/*--比较两个数据库的表结构差异
--*/
/*--调用示例
exec p_comparestructure @#xzkh_model@#,@#xzkh_new@#
--*/
if exists (select * from dbo.sysobjects where id = object_id(N@#[dbo].[p_comparestructure]@#) and OBJECTPROPERTY(id, N@#IsProcedure@#) = 1)
drop procedure [dbo].[p_comparestructure]
GO
create proc p_comparestructure
@dbname1 varchar(250), --要比较的数据库名1
@dbname2 varchar(250) --要比较的数据库名2
as
create table #tb1(表名1 varchar(250),字段名 varchar(250),序号 int,标识 bit,主键 bit,类型 varchar(250),
占用字节数 int,长度 int,小数位数 int,允许空 bit,默认值 varchar(500),字段说明 varchar(500))
create table #tb2(表名2 varchar(250),字段名 varchar(250),序号 int,标识 bit,主键 bit,类型 varchar(250),
占用字节数 int,长度 int,小数位数 int,允许空 bit,默认值 varchar(500),字段说明 varchar(500))
--得到数据库1的结构
exec(@#insert into #tb1 SELECT
表名=d.name,字段名=a.name,序号=a.colid,
标识=case when a.status=0x80 then 1 else 0 end,
主键=case when exists(SELECT 1 FROM @#+@dbname1+@#..sysobjects where xtype=@#@#PK@#@# and name in (
SELECT name FROM @#+@dbname1+@#..sysindexes WHERE indid in(
SELECT indid FROM @#+@dbname1+@#..sysindexkeys WHERE id = a.id AND colid=a.colid
))) then 1 else 0 end,
类型=b.name, 占用字节数=a.length,长度=a.prec,小数位数=a.scale, 允许空=a.isnullable,
默认值=isnull(e.text,@#@#@#@#@#@#),字段说明=isnull(g.[value],@#@#@#@#@#@#)
FROM @#+@dbname1+@#..syscolumns a
left join @#+@dbname1+@#..systypes b on a.xtype=b.xusertype
inner join @#+@dbname1+@#..sysobjects d on a.id=d.id and d.xtype=@#@#U@#@# and d.name<>@#@#dtproperties@#@#
left join @#+@dbname1+@#..syscomments e on a.cdefault=e.id
left join @#+@dbname1+@#..sysproperties g on a.id=g.id and a.colid=g.smallid
order by a.id,a.colorder@#)
--得到数据库2的结构
exec(@#insert into #tb2 SELECT
表名=d.name,字段名=a.name,序号=a.colid,
标识=case when a.status=0x80 then 1 else 0 end,
主键=case when exists(SELECT 1 FROM @#+@dbname2+@#..sysobjects where xtype=@#@#PK@#@# and name in (
SELECT name FROM @#+@dbname2+@#..sysindexes WHERE indid in(
SELECT indid FROM @#+@dbname2+@#..sysindexkeys WHERE id = a.id AND colid=a.colid
))) then 1 else 0 end,
类型=b.name, 占用字节数=a.length,长度=a.prec,小数位数=a.scale, 允许空=a.isnullable,
默认值=isnull(e.text,@#@#@#@#@#@#),字段说明=isnull(g.[value],@#@#@#@#@#@#)
FROM @#+@dbname2+@#..syscolumns a
left join @#+@dbname2+@#..systypes b on a.xtype=b.xusertype
inner join @#+@dbname2+@#..sysobjects d on a.id=d.id and d.xtype=@#@#U@#@# and d.name<>@#@#dtproperties@#@#
left join @#+@dbname2+@#..syscomments e on a.cdefault=e.id
left join @#+@dbname2+@#..sysproperties g on a.id=g.id and a.colid=g.smallid
order by a.id,a.colorder@#)
--and not exists(select 1 from #tb2 where 表名2=a.表名1)
select 比较结果=case when a.表名1 is null and b.序号=1 then @#库1缺少表：@#+b.表名2
when b.表名2 is null and a.序号=1 then @#库2缺少表:@#+a.表名1
when a.字段名 is null and exists(select 1 from #tb1 where 表名1=b.表名2) then @#库1 [@#+b.表名2+@#] 缺少字段：@#+b.字段名
when b.字段名 is null and exists(select 1 from #tb2 where 表名2=a.表名1) then @#库2 [@#+a.表名1+@#] 缺少字段：@#+a.字段名
when a.标识<>b.标识 then @#标识不同@#
when a.主键<>b.主键 then @#主键设置不同@#
when a.类型<>b.类型 then @#字段类型不同@#
when a.占用字节数<>b.占用字节数 then @#占用字节数@#
when a.长度<>b.长度 then @#长度不同@#
when a.小数位数<>b.小数位数 then @#小数位数不同@#
when a.允许空<>b.允许空 then @#是否允许空不同@#
when a.默认值<>b.默认值 then @#默认值不同@#
when a.字段说明<>b.字段说明 then @#字段说明不同@#
else @#@# end,
*
from #tb1 a
full join #tb2 b on a.表名1=b.表名2 and a.字段名=b.字段名
where a.表名1 is null or a.字段名 is null or b.表名2 is null or b.字段名 is null
or a.标识<>b.标识 or a.主键<>b.主键 or a.类型<>b.类型
or a.占用字节数<>b.占用字节数 or a.长度<>b.长度 or a.小数位数<>b.小数位数
or a.允许空<>b.允许空 or a.默认值<>b.默认值 or a.字段说明<>b.字段说明
order by isnull(a.表名1,b.表名2),isnull(a.序号,b.序号)--isnull(a.字段名,b.字段名)
go
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