SQL Server 对比数据库差异语句

在SQL Server中，可以使用以下语句来对比数据库之间的差异：

1. 对比表结构差异：

   -- 对比两个数据库中的表差异
   SELECT
       t1.name AS TableName,
       t1.object_id AS ObjectId,
       CASE WHEN t2.name IS NULL THEN 'Only in Database 1' ELSE 'Different' END AS [Status]
   FROM
       Database1.sys.tables t1
       LEFT JOIN Database2.sys.tables t2 ON t1.name = t2.name
   UNION ALL
   SELECT
       t2.name AS TableName,
       t2.object_id AS ObjectId,
       'Only in Database 2' AS [Status]
   FROM
       Database2.sys.tables t2
       LEFT JOIN Database1.sys.tables t1 ON t2.name = t1.name
   WHERE
       t1.name IS NULL;
   
2. 对比表数据差异：

   -- 对比两个表的数据差异
   SELECT *
   FROM Database1.dbo.TableName
   EXCEPT
   SELECT *
   FROM Database2.dbo.TableName;
   

3. 对比存储过程差异：

   -- 对比两个数据库中的存储过程差异
   SELECT
       p1.name AS ProcedureName,
       p1.object_id AS ObjectId,
       CASE WHEN p2.name IS NULL THEN 'Only in Database 1' ELSE 'Different' END AS [Status]
   FROM
       Database1.sys.procedures p1
       LEFT JOIN Database2.sys.procedures p2 ON p1.name = p2.name
   UNION ALL
   SELECT
       p2.name AS ProcedureName,
       p2.object_id AS ObjectId,
       'Only in Database 2' AS [Status]
   FROM
       Database2.sys.procedures p2
       LEFT JOIN Database1.sys.procedures p1 ON p2.name = p1.name
   WHERE
       p1.name IS NULL;
   

   这些示例语句可以根据实际情况进行修改，将数据库名、表名、存储过程名等替换为相应的对象名称。注意，这些语句仅比较了对象的差异，并不考虑详细的定义和属性差异。如果需要更详细的比较和分析，可以使用专门的工具如Redgate SQL Compare