mysql 常用语句整理

SET @oldlink1 = ‘http://192.168.100.66‘;
SET @newlink1 = ‘www.baidu.com‘;

UPDATE Test1
SET Content = (
	REPLACE (
		Content ,@oldlink1 ,@newlink1
	)
)
WHERE
	Content LIKE concat(‘%‘ ,@oldlink1, ‘%‘);

SET @UnitId = ‘27542‘;

DELETE t1
FROM
	Test1 AS t1
INNER JOIN Test2 AS t2 ON t1.Code = t2.Code
WHERE
	t2.UnitId NOT IN (@UnitId);

INSERT INTO Test (
	ID,
	PostTime
) SELECT
	UUID() AS ID,
	t1.PostTime
FROM
	Test1 AS t1
INNER JOIN Test2 AS t2 ON t1.Code = t2.Code;

UPDATE Test1 AS t1
INNER JOIN Test2 AS t2 ON t1.Code = t2.Code
SET t1.NextFlowNodeId = 72
WHERE
	t1.ProcessStepId = 70;

select table_name from information_schema.tables where table_schema=@dbName

select COLUMN_NAME from information_schema.COLUMNS where table_name = @tableName and table_schema = @dbName;

SET @SearchText= CONCAT（‘%‘，‘测试‘,‘%‘）；
SELECT * FROM  Test3 WHERE CONCAT(ItemName,ItemNumber,DeptName,RealName) LIKE @SearchText；