1)OR REPLACE:表示替换已有视图 2)ALGORITHM:表示视图选择算法,默认算法是UNDEFINED(未定义的):MySQL自动选择要使用的算法 ;merge合并;temptable临时表 3)select_statement:表示select语句 4)[WITH [CASCADED | LOCAL] CHECK OPTION]:表示视图在更新时保证在视图的权限范围之内 cascade是默认值,表示更新视图的时候,要...
As others have said, you need to either perform an aggregation so one row can have multiple role values, or you can get the result and filter externally mtm_credits mpeople p=m.person_id='Director''Actor')HAVINGCOUNT(r.role) The problem with your query is that you are searching for a ...
1 MySQL Stored Procedure if statement 0 Calling a stored procedure within an IF statement MySQL 0 How do to do an if statement in a stored procedure 6 MySQL stored procedure with if statement 0 Using if statements in a stored procedure in MySQL 2 mysql procedure with if condition ...
ALTER TABLE t TRUNCATE PARTITION () Section 13.2.2, “DELETE Statement” ALTER TABLE t3 DROP PARTITION p2 Section 5.4.6, “The DDL Log” ALTER TABLE table_name ENGINE=InnoDB; Section 14.1.4, “Testing and Benchmarking with InnoDB”
IF STATEMENT Posted by:ryan liles Date: December 11, 2006 02:26PM I am trying to create a statement that checks a table to see if an entry exists and if it does run one select statement and if the the check comes back with 0 then run another select statement...
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数据备份不仅仅是开发、运维需要了解、熟练和掌握,一些架构设计或系统设计也需要熟练掌握,以备不时之需。最多的应用应该是编制文档上面的技术方案或者安全方案中涉及。 逻辑备份参数选项 从上一篇文章中,可以得到逻辑备份的格式如下: mysqldump [options] db_name[tbl_name...] ...
"Multi-statement transaction required more than 'max_binlog_cache_size' bytes of storage. Increase this mysqld variable and try again", #define ER_SLAVE_MUST_STOP 1198 "This operation cannot be performed with a running slave, run STOP SLAVE first", ...
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> 如果工作接口可以进入了,就可以在Windows平台下,使用Navicat来连接数据库,填写对应的host,Port,用户名,密码就可以 3.2、读写分离测试 这里测试读写分离需要使用到Jmeter了,它是Java写第一套开源的压力测试工具,因为...
TheWHEREclause can be combined withAND,OR, andNOToperators. TheANDandORoperators are used to filter records based on more than one condition: TheANDoperator displays a record if all the conditions separated byANDare TRUE. TheORoperator displays a record if any of the conditions separated byORis...