turning autocommit off by default
	Replication Slave update question
autocommit=off	How to identify which connection has locked a particular table
autocomplete	understanding the best design method for links table
autoextend	innodb_data_file_path
	Automatic Extension Question
auto_increment	AUTOINCREMENT & ROLLBACK
	autoincrement without primary key
	auto_increment behaviour
	AUTO_INCREMENT value increases by powers of two after INSERT ... SELECT
	insert ignore ... auto increment value
	Automatic field in a table
	Suggestable Engine
	autoincrement id missing when i do load data local into file
	MySQL Workbench 5.2.35: Error 1064: You have an error in your SQL syntax
	Resetting Auto Increment?
	table with multiple primary key
auto_increment gap	Problem with "false" increment in InnoDB using a table with UNIQUE constraint
auto_increment gaps	Can Autoincrement find the next free number ?
b*tch	Is this database structure correct? Please help oh wise ones :)
back tics	how to drop database named as database
backslashes	Correct syntax to search for backslashes "\"
backup	mysql with innodb and myisam
	MySQL Replication
	Replicating a big db
	MySQL Enterprise Backup Remotely
	Replication setup (for the first time)
backup options	How can we ensure if mysql backups are consistent
backup replay	restoring a DB from slave to the master in a replicated 2 node environment
bad design pattern	select top x with a union
banking	Ensuring data integrity
batch insert	Batch Insert
batch normalization	Alternate for Varrays in Oracle
batched inserts	How to improve the insertion speed
	how to update with array (containing arrays) into table? or inserting? hot to combine with escaping?
bbwc	Mixed engines within same database
benchmark	Anyone know where a recent MySQL benchmark vs others can be found?
benefical subquery	Larger than expected tmp files querying InnoDB format database
best practice	Real-world DB schema
between	Slow query
big	About performance for Database of millions of records
	Questions about performance for huge table (100M+ rows)
	A lot of rows for a very specific task
	How to scale MySQL Cluster to support PB storage
	use index on a view
	Up to 1 million rows Performance + Design Help
	MySQL Appropriate for 1T- 5T DW ?
	Multiple Tables Split By Date
bigint	Performance Issue
bind-address	ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)
binlog	Binlog not being updated...
	DRBD and Binary logs
binlog off end	Could not parse relay log event entry
binlog-do-db	slave replicates databases it should not
binlog-row-event-max-size	ERROR 1153 (08S01) at line 356771902 in file: 'mysqlmulti-bins.sql': Got a packet bigger than 'max_allowed_packet' bytes
blob	slow queries and high % of wait I/O
	Performance LONGTEXT / LONGBINARY
	MySQL blob performance
	STORE FINGER PRINT IN MYSQL
block splits	Row size computation
book	Kimball book recommendations & Schema question
	Online/Free Book Recommendations
	Is MySQL the tool I need?
	Getting started, need WINDOWS information
book recommendations	Reading list suggestions for query skills
	Any tips for an MS SQL DBA trying to break into MySQL?
	Tips to close a reference book
boolean	Strange result from DELETE query - can anyone explain?!
brag	Queries to limit only this month and next month
btree	Is this model correct?
	COUNT(*) very slowly in large InnoDB table
	Index re-creation after composite primary key change
bucketizing	Counting occurences of data falling betwen a series of limits (buckets)
buffer	INSERT/UPDATE within transactions (autocommit=0)
buildins	Why does "in ()" give syntax error?
bulk	Bulk collect
	Best primary key or index
bulk insert	Bulk Insert Prepared Statement
bulk_insert_buffer_size	Importing huge dump files into mysql
c api	Which strategy is better to traverse a big table?
cache	Basic Standards of Mysql server variable setting
caches	re writing database
	Linking to a LUT more than once
cannot connecct	Unable to connect to database: Can't connect to MySQL server on '[database server]' (4)
canonical string	Charset and Collation Question
case range	Optimizing a Query on a Very Large Table
changelog	How much data to save
	auditing changes via replication
changes	Database upgrade character column sizes may have changed
char vs int	Best primary key or index
char vs varchar	CHAR vs VARCHAR
	Query to find values that are the same in multiple tables
char(0)	What is quicker for searching out of these two?
character set filename	How to get database encoded name in mysql 5.6
charset	Problem inserting german and french characters
	Having tough time with spanish/catalan characters in my PHP/MySQL app
	Can replicating between versions cause crashed tables?
	Converting latin1 charset to utf8
	Weird utf-8 encoding problem using webserver that does not occur in command line client
	cannot change character set
	MYSQL doesn't 'see' accents
	Encoding problem...
	connection collation
	Thai Characters display as ???
chcp	Character set for French Candian ?
chcp 65001	Proper display of special latin1 characters in Powershell / MySql client ?
checksum	CHECKSUM TABLE on InnoDB
chinese collation	Chinese sorting and filtering on an table with charset UTF-8
chinese regexp	how to retrieve only Chinese text from a table?
chunking big operation	optimising a create table as select
chunks	How to process very large result set from a dynamic cursor
circular	mysql very slow after million insert/delete
cjk	Asian language problems
classic	Any way to optimize join to find rows without conditional foreign rows?
	Performance with select query that joins two tables one with 45MM and another with 12MM
	I have queries that sporadically take a very long time
	Portal Database design help
	3 Table Join (indexed) results in where-temp-filesort
	JOIN, LIMIT, ORDER performance problems
clone slave	replication - slave copy - unclear points
	Moving dbs to new server
cloud	partioning question
cluster	Query optimization question
	MySQL training on Cluster and High Availability
collation	Unproper order of sorting in utf8. Collation?
	"Duplicate entry" error using utf8_unicode_ci
	Will changing Default Collation on live BSD box cause any problem?
	A tip: Avoiding implicit charset matching errors
	Can someone please explain this misbehavior?
collation benchmark	Case sensitive vs non case sensitive performance
collation on sp	Illegal mix of collations
combining diacriticals	Searching database for strings with Swedish characters
comma	search comma separated db column
	Split Values by comma and Check in another Table?
	Column for mutiple and not-predefined values
	Iterating through SQL table
	parse by delimiter and search a data field?
	Setting up some new tables
	arrays or joins for multiple values?
comma-join	"In" Statement Returning 6 Records…overall SQL statement returns 22
commalist	PREG_Match?
	Trying to retrieve data where a variable is in an array
	Having an argument about table design
commalist normalization	Need Help W/ Query
commandline	error logging
complex	Slow SELECT on two tables
compound gt	Showing recordsets from tables with one (main table) to many (secondary table) relationship
compound index	Range on primary key using secondary index.
	Index on Datetime Col is not used When Where Clause combines two or more predicates
	Multi-Column indexes
	is good have single index an composite index on same field
computer science	Delete Query
concat	CONCAT Dates returning "BLOB" or '?'
conditional average	sum and display issue
connections	mysql max_connections
	Database Pool Size
	Site closes when two many connections
consecutive values	Highest interval between two date same table
construct queries	Basic update statement
continuous compound index	Newbie question about correct settings to achieve better performance
conversion	Mixed encoded DB Latin1 & UTF8
convert_tz	converting timezone for data in specific table
cores	The result of MySQL's high concurrency and very large data performance benchmark.
	InnoDB Plugin Version 1.0.3 for MySQL 5.1.30/31/32 Released
	Maximize MySQL Performance on DBT2 Benchmark with Virtualization Technology on T5240 Server
	Something awfull with latest mysql on latest FreeBSD
	Help make my big new server fast
	Intra-Query Parallelism in MySQL Server
	MySQL + 2 x Intel Xeon (6 cores) performance problem
	Queries on MyISAM
	Why does MySQL's performance decrease when queries are executed in parallel?
count	Alternative to FOUND_ROWS()
	COUNT(*) very slowly in large InnoDB table
	any faster select count(*)
	Slow queries with very large table
count the disk hits	is it good add 3 index on a table with 30,000 insert in every 15 minutes?
count(*) caching	count(*) speed in InnoDB
covering index	Strange performance with JOIN/COUNT
cp850	Characters not getting stored
cpus	MySQL 20x faster on RHEL 4 over Solaris 10?
crash	Replicating server has died
critical read	separate the Query and direction
	Three Node Replication (US West, US East and Europe)
	MySQL Master(Active) - Master(Active) Replication
csv	Export Recordset query to a file nightly? Ubuntu and MySQL
current_user	Can see Databases can't see tables
cursor	Cursor usage with Prepared Statements
custom collation	Problem with LIKE on index over custom utf8 collation, 5.0
dag	Unary many-to-many relationships
data directory	data file location
data masking	Tools for Scrubbing Entire Mysql Database
data models	Car Parts Catalogue Database design
data warehouse	Kimball book recommendations & Schema question
	Online/Free Book Recommendations
	Slow Inserts
	Database Design for huge set of data
	Inserting 5000 samples per sec in real time
	mysql TABLE tuning and performance
	Query optimization or better table design?
