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Mysql 触发器 同时更新多张表
虽然不明白你的问些什么，但里面有几个语法错误我帮你改一下
CREATE
TRIGGER
t_AfterUpdate_on_mst_officecurrency2
AFTER
UPDATE
ON
`mst_officecurrency`
FOR
EACH
ROW
begin
update
`mst_generalsetup`
set
`CurrencyName`=NEW.OfficeCurrencyName
where
`CurrencyName`=OLD.OfficeCurrencyName;
update
`mst_office`
set
`Currency`=NEW.OfficeCurrencyName
where
`Currency`=OLD.OfficeCurrencyName;
end;
怎样让mysql 同时更新两个数据库中的表
UPDATE Person SET Address = 'Zhongshan 23', City = 'Nanjing'
WHERE LastName = 'Wilson'
mysql批量更新多表数据
mysql批量更新多表数据
update 库2.tb,库1.tb set 库2.tb.body=库1.tb.body where 库2.tb.id= 库1.tb.id
求MYSQL如何`批量`更新`多表`多字段`？
思路：找到table2的所有字段，然后在table1中更新这些字段。
1：如果你要求在table1中插入table2的数据
SET @pstSql =CONCAT('INSERT INTO table1 (',
(SELECT GROUP_CONCAT(column_name) FROM information_schema.columns WHERE table_name='table2' AND table_schema='你的表所在的数据库名称'),
') SELECT ',(SELECT GROUP_CONCAT(column_name) FROM information_schema.columns WHERE table_name='table2' AND table_schema='你的表所在的数据库名称'),' From table2');
PREPARE stmt FROM @pstSql;
EXECUTE stmt;
2：如果你要求将table2的数据按照ID更新到table1中
SET @pstSql =CONCAT('update table1 a,table2 b set ',
(SELECT GROUP_CONCAT('a.',column_name,'=b.',column_name)
FROM information_schema.columns WHERE table_name='table2' AND column_name !='id' AND table_schema='你的表所在的数据库名称'),
' where a.id=b.id');
PREPARE stmt FROM @pstSql;
EXECUTE stmt;
