用游标实现查询当前服务器所有数据库所有表的SQL

declare @name varchar(100)
DECLARE My_Cursor CURSOR --定义游标
FOR (SELECT Name FROM Master..SysDatabases
where name NOT IN (\'master\',\'model\',\'msdb\',\'tempdb\') ) --查出需要的集合放到游标中
OPEN My_Cursor; --打开游标
FETCH NEXT FROM My_Cursor INTO @name   
WHILE @@FETCH_STATUS = 0
BEGIN

if exists(select 1 from  sysobjects where xtype=\'u\' and name like \'%qq%\')
select name from sysobjects where xtype=\'u\' and name like \'%qq%\'
FETCH NEXT FROM My_Cursor INTO @name 
END

CLOSE MY_CURSOR
DEALLOCATE My_Cursor

　　其中QQ可以替换成自己想要的条件哦

 

PS:有问题改了下还是不行，有知道的人吗？

declare @name varchar(100)
declare @sql varchar(100)
DECLARE My_Cursor CURSOR --定义游标
FOR (SELECT Name FROM Master..SysDatabases
where name NOT IN (\'master\',\'model\',\'msdb\',\'tempdb\',\'ReportServer\',\'ReportServerTempDB\') ) --查出需要的集合放到游标中
OPEN My_Cursor; --打开游标
FETCH NEXT FROM My_Cursor INTO @name   
WHILE @@FETCH_STATUS = 0
BEGIN

select @sql=\'use \'+@name
EXEC sp_sqlexec @Sql
--select @name from Master..SysDatabases
--if exists(select 1 from  sysobjects where xtype=\'u\' )--
select * from sysobjects where xtype=\'u\'-- and name like \'%sys%\'
FETCH NEXT FROM My_Cursor INTO @name 
END


CLOSE MY_CURSOR
DEALLOCATE My_Cursor

　　

DECLARE @dbname VARCHAR(50);
DECLARE @i INT =1; 
DECLARE @maxid INT=0;
CREATE TABLE #temp(
	id int Identity(1,1),
	dbname varchar(50)
)
DECLARE @sql VARCHAR(max)=\'\';
INSERT INTO #temp
        (dbname )
SELECT NAME  FROM master.sys.SysDatabases where name NOT IN (\'master\',\'model\',\'msdb\',\'tempdb\')
SELECT @maxid=MAX(id) FROM #temp
WHILE @i<@maxid
BEGIN
	DECLARE @db VARCHAR(50)=\'\';
	SELECT @db=dbname FROM #temp WHERE id=@i
	PRINT @db
	IF @i<>1 AND  @i<>@maxid
	BEGIN
		SET @sql+=\' UNION ALL\'
	END
	SET @sql+=\' SELECT * FROM \'+@db+\'.INFORMATION_SCHEMA.TABLES \' 
	SET  @i+=1;
END
DROP TABLE #temp
EXEC(@sql)

　　经过千辛万苦，找到了方法，正确的方法如下：

sp_MSForEachDB @command1=\'USE ?;
 
SELECT o.name AS tablename,c.name AS columnname,t.name AS datatype, *
  FROM sys.[columns] AS c
INNER JOIN sys.objects AS o ON c.[object_id]=c.[object_id]
INNER JOIN sys.types AS t ON t.user_type_id=c.user_type_id
WHERE o.[type]=\'\'U\'\'\'