	innodb or myisam for logging
	MySql table disappears at random after multiple TRUNCATE queries
database	One big DB or two not-too-big DBs? FKs across DBs are slower?
database layer	how to upgrade database schema in M-M environment
datatype size	Estimating disk space required for MySQL DB
	Confused about integer disk space
	Estimating Index Size on Innodb Tables
	How much space take each column in table
datatype storage	how table rows are stored at the file level
	physical bytes
data_free	file_per_table=1 question
	fragmentation in innodb index
data_length	Automatic Extension Question
date	UPPER with substring is not working
	Query Question
	MySQL Date Query issue
	how to convert timestamp value to string in MySql
date modulo	Grouping by hour, day, weekday, week, month and year
date range	Query taking a lot of time if there is no record in table
date reformat	Casting Varchar to a date
datetime	Time series database design
	Calculating TIME ELAPSED SINCE in days OR hours OR minutes
	missing data after partitioning - bug?
datetime in partition	let table grow for two months then delete first month
datetime vs timestamp	let table grow for two months then delete first month
	store SET time_zone as part of a VIEW statement
daysequence	Query results from one table against a list created by another
db stats	Deployment Statistics....
dbd	dbd::mysql not in ppm on windows
deadlock	mysql_ping before transaction commit
deadlock vs lock_wait_timeout	hard to test select for update scenario
deadlocks	lock block deadlocks
decimal	Is it possible to get MORE results by adding an AND clause to a SQL query?
	size of Decimal(18,4)
	Math function logarithm
default	How do I change this table to get it to load
	Should I add a default value for a field that is set to NOT NULL
definer	View problems when updating to 5.5 from 5.1
defragmentation	Optimize table and fragmentation
delete	mysql very slow after million insert/delete
	Statement/row questions
	would like best table/index structure advice?
	Performing multiple updates and selects
	Very slow DELETE, UPDATE, INSERT on a new server
	CPU Usage during DELETE and OPTIMIZE
	MYsql getting crash
	Cursor usage with Prepared Statements
	Replication lag when no primary key on InnoDB
delimiter	error using divide operator in function in mysql 5.5.9
delta	Query to find difference between data
design	Simple Database Design Problem
diff	need help with cross referenced tables
dimensions	Optimizing a query so that the smaller table is handled first
dims	appropriate database design and query
directory structure	Changing Data directory
disaster recovery	Mysql SAN Related Scenarios
disaster recovery topologies	How to configure multiple instances on 2 hosts?
disk hits	delete timing-feasible?
disk usage	Old databases that are no longer required
dissect explain	optimize request with order by and limit
distinct	distinct vs. group by
dll	Fatal error: Call to undefined function mysql_connect() in C:\Program Files\Apache Group\Apache2\practice\testsql.php on line 17
	Apache/MySQL/PHP Problem
dns	Slow Connection
	How to troubleshoot slow response from MySQL
double	MySQL Workbench 5.2.35: Error 1064: You have an error in your SQL syntax
double encoding	Character encodings issues with php, mysql, apache
	fulltext search with utf8 characters (umlaut) with 5.1
double press	Unwanted multiple inserts: Should I use insert or replace into?
double range	Optimizing a query so that the smaller table is handled first
drbd	DRBD and Binary logs
drupal	temp table or query for API
dual master	MySQL Master/Master Replication
	MySQL settings for multiple server setup
	MySQL & SAN
	Replicating server has died
	What is Best solution for DR and 24*7 using two identical systems, cluster is not available here(hw)
	Multi Master and Slave MySQL servers
	Is this a suitable plan
	Masters in HA and slaves in LB
	Multi-master & Multi data-paths
	Replication & failover with 4 servers
	Can anyone give an advise in Multy-master structure
	Replication after dump
	Mysql 2 server replication setup with fail over
dual master maintenance	Performance maintaining a live database
dual master setup	Master database crashed
	Solving problems with mysql replica
dump	take incremental backup
dump master	re syncing a broken replicatoin
duplicate key	Error Duplicate entry - Master-Slave replication
eah disaster	RE: Academic Paper
eav	Searching by using an index table, efficient queries?
	How to speed up Query with WHERE AND/OR, with Subqueries using IN
	Different data types
	User defined fields in a schema
edge list	relationship query question
either but not both	Compare two tables
encryption	Building Memory Table from AES Encrypted Physical Table
entities	Simple Database Design Problem
	Circular reference
	Database Structure Help
	Learning Management System MySql Database design
enum	ENUM columns and blank values
	using enum as means of compression
enum alternatives	Poblem with a create table Query
enum trick	Correcting spelling errors in an ENUM definition
eq_range_index_dive_limit	Optimizer executes inperformant subquery first
er	Query Performance Problem
	Modeling and Normalizing
	Searching by using an index table, efficient queries?
	school exercise I am suck on
	Database efficiency question
	Data model metadata design and data driven joins
	Simple Database Design Problem
	Circular reference
	Database Structure Help
	DB structure - Managing a collection of books
	My First Database (HELP)
	Learning Management System MySql Database design
	Designing a forum - general design logic question
	Lookup Table with Optional Fields? Null primary key for blanks?
	Problem creating table with 2 primary keys
erd	ERD Design HELP!
error -1	got error -1 while reading table 'tablename'
error 108	InnoDB: File (unknown): 'flush' returned OS error 108. Cannot continue operation
error 150	query not running
	#1005 - Can't create table (errno: 150)
error 24	Replication error?
escaping	delete query doesnt work with php
	replacing (escaping) unescaped apostrophes already in mysql
	"#" symbol inside text of databse
	How do I assign unique id to call data?
ethernet	connect 46 pcs on my pc MySql server
etl	Update more than 30,000 records row by row
	uploading 300+MB files to MySQL db
euro sign	load data infile: "Incorrect string value" with special chars
events	Events: what if server is down?
	Has anyone used "event" in mysql
excel	Connecting to MySQL from Excel 2007
	Import Excel in MySQL??
	LOAD DATA
exchange partition	Partition data backup and restore
exchange partition with table	Is there a SWITCH equivalent in MySQL?
exclusion join	which kind of join?
exit handle	Transaction won't end
expand and contract	Question about LIMIT
explain	Slow select with sub queries
	greatest-n-per-group performace for different data types
	understanding towards Using where; Using temporary; Using filesort is right?
	Help optimizing query/index
failover	Switching to backup DB on error
	Mysql 2 server replication setup with fail over
fast ingestion	MySql table disappears at random after multiple TRUNCATE queries
fast random update	Optimize multiple writes on the same row
federated	How do I find out details of a Server link for Federated tables?
feed processing	uploading 300+MB files to MySQL db
field	Re: MYSQL Sorting IN by orignal order?
file priv	CSV import with mysqlimport
file redirection	Store dump from DB on Server A to Server B (File) and test restore on C
filesort	Query Optimization - order by
	always uses filesort even after adding indexes
	Subquery with range uses filesort
filesystem	databases and log files on separate hard drives
file_per_table	All Innodb tables using seperate ibd, but ibdata1 still being modified?
	TableSpace
filing cabinets	random reads
find id hole	How to create a solid sequence?
firewall	Replication: Connecting Slave and Master
	Error encountered on slave "Waiting to reconnect after a failed master event read"
first partition	I searched table on one partiton, but MySQL scanning two partitons
first slave	Start slave fails
	Initial setup of replication with large tables
	Setting up replication in a Windows Sever 2003 environment
	Replication setup (for the first time)
fixed	Estimate table size
	Text(1024)
	how table rows are stored at the file level
fixed vs dynamic	MYSQL manual using MANY frequently changing Varchar(255)
	Questions related to Row Format, Encoding, and performance
fk	Foreign Key Error 121
	Need help to improve innodb performance
	another fool having problems with FK in InnoDB
flags	Ноw better to store large number of flags?
	best for true or false, Yes or No
float	Bug in the floating point value
	Is it possible to get MORE results by adding an AND clause to a SQL query?
	Math function logarithm
float double decimal	Comparison Between Floating Point Types
float unequal	BINARY operator not working properly
for update	table locking
foreach	write trim into INSERT and SELECT Queries
foreign key	Soln. for MySql 1005 (Can't create table)
	dropping a foreign key constraint
	Why use JOINS when have FK
	ERROR 1005 (HY000): Can't create table 'Azienda.#sql-697_c9' (errno: 150)
	Multiple references of a PK
	Error 1005 Errno 150
	#1005 - Can't create table (errno: 150)
foreign keys	drop all constraints, then reinstate all constraints??? is there a way to do this??
