sql排序 去除默认升降序排序case方法////遍历数据库所有表及统计表数据总数

时间：2023-03-08 21:10:05

case排序法：

select * from userinfo where id='' or id ='' or id='' order by case id when 10 then 1 when 5 then 2 when 8 then 3 end

还有EXEC法 可以网上查

SQLServer遍历数据库所有表及统计表数据总数：

 DECLARE @TableName varchar();

 CREATE TABLE #GetRecordingTempTable([id] [INT] IDENTITY(,) NOT NULL, [TableName] varchar() NOT NULL, [RecordingCount] INT);

 DECLARE Table_Cursor CURSOR FOR SELECT [name] FROM sysobjects WHERE xtype='U';

 OPEN Table_Cursor;

 FETCH NEXT FROM Table_Cursor INTO @TableName;

 WHILE(@@FETCH_STATUS=)

 BEGIN

 EXEC('INSERT INTO #GetRecordingTempTable ([TableName],[RecordingCount]) SELECT '''+@TableName+''', COUNT(0) FROM ['+@TableName+'];');

 FETCH NEXT FROM   Table_Cursor INTO @TableName;

 END

 CLOSE Table_Cursor;

 DEALLOCATE Table_Cursor;

 SELECT [TableName] AS [表名称],[RecordingCount] AS [总记录数] FROM #GetRecordingTempTable ORDER BY [RecordingCount] DESC;

 DROP TABLE #GetRecordingTempTable;

 GO