mysql show 命令汇总
1、查看二进制日志信息
show master logs
show binary logs
2、查看二进制日志中的事件
show binlog events in 'binlog.00001' from pos limit [offset] row_count;
3、show 字符集
show character set like 'patten' | where expr;
4、查询表中的列
show collumns from table_name;
5、查看见库语句
show create database db_name;
6、查看建表语句
show create table table_name;
7、查看创建事件的语句
show create event envent_name;
8、查看创建函数语句
show create funcation func_name;
9、创建触发器的语句
show create tigger trig_name;
10、查看创建用户的语句
show create user user_name;
11、查看创建视图的语句
show create view view_name;
12、查看存储引擎状态或互斥参数
show engine envent_name [ status | mutex ];
show engine innodb status
show engine inndob mutex
13、查看sql语句的错误信息
show errors
show count(*) errors
14、查看当前用户、当前库
show current_user, schema();
15、查看事件
show events 【 {from | in } schema_name 】 [ like 'patten' | where expr ]
16、查看用户的权限
show grants for user_or_role
show grants for 'admin@'10.0.0.0';
show grants for 'app'@'localhost';
查看当前用户的权限
show grants；
show grants for current_user();
show grants for current_user;
17、查看表中的索引
show index from table_name;
show index in table_name;
18、主从复制中的master 服务器的状态
show master status；
19、查看从服务器的状态
show slave status；
20、查看已经打开的非临时表
show open tables from db_name；
show open tables in db_name;
21、查看mysql服务的插件信息
show plugins
22、查看mysql支持那些权限
show privileges；
23、查看当前的所有的进程信息
show full processlist；
full 关键字显示所有info列的信息。
不带关键字full 时只显示前100字符。
24、查看SQL语句资源使用情况
show profile [type [, type ] ]
[ for query n ]
[ limit row_count [ OFFSET offset]]
type: {
all
block io
context switches
cpu
ipc
memory
page faults
source
swaps
}
实例：
select @@profiling;
set profiling = 1；
drop table if exists t1;
create table t1;
show profiles;
show profile for query 1;
show profile cpu,memory for query 2;
25、查看中继日志中的事件
show relaylog events [in 'log_name' ] [from pos ] [limit [offset, row_count ] [channel_option]
channel_option:
for channel channel
show relaylog in 'relaylog.00009' from '12344335' for channel channel_name;
26、查看一个主从复制集群中包括几个从服务器；
show slave hosts；
8.0.22 之后
show replicas；
show relica status\G
27、 查看全局、session 变量和参数
show global | session variables like '';
28、查看某个库中表的信息
show table status in | from db_name;
29、查看全局或局部变量
show global | session variables like ''
30、 查看告警信息
show warnings；
show count(*) warnings；
select @@warning_count;
31、刷新日志（日志轮转）
flush [ no_write_to_binlog | local ] {
flush_option [, flush_option] ....
| table_option
}
flush_option: {
binary logs
engine logs
error logs
general logs
hosts
logs
privilges
optimizer_costs
relay logs for channel channel_name
slow logs
status
user_resources
}
table_option: {
tables
tables tbl_name [, tbl_name] ....
tables with read lock
tables tbl_name [, tbl_name ] .... with read lock;
32、杀死某个链接线程或请求
kill pid；
33、reset reset_option : {
master | replica | slave }