	Can't create table with Foreign Keys - errno:150??
found_rows	Alternative to FOUND_ROWS()
fractional seconds	[SOLVED] DATETIME does not keep fractional seconds (5.6.11)
fragmentation	Table fragmentation and optimization
	Performance increased after mysqldump restoration ?
	does innodb table need 'optimize table'?
ft_min_word_len	Working with short words in full text search
fulltext	match against search won't match strings with a forward slash in them
	accent sensitivity in fulltext search
	Using FULLTEXT index with a boolean on the matched field?
	Seeking advice on setup
	Cascading deletes
	Query not returning result in fulltext search boolean modeeven though records exist
functions good practice	Connecting to MySQL on numerous pages
gap lock	Minimize row locking for update statement
gaps	scanning for data gaps in time series
general log timestamp	No timestamps in general query log
geo	Unused index, slow query
	GEO Search with large table is very slow
grant	One big DB or two not-too-big DBs? FKs across DBs are slower?
	remote access and privilages
	HOW DO CREATED USERS LOG ON MySQL CLI?
	Re: Can't seem to create a new user account
	How to change mysql username from "root" to "apps"
	Make Table or Catalog Read Only
	User password being modified as a result of grant statements?
	MySQL users question
	Why doesn't root get full privileges?
	Revoke privileges from user issue!
	Creating a restricted user account
grant host names	connect as remote server
	Can't connect with non-root user to created database
grant localhost	creating database users
graphing	Building Graphs with MySql data
group by	problem with concat() distinct() min() and GROUP BY
	Unsure about query... random column?
	using GROUP_CONCAT
	MySql 4.1 optimization search poor performance
	distinct vs. group by
	Noob query issue
group by trick	Complex Select with Min/Max Syntax
	Listing threads by newest posts?
	How does group by algorithm works?
	Subquery and JOIN's
	limiting rows returned
	max function
	Help with minimum/group by
	create function help
	select max date in Inner Join
	aggreate data
	query returns unwanted duplicates
	Require help to formulate a query.
	Slow Query
	Assistance required for query with subquery
	Last or Max?
	Unexpected Result when using MAX(id) and GROUP BY
group union	[Query help] Table transformation
groupwise max	max row from table
groupwise-max	select max date in Inner Join
group_concat	multiple rows into one line string with
	Simple statement
group_concat. join	Database efficiency question
guid	SELECT took lengthy of time
	How can I decide which partition type can I chose
	GUID field
guid performance	Deadlock Detection in InnoDB storage engine
ha	MySQL HA 2 instances + iscsi shared data dir
	replication or mirroring?
	When do I start... partitioning?
	Fail Over
hacker protection	How do I assign unique id to call data?
handler	HANDLER statement questions
	Expected query time?
hash	How should I make text column search faster?
having	Simple statement
heartbeat for replication	measuring slave lag without sysdate() - 4.1.13
hide password	Running backup in cron without clear text pw
hierarchy	Return the level and count of a closure table.
	select max date in Inner Join
	Building a widget/graph from mysql view
	Unary many-to-many relationships
	relationship query question
	challenging problem -spliting different values within one field
high cpu	Mysql using 95% of cpu
highwater	Milli and Micro seconds in mysql
hints	Intermittent slow performance
history	MAX_ROWS on Partitions
	Snapshot Table -- over the long run
	Mysql cluster 7.1.5 can't use table partition!
	New to design; how to optimize 3 column single table with high I/O?
holidays	Query results from one table against a list created by another
horizontal partitioning	RAM requirements- new server
hosts file	Slow connection
	How to troubleshoot slow response from MySQL
html	why do I need to set encoding in the browser in order to see Arabic letters
html entities	Storing Special Characters in Table
htmlentities	Problem with fulltext search using encoded german umlauts (strange behaviour of "MATCH(column) AGAINST ('keyword' IN BOOLEAN MODE)")
htmlspecialchars	Something like Server.HTMLEncode for MySQL
huge	Which storage engine?
	load data infile real-time data load
	trillion records?
huge pages	innodb memory usage vs swap
hugepages	sanity check on innodb config
ibd	How to restore innoDB tables without ibdata1 with innodb_file_per_table=1
	TableSpace
	BLOB storage file
ibd recovery	InnoDB Transportable Tablespaces - Recovering Data from Stranded .ibd Files is a Thing of the Past
ibdata	How do we resize ibdata file?
ibdata1	After creating tablespace .ibd, Mysql doesnot start
	Switch to file_per_table using a slave
	Different ibdata files for every database
	mysqldump and import to de-fragment tables
	data_free not empty
	All Innodb tables using seperate ibd, but ibdata1 still being modified?
	changing from 1 big file to file_per_table
	TableSpace
ibdata1 contents	ibdata1 and undo log
iblog	Connection lost
	Different ibdata files for every database
	Innodb Log File Error
id	Real-world DB schema
identifying relationship	Please explain identifying/non-identifying relationships
ie caching	MYSQL appears to not recache Selected table after Insert
ieee754	Sum of doubles giving incorrect value
image	Image database in mySQL
	image display problem from mysql database
	retrieving a photo from mysql database
	saving image in mysql
	User-friendly approaches to displaying subtable data
image as blob	Where are BLOBs useful?
image output	Show images from database
imagecreate	Show images from database
images	Using images with php and sql
img src	Show images from database
implode	loop doesnt seem to run
import	Need to Convert Date Time at Query runtime
impossible position	Got fatal error 1236 from master when reading data from binary log
in	PHPMYADMIN hangs on this query!.HELP!!!!
	Efficient string comparison to a group of values
	Why isn't an index being used here (nested query)
	Optimizer executes inperformant subquery first
in select	Using NOT IN
	Optimizing a query so that the smaller table is handled first
in-list	PHP filesize and storing a big WHERE clause in a variable
incompatibilities	Moving Mysql to a new server
	Re: max(DateField)+C <> max(DateField+C)
index	Re: Large range query stops using indexes
	Slow query on very large table
	index selection
	How does index perform with LIKE?
	how to solve this complex query
	making a row unique
	GEO Search with large table is very slow
	how to optimize this query
	Order by using filesort on where
	Advice on redundant indexing
	Help with optimize SELECT
	does unique index do more than just being a constraint?
	Preferable Index Length
	Mysql does not use index, even if example is trivial?
	DATETIME vs. INT(11)?
	Statistics used by optimizer.
	Concat Occasionally Drops a Character or Two
	Query is so slow
	Index not being used
	Is index needed or not?
	Rebuild Indexes Online after Insert/Update
	combined index ignored
	Multi column indexing question
	index performance on "limit" condition
	Problems with query not using expeced indexes
	Attempt to split big table into smaller one made query slower
	Primary key - link to data ?
	Need help on indexing
	Statistics
	Improving Slow Query
	Indexes: how many, how much?
	Lock wait timeout exceeded; try restarting transaction
	InnoDB to MyISAM
	Query with > 500000 entities in in where clause crashes server
	tables with 3,500,000 rows, indexed but still v slow
	multicolumn index & forcing index to avoid filesort
	COUNT(*) very slowly in large InnoDB table
	performance issue on order by index
	Estimating Index Size on Innodb Tables
	Join Statement with math operation
	Huge row size compared to MyIsam
	CREATE TABLE ignores DATA DIRECTORY option
	Need Database Structure Help
	Size of INDEX_LENGTH is higher than DATA_LENGTH !
	Index recomendations
	Slow query with order by and limit
	11 millions records : more than 30 seconds to retrieve simple request
	Table marked as crashed and last (automatic?) repair failed
	Partition on day of year
	Stop using filesort
	physical bytes
	Best primary key or index
	Problem with a query performance
	indexing
	Help optimizing query/index
	Creating an Index
	Does LIMIT 1 without ORDER BY ID bring the record with minimum ID?
	Understanding MySql optimization of Queries
	Optimize Inner Join With WHERE BETWEEN dates
	Slow insert rate in mysql innodb
	Question about indexes
	is good have single index an composite index on same field
	Function and indexes
index creation	checking status of CREATE INDEX
index design	MySQL not using indexes
	Backup and trimming data idea
index details	how index grows in size
index examples	Slow query. Why is it slow?
index join	ideal indexing for inner join, rowcount of 1
index not used	Indexing is done for single table, but its not working for most of the queries.
index order	Optimization of where clause
index size	I've got two Tables and wonder why a table with less data can have a bigger keysize?
index-10-30	MySQL 5.1.49 - Optimal settings for memory usage
indexing	Looking for understanding of optimizing queries
	Issues with possible duplicate indices on table
	MYISAM INDEX KEY Question
information schema	SHOW VARIABLES: which table holds my.cnf startup varibles?
