--取出数据库1中的表名，字段名 以及 数据类型
USE TestDB1; --
GO
SELECT
a.name AS TableName, b.name AS ColName, c.name AS DataType
INTO
#tmptable
FROM
sysobjects a --存储库中所有的数据表信息
INNER JOIN syscolumns b ON a.id = b.id --数据库的各表的所有字段
INNER JOIN systypes c ON b.xtype = c.xtype --数据类型
WHERE
a.xtype = 'U'; --类型为 U 的是用户表
GO
--取出对比数据库的表名 字段名以及数据类型
USE TestBD2;
SELECT
a.name AS TableName, b.name AS ColName, c.name AS DataType
INTO
#tmptable1
FROM
sysobjects a
INNER JOIN syscolumns b ON a.id = b.id
INNER JOIN systypes c ON c.xtype = b.xtype
WHERE
a.xtype = 'U';
GO
--比较两表中的数据差异
--);
GO
SELECT
*
FROM
#tmptable a
WHERE
NOT EXISTS ( SELECT
*
FROM
#tmptable1 b
WHERE
a.tablename = b.tablename )
ORDER BY TableName
--最后那个比较语句应该写成这样，否则表存在的话查不出它缺少的字段
SELECT
*
FROM
#tmptable a
WHERE
NOT EXISTS ( SELECT
*
FROM
#tmptable1 b
WHERE
a.tablename = b.tablename and a.ColName = b.ColName)