第一篇关于mysql的文章,留个纪念
1,使用mysqldump时报错(1064),这个是因为mysqldump版本太低与当前数据库版本不一致导致的。
mysqldump: Couldn't execute 'SET OPTION SQL_QUOTE_SHOW_CREATE=1': You have an error in your SQL syntax; check the manual that
corresponds to your MySQL server version for the right syntax to use near 'OPTION SQL_QUOTE_SHOW_CREATE=1' at line 1 (1064)
[[email protected] 18:12:30 ~/xionglang]
$mysqldump --version
mysqldump Ver 10.13 Distrib 5.1.61, for redhat-linux-gnu (x86_64)
$mysql -uroot --socket=/wls/mysql/run/mysql.sock --port=3322
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 47281134
Server version: 5.6.14-enterprise-commercial-advanced-log MySQL Enterprise Server - Advanced Edition (Commercial)
这样的话必须知道mysqldump的绝对路径,在mysql的安装目录下有。
2,导出时指定字符集,报错Character set 'utf-8' is not a compiled character set and is not specifie .
--default-character-set=utf-8
这个是因为字符集错了。是--default-character-set=utf8
3,导出时提示warning,A partial dump from a server that has GTIDs
$/wls/mysql/bin/mysqldump -uroot --socket=/wls/mysql/run/mysql.sock --default-character-set=utf8 --port=3309 hm_stg ofmucroom>exptab1_hm_stg_3309.sql
Warning: A partial dump from a server that has GTIDs will by default include the GTIDs of all transactions, even those that
changed suppressed parts of the database. If you don't want to restore GTIDs, pass --set-gtid-purged=OFF. To make a complete
dump, pass --all-databases --triggers --routines --events.
关于GTID是5.6以后,加入了全局事务 ID (GTID) 来强化数据库的主备一致性,故障恢复,以及容错能力。
官方给的:A global transaction identifier (GTID) is a unique identifier created and associated with each transaction committed on the server of origin (master).
所以可能是因为在一个数据库里面唯一,但是当导入其他的库就有可能重复。所有会有一个提醒。
可以通过添加--set-gtid-purged=off 或者–gtid-mode=OFF这两个参数设置。
个人认为是在导入库中重新生产GTID,而不用原来的。
4,导出的命令
/wls/mysql/bin/mysqldump -uroot --socket=/wls/mysql/run/mysql.sock --port=3309 --set-gtid-purged=OFF hm_stg ofmucroom ofmucmember ofmucaffiliation>exptab1_hm_stg_3309.sql
hm_stg为导出的database,如果前面加-d表示只导出database或者table的结构
5,导入
进入相应的database
source exptab1_hm_stg_3309.sql