	Wrong info from Information_schema
information_schema	creating data dictionary
	Procedure is not working
init_connect	Encoding problem
injection	Unique Constraint Using My Own Definition of "Equals"
	Db access/privileges philosophy
inner join	Optimizing query
innodb	evaluating table locking
	ANALYZE TABLE not working correctly
	slow queries and high % of wait I/O
	Reduce Index space
	Alternative to FOUND_ROWS()
	mysql very slow after million insert/delete
	AUTOINCREMENT & ROLLBACK
	Negative consequences of converting to InnoDB?
	Insert into table on duplicate key update - performance issue
	COUNT(*) very slowly in large InnoDB table
	Replication lag when no primary key on InnoDB
	Huge row size compared to MyIsam
	New to design; how to optimize 3 column single table with high I/O?
	Does LIMIT 1 without ORDER BY ID bring the record with minimum ID?
innodb analyze	Different Servers Using Different Index for Same Query on Same Data
innodb blocks	Varchar does it cause data file to continously grow
innodb corruption	Table corruption
innodb count(*)	Slow access to large tables
innodb fragmentation	Is my data fragmented?
	fragmentation in innodb index
innodb free	Can I automatically reuse the free space of a table that in the InnoDB
innodb free space	data_free not empty
	InnoDB File Size
	fragmentation in innodb index
innodb fulltext	MySQL 5.6: InnoDB Full Text Search (FTS)
innodb index	problem about second index on innodb
innodb internals	JemeryCole/Twitter: Deep Dive into InnoDB Internals
innodb io	buffer pool read/write?
innodb log files	Setting innodb_log_file_size disables the innodb engine
innodb pk	Need help to improve innodb performance
innodb primary key	Primary key for referee table.
innodb random dives	can mysql use 2 different execution plans for the same query ?
innodb row size	Row size
innodb semaphore contention	quantifying activity at the buffer pool?
innodb settings	Innodb_buffer_pool_pages_free = 0
innodb size	Automatic Extension Question
innodb transportable tablespac	InnoDB Transportable Tablespaces - Recovering Data from Stranded .ibd Files is a Thing of the Past
innodb vs myisam	InnoDB to MyISAM Disadvantages?
	Innodb v/s Myisam
innodb_buffer_pool_size	Max size of innodb_buffer_pool_size
innodb_file_per_table	poor performance on good hardware
	Can we have different tablespace for indexing in innodb storage engine?
	How to create TableSpace
	Separate databases in separate files
	How to stop a database growing in size on the disk
innodb_flush_log_at_trx_commit	limitation on request per second
	Very slow query for no apparent reason
	MySQL InnoDB performance tuning
innodb_locks_unsafe_for_binlog	Getting "Lock wait timeout exceeded;" when using "for update"
	MySQL 5.6.12 and many deadlock
innodb_log_file_size	Switch off InnoDB logging - Possible?
	Reset Root Password causing ib_logfile issues
	values in my.ini for 2GB RAM
	Unexplained drop in performance?
	innodb_log_file_size
	Correctly setting mysql options for a huge DB with intense trafic
	Power failure and innodb
innodb_log_file_size formula	how to calculate innodb log file size
innodb_max_purge_lag	mysql very slow after million insert/delete
innodb_os_log_written	MySQL Server locks up daily
innodb_stats_sample_pages	More Stable Query Execution Times by Improving InnoDB Statistics
innodb_table_monitor	Foreign Key Error 121
ins	Updating multiple rows with an array using PHP with mySQLi
insert	Slow Inserts
	Inserting 5000 samples per sec in real time
insert on duplicate key	Problem of indexing Country, State , City
insertion speed	Need mysql Configuration Parameters that affects Insertion rate
inserts	Need help to improve innodb performance
	Insert into table on duplicate key update - performance issue
install on windows	Solution: Cygwin and DBD::mysql
installing php	Apache 2.2.22 with PHP 5.2.17 don't connect to MySQL
interactive_timeout	Close conections
into outfile	Export Recordset query to a file nightly? Ubuntu and MySQL
io big	random-access I/O
ip	What data type should I use and what storage engine?
	Help with the best table layout for message board
	Slow query
ip range	Optimize IP Range Join
	optimize IP range join: postgresql is 496 times faster
	update big table cause an excution time out
	How can I optimize this query?
	Keys ignored for larger tables!?
iterative update	Updating 100 million record tables
java time	Storing Java Timestamp (long) in database as BIGINT?
join	Some general questions
	JOIN table USING vd JOIN table ON table_field=another_table_field
	PHPMYADMIN hangs on this query!.HELP!!!!
	trouble figuring out joins, any gurus out there?
	INNO DB performance problems with temporary tables
	nested select
	tables, joins or not, to script or not
	After upgrade from 4.1.22 to 5.1.44 query not working
	JOIN, and LEFT OUTER JOIN: I don't get it
	Join Syntax Confusion
	Difference between two SQL queries
join 101	Need help with a more difficult query
join opt explained	MySQL 5.1.31 -- Same query scans widely different # of rows
join order	can I use two join in a single query ?
join vs subquery	Faster SQL - newbie needs help
	"Optimizing sub queries with joins"
join vs union	Left Join between two large tables too slow!!
joins	Problem with SQL query :(
json	User defined fields in a schema
json for eav	What's the worst that can happen with below database design? Immediately or in the future?
key value	linked data
	Query Optimization
	Create tables: Shall i use one table or different tables in order to store data?
	How best to storing User Profile data
	Help collating multiple rows from multiple tables into a single row
	Large number of columns causing - Unknown Error
	table/query help
	How to speed up Query with WHERE AND/OR, with Subqueries using IN
	Data model metadata design and data driven joins
key-value	User defined fields in a schema
key_buffer	Processor at 99.9%, memory at 5%. Configuration help?
	Queries slow down daily, optimizing helps -> why?
	Key_Buffer_Size
	large multiple table update taking a very long time, help!
	mysql max_connections
key_buffer_size version	Help make my big new server fast
key_len	Multi-Column indexes
key_reads	Memory settings for server with 4GB RAM
	What happens if the size of an index file exceeds physical RAM?
kill	how to stop it
kv	Opinions on this schema please =)
kv table	“CACHE INDEX” and “LOAD INDEX INTO CACHE”
	Having an argument about table design
language recommendation	MySQL / WebFront End / Best Language to support?
last_inserted_id	How do I combine 3 queries into one
last_insert_id	Looking up a value in a 'subtable' and inserting it if it doesn't exist
	Update query problems
	Transaction deadlock with many threads
	Select and update at the same time (with selected value)?
	Problem of indexing Country, State , City
lat lng	Slow select on table with 1.8 million rows (filtering on lng/lat)
	How to improve query performance in expression related order by?
lat-lng	select query in from clause creates problem
latitude and longitude	Optimised way to search over 2 milllion poi data in mysql
latitude/longitude	query not using index
layer	mysql user access level
	When do I start... partitioning?
lead and lag	Oracle Analytical Functions
leaderboard	RANK() emulator?
leap seconds	PHP and MySQL time not same
lecture	Poor Performance with tables over 1Million entries
left join	Help w/ data modeling, 1 to 1, 1 to none? hack?
	need help with cross referenced tables
	Help with query with conditions
	Help with Join Query
	need help! query to get absentees list
left off	30M rows - is dynamic sorting and selecting even possible?
	How do deletes and updates affect fetching of rows?
	Innodb PK in secondary index
	next/previous on a date select query
left_off	should i go with myisam or innodb?
licensing	MYSQL Community vs entreprise
like	is good have single index an composite index on same field
like suffix	How to fast search in 3 millions record?
limit	MySql 4.1 optimization search poor performance
	Using LIMIT in a SELECT statement which does a JOIN
	index performance on "limit" condition
	Index not working as I expect
limit helps/hurts optimization	MySQL Explain rows limit
limits	Storage capacity
	Max quantity users in MySQL
	Data object standards
	Maximum Constraints Per Table
ln -s	How to Install MYSQL that comes with SLES 10 on a SAN mount point instead
load	Testing the updated database whether it is properly updated or not
load balancer	Master-Master Active-Passive loadbalancing with ultramonkey
load data	Append with LOAD DATA INFILE
	need to upload .txt to SQL table.
