ALTER proc [dbo].[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 S ELECT
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(S ELECT 1 FROM \'+@dbname1+\'..sysobjects where xtype=\'\'PK\'\' and name in (
S ELECT name FROM \'+@dbname1+\'..sysindexes WHERE indid in(
S ELECT 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(cast(g.[value] AS varchar(500)),\'\'\'\')
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 S ELECT
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(S ELECT 1 FROM \'+@dbname2+\'..sysobjects where xtype=\'\'PK\'\' and name in (
S ELECT name FROM \'+@dbname2+\'..sysindexes WHERE indid in(
S ELECT 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(cast(g.[value] AS varchar(500)),\'\'\'\')
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(S ELECT 1 from #tb2 where 表名2=a.表名1)
S ELECT 比较结果=case when a.表名1 is null and b.序号=1 then @dbname1+\'缺少表:\'+b.表名2
when b.表名2 is null and a.序号=1 then @dbname2+\'缺少表:\'+a.表名1
when a.字段名 is null and exists(S ELECT 1 from #tb1 where 表名1=b.表名2) then @dbname1+\'.[\'+b.表名2+\'] 缺少字段:\'+b.字段名
when b.字段名 is null and exists(S ELECT 1 from #tb2 where 表名2=a.表名1) then @dbname2+\' .[\'+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)