SQL SERVER中查询无主键的SQL

--生成表

IF EXISTS ( SELECT name
FROM sysobjects
WHERE xtype = 'u' )
BEGIN
DROP TABLE TableRowCount
END
go
CREATE TABLE TableRowCount
(
ID INT IDENTITY(1, 1) ,
TableName VARCHAR(500) ,
ColumnsCount INT DEFAULT ( 0 )
)
DECLARE @TableName VARCHAR(50) ,
@sql VARCHAR(MAX)= ''

DECLARE My_Cursor CURSOR
FOR
( SELECT name
FROM sysobjects
WHERE xtype = 'u'
)
OPEN My_Cursor;
FETCH NEXT FROM My_Cursor INTO @TableName;
WHILE @@FETCH_STATUS = 0
BEGIN
SET @sql = 'INSERT INTO TableRowCount ( TableName, ColumnsCount ) SELECT '''
+ @TableName
+ ''' AS TableName ,COUNT(1) AS ColumnsCount FROM dbo.'
+ @TableName + ';'
EXEC (@sql)
FETCH NEXT FROM My_Cursor INTO @TableName;
END
CLOSE My_Cursor;
DEALLOCATE My_Cursor;
--PRINT @sql

--EXEC (@sql)

SELECT * FROM TableRowCount WHERE ColumnsCount > 0 ORDER BY ColumnsCount DESC

--查主键

SELECT b.name AS '表名' ,
CASE WHEN c.NAME IS NULL THEN '无'
ELSE '有'
END AS '主键'
FROM sysobjects b
LEFT JOIN ( ( SELECT OBJECT_NAME(a.parent_obj) AS name
FROM sysobjects a
WHERE xtype = 'PK'
) ) c ON b.NAME = c.name
WHERE b.xtype = 'U'
ORDER BY c.NAME DESC