	Load Infile - Not able to import microsecond level datetime from CSV
	CSV import with mysqlimport
	loading data problem
	Proper syntax of LOAD DATA INFILE
load data expression	Mass Import Innodb
load data local	load data errror ONLY on remote server
load data paradigms	Importing Data from an XML Document into a MySQL Table
load data set variable	Null values are replaced with zeros in infile.
load data variables	Is it possible to use variables and string functions with LOAD DATA LOCAL INFILE?
localhost	creating connection to "Server Administrator"
locate	Comparing strings
locking	Minimize row locking for update statement
locks	Solving table locking issues
	Help with locks
	Are queries queued?
	lock block deadlocks
log files	Log files filling up
log sequence	Index not used in certain DELETE-queries?
log-slow-slave-statements	Replication server is running behind
login	Mysql and CentOS 5.2
	Need Help - Server was hacked
	MySQL on Ubuntu mess...pls. help
login access	Access
logs	mysqldump for BLOB?, InnoDB log files?
log_warnings	Prevent logging for unsafe statements
long running transaction	Query id on SHOW INNODB STATUS
longblob	MySQL kills itself when cannot allocate X bytes
look for	impact of havig both concurrent_insert=2 and low_priority_updates=1 together?
loop thru	Cursor usage with Prepared Statements
	Select query too slow from merge table of 1 billion records
lots of tables	MySQL 4.1 to 5.1 large scale upgrade
lower	Using DECODE with SELECT and LIKE
lower_case_table_names	Change DB to case-insensitive = problems
lvm	Replication setup (for the first time)
maatkit	How to know if a slave is identical to his master ?
mac install	Problems creating my.cnf / options file
make commalist	while loop - how to remove last comma
many tables	tables per company - why not
many-to-many	Need help on designing simple db
	Problem creating table with 2 primary keys
	Simple many to many query...
many:many	Bulk data question
	1 to many and many to many help
	Learning Management System MySql Database design
	Unary many-to-many relationships
many:many relationship	best practices in relationship
mapping	Basic conception for database
mapping table	Tables optimization for messages feature
	Inverse Lookup in Key-Value Storage: avoid disk seeks
	INSERT IGNORE ... SELECT performance question
master-master	How best to support global website?
max	InnoDB to MyISAM
max-allowed-packet-size	ERROR 1153 (08S01) at line 356771902 in file: 'mysqlmulti-bins.sql': Got a packet bigger than 'max_allowed_packet' bytes
maxclients	To many sleeping connections
max_allowed_packet	Maximum number of records the "SELECT IN" operation can handle!
	MySQL server has gone away
	How long does a query take?
	max_allowed_packet and its impact on backup (and replication)
	Not enough memory to allocate insert buffer of size 1073741824
max_connections	Debugging too many connections
	How to get MySQL concurrent query nos.
	Does a too many connections error always really mean it?
	Question on max_connections
	Both master and slave stop accepting connections
	max_connection
	Can the use of Ephemeral ports be disabled?
max_heap_table_size	Real weird slow down with select count(distinct x) and high max_heap_table_size
max_join_size	"SHOW VARIABLES" and "mysqladmin variables" show different settings
max_open_files	Error 23, 1016: Partition with MyISAM
max_rows	Will increaseing table size affect current data?
	MAX_ROWS
max_updates	ERROR 1226 (42000) at line 1129: User 'root' has exceeded the 'max_updates' resource (current value: 100)
md5	Fastest way to check for an image in a table
	How should I make text column search faster?
	SHA-256 which data type is the best?
meb	MySQL Enterprise Backup Remotely
median	How do I get the median instead of average?
meet in the middle	Multiple Databases - Search and retrieve.
meet me halfway	Ignoring certain characters with SELECT query
	I'm looking for the best way to join two tables based on the matching of the words in a varchar field in one table against a varchar field on another table
memory	InnoDB log group capacity error
	Anybody met this errors :Out of memory (Needed 16777224 bytes) ?
	Slow Updates on Memory table - (detailed)
	Optimising max_heap_table_size & tmp_table_size
	how to estimate the real mysql memory consumption?
mha	Disaster Recovery with master-master replication
	Setting up Circular replication in existing replication infrastructure
middle	Another Complex Query
	regexp challenger
milliseconds	Date/Time Query
	Milli and Micro seconds in mysql
mixed replication	Replicating from innodb server to myisam server
mongodb	Comparison b/w mongodb and mysql
more_results	stored procedure with cursor only returning one row in PHP -- works in MySQL client
move datadir	Not able to move database to mounted LUN in linux
moving average	Moving average
mrr	MySQL 5.6 update doubled IOs
mssql	DataMigration from Sqlserver to MYSQL (Experts help need!)
mssql conversion	convert mssql function to mysql function
mssql functions	Converting Functions from MSSQL to MYSQL
mssql to mysql	Migrate a MS SQL server database to MySQL
mtype	MySQL 5.6.21 signal 11 crashing instantaneously after START SLAVE
multi-master	Multimaster replication set up with a single slave
multiple disks	Chaning database dir to another hard drive
multiple key_buffers	Anyway to identify the special key_buffer_size
multi_query	stored procedure with cursor only returning one row in PHP -- works in MySQL client
mutex	What's the difference between concepts--latch and mutex?
mutexes	MySQL + 2 x Intel Xeon (6 cores) performance problem
	Why does MySQL's performance decrease when queries are executed in parallel?
my.cnf	Slave is not updating some tables .....
my.ini location	Error 10061: connect to MySQL server failed
my.ini my.cnf	How do I find what configuration files were loaded
myd	BLOB storage file
myisam	random reads
	is 16 gb ram enough for handing mysql database of size 100 gb having myisam as storage engine ?
myisam advantages	Transactional vs. NonTranscational For The Layman?
myisam auto_increment	How MySQL MYISAM manage the auto_increment column
myisam indexes	Significance of Primary Keys
myisam pointer size	Table full message when data is just over 16MB
myisam vs innodb	should i go with myisam or innodb?
	Database effeciency
	HELP! making choises on Performance - Storage engine - Caching
	New to InnoDB (want to convert from MyISAM)
myisam-innodb	Error Duplicate entry - Master-Slave replication
myisam_data_pointer_size	myisam_data_pointer_size
myisam_max_sort_file_size	enable keys, force sort, not keycache
myisam_sort_buffer_size	myisam_sort_buffer_size
	Repair Will Not Use Filesort
	"Alter table enable keys" randomly using "Repair with keycache"
mysql history	Why does MySQL's performance decrease when queries are executed in parallel?
mysql server has gone away	Running Large scripts from command line
mysqldump	Aborting Optimize Table for Innodb
	How To bakcup Databse per table ?
	Best Prctice export from MySQL 5.1 to 4.1
	what should i do when backup ?
	Partition-wise mysqldump backup script at MySQL Forge
	MySQL Backups - Innodb
	backup database
	stored procedures and functions
	moving mysql database
mysqldumpslow	Problematic Query identification at the time of load on server
mysql_proxy	MySQL Proxy - Production Worthy?
mysql_real_escape_string	Adding a filename to a MySql database
my_use_result	Memory Allocation error
name	Order by using filesort on where
navicat	Import and export flat files containing backslashes
netstat	Replication: Connecting Slave and Master
network	Switching to backup DB on error
net_buffer_length	max_allowed_packet and its impact on backup (and replication)
new slave	Adding slaves to replication environment
new slave from old	1 Master -> Many slaves, need to update dump file
new thread	1135 Can't create a new thread (errno 11)...
newbie	building tables
nmap	Replication: Connecting Slave and Master
nondeterministic replication	A qq reg SBL with current_timestamp()
nor	indexing on every column?
normalization	Design of tables
	ERD Design HELP!
	Is my database normalized?
	How do I count the number of rows with certain data
	select * where value>1
	Newbie Normalization Question
	Insert keys from 1 table into 2 others.
	Rock/paper/scissors design
normalize	Time series database design
	finding it hard to setup the relationships
	Performing multiple updates and selects
	Standard way to store user information
	Database Normalization: Always the best thing to do?
	JOIN vs Denormalize table vs Vertical partition
not using index	Problem with a query performance
null	after moving database problems with NULL value
	Using null to mean all or any
nulls	NULL but TRUE
numa	Poor performance of MySQL 5.5
numbering rows	SubQuery and result
o'brian	Mysql query produces different results for different users
odbc	Configure Database
	How to open MySql?
offline backup	Offline Backup
omg	UPDATE a field SEVERAL times in 1 UPDATE
on duplicate	Deadlock occuring since setting a unique index.
on duplicate key	How do I combine 3 queries into one
one-to-many	Subtypes can they be related
oo	PHP OO mysqli query problem
open file limit	max_open_files error
optimize	does innodb table need 'optimize table'?
optimize innodb	Optimizer for innodb does not reduce "data_free"
optimize table	Optimize table statement
	Optimize table and fragmentation
	Execute table optimization concurrently
optimizer	Optimize Inner Join With WHERE BETWEEN dates
optimizer_search_depth	Query Performance Problem
	select with join of 25 tables crashes mysql database
or	Extreme high load and low throughput using MySQL & Hybris on an HP DL380G5, quad-core Intel, 4GB RAM
	Help optimize query
	index usage dependent on in(group) content
	Poor performance with an "OR"
or to union	Long execution time despite LIMIT 3
	WHERE OR performance issue
oracle	Bitmap Index
order by	unique ID field, getting next and previous existing ID from table
	Re: MYSQL Sorting IN by orignal order?
	distinct vs. group by
	Query Optimization - order by
order by field	Order by my order. How to ?
	How to keep order of values inside IN() operator
	showing records in order given by in clause
order by list	IN order
order by rand	Slow MySQL Queries
org chart	Building a widget/graph from mysql view
os	Table fragmentation and optimization
os limit	Error: ORDER BY clause
	MySQL fails to start
over-normalized	Big problems on optimizing query
pager	Index not used in certain DELETE-queries?
pagination	MySQL Performance Tuning on my server
	Query performance on database with joins
	Slow search query
	Query performance question (using index slows down?)
	Alternative to FOUND_ROWS()
	Very Slow Simple Query
	break mysql query? Is this possible in my sql
	Query that returns indexed fields involves FILESORT, why?
	join in union
	Efficient MySQL for pagination of large amounts of data on website
	Showing recordsets from tables with one (main table) to many (secondary table) relationship
	Use of memory table vs temporary table question
	Heavy task on mysql by AJAX Pagination?
	Jet Profiler says I'm slow....
pagination - precalc	Handling Large Datasets
pairs	Query To Find the Number of Self-Joins?
paragraph	Retaining paragraphs in text data type
parallel	Performance LONGTEXT / LONGBINARY
	large multiple table update taking a very long time, help!
parallelism	Intra-Query Parallelism in MySQL Server
partition	MAX_ROWS on Partitions
	How to partition my table
	Table partitioning
	How to create partition on existing table?
	Partitioning with range(to_days) issue
	Partition-wise mysqldump backup script at MySQL Forge
	Improving Slow Query
	How to handle secondary keys in partitioning?
	Exceptions with Partition Pruning
	How can I decide which partition type can I chose
	Open tables with Partitioning
	MySQL performance help
	partition by range on decimal type
	count rows in a partition
	How to stop a database growing in size on the disk
	Simple query seems to be ignoring date index
partition add drop	Using MySQL Partitioning Instead of MERGE Tables
partition auto_increment	Partitioning by date, and maintaining uniqueness
partition by day	Problem with granularity choosen
	Add new partition for Range by date
partition by list	Fortnight partitions
partition discard	Backup one of the sections in innodb table
partition mapping table	How to partition that table?
partition null	Partition Pruning
partition priority queue	KEY vs RANGE partitioning
partition suggestions	Move from unpartitioned database to partitioned database
partition use cases	When partition a table
password	Help on MySQL 4.1 & PHP 4.3.11
	creating connection to "Server Administrator"
	any cheat-sheet style documents?
	What do you do with the database user passwords?
pdf	MySQL blob performance
pem	SSL error: Unable to get certificate from '/etc/mysql/newcerts/client-cert.pem'
percent improvement	What hardware factors influence MySQL query execution time
percentile	Why I can't insert more than 100,000 rows in a script?(mysql+php)
	can i quickly do a 95th percentile in mysql
	Calculation of a '95th percentile'
	Counting occurences of data falling betwen a series of limits (buckets)
perf	slow queries and high % of wait I/O
	random reads
	Statement/row questions
	Any way to optimize join to find rows without conditional foreign rows?
	Very slow DELETE, UPDATE, INSERT on a new server
performance	CentOs or Oracle Linux?
performance_schema	MySQL Performance Schema: Overview
	MySQL 5.6 update doubled IOs
permissions	Replication problem
persistent innodb statistics	timestamp, datetime as default value as current_timestamp [PARTITION]
petabyte	How to scale MySQL Cluster to support PB storage
phone numbers	When to use separate tables.
phones	printing fetched values
	Creating a variable variable name
php	Storing Special Characters in Table
php build where	mutiple field query
php escaping	Mysql query produces different results for different users
php file upload	How insert data in table using a .txt file
php flow	Creating report filter by name in one table
php install	Your PHP server doesn't have the MySQL module loaded or you can't use the mysql_(p)connect functions
	Error when trying to configure PHP to work with MySQL
php log_errors	Pasted text not saving
php mysql_fetch_array	PHP access not working right
phpmyadmin	cannot change character set
physical copy	physical export
piping	Store dump from DB on Server A to Server B (File) and test restore on C
pivot	Need help with a Query....cross tab format
	Pivot Table Rows into Columns stored procedure
	insert 0 when combing tables?
	Cross-table in stored procedure
	Pivot tables
plesk ubuntu	Always get "Access denied for user 'root'@'localhost'" after installing
plugin	Plugin 'InnoDB' init function returned error.
	upgrading to innodb plugin
	How to create TableSpace
polish	Unproper order of sorting in utf8. Collation?
portuguese	Using accentuation or other special characters and printing with php.
ppm	perl script hangs on query with where clause
precision	Math function logarithm
prefix	index usage dependent on in(group) content
	Slow Query for Alphabetically Adjacent Terms
prefix index	Very slow sort on Order By for MySQL query.
preload cache	Preloading Index - LOAD INDEX INTO CACHE problem
prepare	prepared statements for multiple queries
prev value	Getting data from previous row
primary key	Primary Index
	Replication lag when no primary key on InnoDB
	Question about indexes
	table with multiple primary key
privileges	Db access/privileges philosophy
procedure	Procedure is not working
progress bar	is automatically monitoring progress impossible?
prune	Noob question - simplist way to store last 4 viewed products?
pt-query-digest	Problematic Query identification at the time of load on server
pt-table-checksum	Comparing large slaves to master
pt-table-sync	Comparing large slaves to master
pta	Tracking past group memberships of multiple groups
pwd security	Designing a forum - general design logic question
qc	Linking to a LUT more than once
qc too big	Randomly slow Insert / Update on small table
qps	Help make my big new server fast
	Database Pool Size
query cache	Queries slow down daily, optimizing helps -> why?
	Why is my entire database getting locked for a slow select query?
	Query cache was never filled up
	Understanding the Query Cache and the Innodb_buffer_pool???
	A fast (>0.01s) query sometimes slow (>2s)
	Query Cache Causing High CPU Load
	Poor performance of MySQL 5.5
query cache no	MySQL 5.5 and Query Cache
queue	row-level lock that prevents SELECT?
queuing	FOR UPDATE and LOCK IN SHARE MODE
quotes	delete query doesnt work with php
	Looking for Rule on quoting
quoting	MySQL Output Help
raid	databases and log files on separate hard drives
	CREATE TABLE ignores DATA DIRECTORY option
	InnoDB and separated disks
	5.1 to 5.5 upgrade causes significant write slowdown (MyISAM + indexes)
raid controller	Inserts very slow
ram	MySQL eats all of RAM memory
	is 16 gb ram enough for handing mysql database of size 100 gb having myisam as storage engine ?
rand	evaluating table locking
	small DB, big problems
	select limit records from 600000 records
	rand() to randomize rows only once daily
random	Horrible performance on BLOB's when using WHERE or ORDER BY
	random sorting - what is the quickest method?
random dives	Analyze question
random fetch	Very Large Non-Dynamic Table for Lookups
random id	best way to generate a random unique id
random index	Fact Table Partition Design
range	Select * from MyISAM table returns PK order / filesort order
	Simple Query -- Needs to be Mind Numbingly Fast!
ranges	I want to write a user-defined Aggregate Function
	What Method is Best
rank	RANK() emulator?
	your ranked out #x of X accounts?
	Get row of a specific result
rank order	sp vs query window
rbr	Row based Replication: Deadlock is not rolled back
rdf	About performance for Database of millions of records
	linked data
read committed	MySQL Backups - Innodb
read-write separation	Forwarding writes to master
recovery	Restore InnoDB schema from partial backup
redo logs	Power failure and innodb
redo transaction	fix "Deadlock found when trying to get lock; try restarting transaction"
ref range	Query using "ref" instead of "range" access
regexp	REGEXP() Question
	RegExp Question
	how to find particular string from text column
	mysql regexp issue range
	Pass Numeric Values From Form To Set Data Lenght +...
regression	Mysql 5.1 to 5.5.1.18 Upgrade Poor Performance
relay	how to setup master, primary slave master and slaves
relay log	PURGE BIN LOGS FILES NOT WORKS
remote	connecting to Mysql server running on a different machine
rename	Bulk updates on live database
	insert or load ? best practices and performance
rename table	Importing a database dump created with --single-transaction does not result in single-transaction import of the file
	why my db don't use index?
reorganize partition	help making event for auto delete of partitions
repeatable read	Uncommitted rows are updated by a second transaction
repeatable-read	MySQL server configuration for a 8 cpu+20gb RAM server
repl	mysql replication issue (Handling write load on slaves)?
replace	Character encodings issues with php, mysql, apache
replication	master-slave replication good solution?
	Upgrade from 5.0 to 5.1
	Replication multiple database
	Can't restart slave - Could not initialize master info structure
	Replication problem
	Need advice to Setup replication server (INNODB)
	replication or mirroring?
	update slave after failover
	Error Duplicate entry - Master-Slave replication
replication bug	MySQL 5.6.21 signal 11 crashing instantaneously after START SLAVE
replication checklist	setup mysql replication on CentOS error
replication designs	conflict resolution
replication lag	Slave is lagging from master
	Master - slave connection
replication sequence of events	is it possible replicate with mysql5..5
reset root password	Setting up root password
	unable to create database even as root user
resignal	Stored procedure, stored function and signals
resize	Different ibdata files for every database
resize iblog	Caonot change innodb_data_file_path
result caching	Memory Allocation error
resultset	Question: Technical Background Of The Result_Set
reverse	How to fast search in 3 millions record?
reverse lookup	Slow Connection
revoke	Make Table or Catalog Read Only
	Revoke privileges from user issue!
revoke proxy	Create new user by using MySQL CREATE USER statement
rollback	Transaction won't end
rolling window average	No Window Fns in MySQL?
root	Resetting the Root Password on Windows
	Need Help - Server was hacked
	Debugging too many connections
	creating connection to "Server Administrator"
	any cheat-sheet style documents?
	MySQL users question
	Why doesn't root get full privileges?
rot	Help optimizing query/index
roundtrips	Alternate for Varrays in Oracle
row size	exact row size of InnoDB table
	blob to mediumblob or largeblob
rowid	internal rowId
safe-updates	"SHOW VARIABLES" and "mysqladmin variables" show different settings
san	What is the story of NAS and SAN file systems for Database?
	How to Install MYSQL that comes with SLES 10 on a SAN mount point instead
scaling	Skyblog, Friendster, twitter, yahoo mail..... how to design database for huge no. of users and rows
	design distributed database
	word index - is there a better solution?
scaling via slaves	Three Node Replication (US West, US East and Europe)
schema	select query not using indexes
	Where to find a tool for differences between two database structures
	Up to 1 million rows Performance + Design Help
	I have queries that sporadically take a very long time
scrubbing	Tools for Scrubbing Entire Mysql Database
search	Searching with accented words
search form	Problem with search when add BETWEEN to query
searching	SQL instructions enclosed in "/*! ... */"
seconds_behind_master	"Seconds behind master"-Value jumping
secrets	Long query locking up MySQL Server
security	Replciation Security
	Actual Newbie Question with mysql connect
	Changing Plain Text Passwords to Hashed Passwords
	Database Encryption
	Connecting as a User
	Building Memory Table from AES Encrypted Physical Table
	What do you do with the database user passwords?
select	Rewrite Full Outer Join into Subquery
select *	optimised way
self join trick	grouping query results in their order
selinux	Moved datadir and now get: ERROR! The server quit without updating PID file
	startup mysql as service on redhat enterprise linux 6.4
semanage	startup mysql as service on redhat enterprise linux 6.4
sequence	A sequence solution for those that want it
	Unique columns over two tables
	Record Position in Ordered Selection
	Last/highest ID?
	Simulating sequences
server_id	How server id is communicated?
session	Max_used_connections
set	search comma separated db column
	PREG_Match?
set names	Re: Korean characters displaying as ???
	load data character set question
	import utf8 to latin
	Data is being in non readable format.
	Problem with Accented characters while migrating SQL server to MySql server
set names utf8	Problems with Spanish characters
	Encoding problem
sets	Help with query...
setup slave	New to MySQL Replication
sharding	performance: sharding and replication ideal?
	How to scale MySQL Cluster to support PB storage
	Database Sharding at Netlog, with MySQL and PHP
	Skyblog, Friendster, twitter, yahoo mail..... how to design database for huge no. of users and rows
	Are there any pitfalls with having multiple MySQL databases on 1 server node?
	When do I start... partitioning?
	sharding steps
	How to enable index fast in MyISAM table
shared memory mode	How to connect with Workbench to server in shared-memory mode ?
sharp s	Problem inserting german and french characters
	utf8_general_ci (MySQL 5.0.x vs. 5.1.36)
show master status	how to setup master, primary slave master and slaves
show slave status	slave stuck
sig alrm	SIGALRM blocked by MySQL
signal example	Date check on insert.
simple index	Query Tuning techniques
skip grant tables	unable to create database even as root user
skip-name-resolve	[SOLVED] Can't connect to remote server
	skip-name-resolve and access issues
slam	Help collating multiple rows from multiple tables into a single row
slave	PURGE BIN LOGS FILES NOT WORKS
slave initialization	Quick replication questions
slave invalid position	Exec_Master_Log_Pos doesn't move (invalid position?)
slaves	Slave to master replication
slave_open_temp_tables	Replication, Stored Procedures & Temporary Tables
sleep	To many sleeping connections
sliding segment	Adding Segments in Table
slow	select query not using indexes
	my system usage hits 100% at every 6 hours.
	Slow search query
	use index on a view
	350+ million rows -- is this as fast as it can get? (too slow at the moment!)
	Slow Mysql optimizer
slower	I have queries that sporadically take a very long time
slowlog	MySQL using 80-90% of CPU
	CPU usage spikes to 100% every week or so
	Query Tuning techniques
	MySQL performance on a HP DL385G7
snapshot	MySQL & SAN
	MySQL Replication
	Replicating a big db
	Mysql SAN Related Scenarios
	Faster dump using mysqldump
snodgrass	Time series database design
social search	Theoretical Database Table Structure
socket	MySQL Socket Error
	ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)
sort-union	Queries using WHERE IN and ORDER BY LIMIT
sort_buffer_size	Optimizing MySQL filesort with small limit.
sp	create function help
sp backup	How to backup Stored Procedures
sp prepare limit	ERROR 1064 , in stored procedure
space	Aborting Optimize Table for Innodb
speed up inserts	No Limits - Memory Engine
speedup	I need Optimizaton of a Query - DISTINCT
sql injection	Two usefull functions(XSS/SQL injection).
	Multi user issue
	SQL Injection
	$_POST Help :
	Text box security
	Multiple databases
	Assistance with securing input
	Numbers Vs. Characters in MySQL Database
sqlexception	Transaction won't end
sqlite	Convert MySQL to SQLite
sqlserver	Switching from Sql Server
sql_calc_found_rows	full table scan for limit??
	Query that returns indexed fields involves FILESORT, why?
	resultset rows performance
sql_mode	Load data infile not working
sql_slave_skip_counter	Replication Errors on Slave DB
ssl	SSL error: Unable to get certificate from '/etc/mysql/newcerts/client-cert.pem'
	Failed to Setup SSL warning
	SSL connection works but SSL Replication does not
ssn	field types syntax
start end	How MySQL Uses Indexes
start_time	Index on datetime type
start_time end_time	Query not using index
stateless html	When to open/close the MySQLConnector
stateless http	How many users on one connection?
stddev	What is the SQL equvalance to VARIANCE
stopwords	FULLTEXT search failing
stored procedure	MySQL Stored procedure Tutorial
	stored procedure with cursor only returning one row in PHP -- works in MySQL client
strict	Testing the updated database whether it is properly updated or not
	Upgraded MySQL - Lot's of Similar Errors
string as number	Problem with MySQL SELECT
stripe	Can a Mysql MyISAM or InnoDB table benefit from the STRIPE feature of disk device?
	Can a Mysql MyISAM or a InnoDB table benefit from a set of multi-thread and multi-disk I/O device?
str_to_date	Need to Convert Date Time at Query runtime
	Datetime conversion fails
stumbling	Why INSERT performance has not increase in sub-table?
subqueries	Why are no indexes used in this case?
subquery	Please help with slow easy query
	Get statistics using self joins
	Performance of WHERE EXISTS query
	100% cpu usage on single cpu core
	nested select
	tables, joins or not, to script or not
	Partition on day of year
	slow query in Inndb
	Rewrite Full Outer Join into Subquery
subquery - 5.6 optimization	Dead query
subquery can help	Optimizing it even more
	Simple JOIN is extremely slow.
	Strategy needed for picking random rows
subquery to join	How kan I optimize this Code?
sum data_length	MySQL 5.5.31 cripplingly slow
summary	Design approach for summary table by 3 items
	compressing tables
	Counters
	Database Design for huge set of data
	InnoDB CPU Spikes
	Very long query doubt... (Monster query...)
	Slow JOIN to convert IP to Country Code
	Best way to store/access large amounts of data?
	should i go with myisam or innodb?
	Large table designissue
	Partitioning with range(to_days) issue
	Multiple complex queries
	UNIX_TIMESTAMP Duplicate key
	views, unions and different dbs
	Slow 'sending data' phase on mySQL query, for simple query
	Thinking about sorting articles..
	Index performance
	Storing a large, dense tensor (35gb scientific data) -- is mysql appropriate?
	Large Table Architecture
summary table	Bitmap Index
	To store or calculate on the spot?
summary tables	Solving table locking issues
	Which storage engine?
	Killed by joins. 1 minute selects in Access, 15 minutes in mySQL
	GROUP causing Using Temporary Using Filesort
	Partitioning or Not Partitioning?
super freaking	select with join of 25 tables crashes mysql database
surrogate key	Primary key for referee table.
swap	Regarding use of swap memory for MySQL.
	Basic Standards of Mysql server variable setting
	Strange disk usage in mysql datadir (partition)
swap tables	MySql table disappears at random after multiple TRUNCATE queries
swapping	Very Slow Simple Query
symbol	Simple query seems to be ignoring date index
symlink	Different data directories for different databases?
sync_binlog	Got fatal error 1236 from master when reading data from binary log
	Got Fatal Error 1236 From Master Reading Data from binary log possibility to loose data/?
	crash recovery of sync_binlog=1 and innodb_flush_log_at_trx_commit=2
table design	DB Design - Users Table
table lock	SELECT queries Locking Problems
table name case	Case Sensitivity for View Names
table name casefolding	mysql and xampp
table of ints	select dates in a month that fall on a given day of the week
table scan	Select * from MyISAM table returns PK order / filesort order
	field equal to OR between 2 fields?
	full table scan for limit??
	Optimising a GROUP BY and ORDER BY in a joined query
	Question on bad execution plan
tablespace	How to create TableSpace
tablespaces	Importing Data with Single .ibd file
table_cache	Optimizing table_cache - Open files?
table_open_cache	Open tables with Partitioning
teaching	Teaching mysql to teens
tee	importing Text to MySQL
temp table	Outfile Using too much disk space
temporal	MySQL 5.6.21 signal 11 crashing instantaneously after START SLAVE
temporary table	Storage engine used by temporary tables
text	InnoDB log group capacity error
	TINY TEXT vs Varchar(240) and TEXT vs Varchar(300-500)
	large multiple table update taking a very long time, help!
thread stack overrun	Writing my first Stored Procedure
	What is wrong with my Stored Procedure?
timestamp	Different timestamps for time of creation and time of update
	how to convert timestamp value to string in MySql
	Date - unix_timestamp
timestamp default	Timestamp fields
timestamp microseconds	convert seconds to minuts
timestamp vs datetime	DATETIME vs. INT(11)?
	#1452 - Cannot add or update a child row: a foreign key constraint fails?
timestamp(14)	Error: Too big precision 14 specified for 'time'. Maximum is 6.
timezone	How to time sync MySQL with system time
	DST and UTC_TIMESTAMP
	timestamp column behavior
	Curdate() returning one day old date
	ERROR 1146 (42S02) at line 12: Table 'mysql.time_zone_name' doesn't exist
	Mysql ADDTIME can it do this ? Daylight savings time issue
	converting timezone for data in specific table
	TIMESTAMPADD and Daylight Savings Time issue???
	Probable timezone problems: can anyone confirm and offer a solution?
timezone tables	convert_tz giving null even after updating time zone files
time_zone_id	CONVERT_TZ time_zone_id reliable?
tiny	Oracle CLOB in MySQL?
tmp	how to solve this complex query
	question about create a table
	/tmp folder getting filled with #sqlXXX.MYI and #sqlXXX.MYD files
tmp tables	Optimising max_heap_table_size & tmp_table_size
tmpdir	ERROR 126 (HY000): Incorrect key file for table
tmp_table_size	Changing tmpdir causes InnoDB to break
top n	Top n Scores
	Selecting max for each day
topn	[SQL] Left join order
	Select N per Value
touch	Poor Performance with tables over 1Million entries
transaction	Transaction/Locking Question
transaction rollback	mysql innodb transaction concurrency
transactional	what is transactiona and non transactional table in mysql?
transcoded column	specific collation issue
transcription	Checking for exact match in row
transpose	Query Slowness
tree	Multi Level Sorting - Queries Question
	Modifed Preorder Tree Transversal Child Roll Up (including grandchildren)
	Building a widget/graph from mysql view
tree walk	How to transform NESTED SETS to XML?
trigger	Trigger Replication is not same as in the documentation
	Delete record with backup
trigger example	Mysql
	Date check on insert.
trigger limitations	Triggers & sProcs
triple master	Multi master problem
trx	limitation on request per second
tuning	MySQL Performance Tuning on my server
	High CPU use (spikes) and Page Faults in VM
	MySQL Performance Tuning Help
	Optimal Mysql Configuration (my.cnf)
tutorials	Self-Help
tv listing	What Method is Best
typos	Strange results when doing a Fuzzy comparison of two email addresses with the match/against function
union	Paging on Union queries
	N-to-N Model: Table Size vs Complexity
	Opinions on this schema please =)
	Slow query - help me optimize ?
	INNO DB performance problems with temporary tables
	join in union
	Poor performance with an "OR"
	Rewrite Full Outer Join into Subquery
unique	Question related to unique key
update	Performing multiple updates and selects
update subselect	calculating total products in each category
upgrade	Upgrade from 5.0 to 5.1
	Can replicating between versions cause crashed tables?
	Moving Mysql to a new server
	replication from 4.1 to 5.5 and character set change
upgrade dual master	Master Master Replication Upgrade from 5.0 to 5.5
upgrade via dump	botched data post-upgrade
user	MySQL users question
	Why doesn't root get full privileges?
	Revoke privileges from user issue!
using index	InnoDB CPU Spikes
	Use of DISTINCT in INNER JOIN
using index for group-by	Index optimized left join with group by
utf8	utf8 inputs store as html entities, how to retrievesubstr of utf8 inputs?
	Mixed encoded DB Latin1 & UTF8
	Re: Korean characters displaying as ???
	Storing UTF-8 strings in MySQL Database
	Character encodings issues with php, mysql, apache
	load data character set question
	Problem with Batch Import
	what is the step to convert a db from latin1 to UTF8
	UTF-8 problem
	Require suggestion for changing character set in Master master replication setup
	Storing Hebrew strings Ok, but gibberish when pulling data on another server
	Migrating from latin1 to utf-8
	problems with charset
	replication from 4.1 to 5.5 and character set change
	Windows: problem with unicode after update
utf8 bom	Proper display of special latin1 characters in Powershell / MySql client ?
utf8mb4	Arabic text in mysql Varchar row
	Charset and Collation Question
uuid	UUID as a primary key
	utf-8 uuid varbinary
varchar	InnoDB log group capacity error
	Join Statement with math operation
varchar index	mysql search performance
varchar vs tinytext	VARCHAR vs. TEXT - some performance numbers
varchar(255)	Outfile Using too much disk space
variance	What is the SQL equvalance to VARIANCE
vb6 text	How to store long string from VB6 to MySQL database
version diffs	Simple performance question - differs on 2 computers
version incompatibility	Need advice to Setup replication server (INNODB)
vertical partition	JOIN vs Denormalize table vs Vertical partition
	JOIN, LIMIT, ORDER performance problems
	Error while creating the table in InnoDB
	Cascading deletes
vertical partitioning	RAM requirements- new server
	Partition by threadid or postid?
view	use index on a view
view charset	Database migration failing.
views	View insertion failing
	Can we expect an enhancement for derived table merge optimization?
vista	perl script hangs on query with where clause
wait_timeout	how much time can i set in wait_timeout in mysql(wait_timeout variable)
	Performance Issues - errno 12 on MySQL5.0.45/Windows Server 2003
	MySQL 5.1.36 on FreeBSD 7.2 amd64/i386 not honoring wait_timeout
	MySQL Timeout
	Does a too many connections error always really mean it?
	Close conections
	Can the use of Ephemeral ports be disabled?
web	Mysql RAM
where	Problem with search when add BETWEEN to query
wheres	write trim into INSERT and SELECT Queries
	Not working in MYSQL5.1
wide rows	Innodb with HUGE row of varchar(500)s
width	Display Width Clarification (numeric data types)
windows data dir	Where in the harddisk?
	Where are the databases?
word boundary	help in select ... where ...like...
wordpress	get info about a mysql call
world db	online sample database to test MySqL queries against?
wrap around table	combine this 2 simple querys into 1 query for performance.
	combine this 2 simple querys into 1 query for performance.
wrong index	simple uses of order by datetime keep causing 'using filesort'
x	8 CPU Cores.....only 1 or 2 being used at the same time...
xss	Two usefull functions(XSS/SQL injection).
	Text box security
	Assistance with securing input
yashinori matsunobu	Disaster Recovery with master-master replication
zerofill	Display Width Clarification (numeric data types)
	search for query that result one random url from domain

转载于:https://www.cnblogs.com/DataArt/p/10092620.html