谁知道几种查询表结构的方法

谁知道几种查询表结构的方法
谁知道几种查询表结构的方法

谁知道几种查询表结构的方法
方法一：使用存储结构来执行,查询某一个表的结构create proc getTableStruct @tabName varchar(20) as SELECT 表名 = case when a.colorder=1 then d.name else '' end,表说明 = case when a.colorder=1 then isnull(f.value,'') else '' end,字段序号 = a.colorder,字段名 = a.name,标识 = case when COLUMNPROPERTY( a.id,a.name,'IsIdentity')=1 then '√'else '' end,主键 = case when exists(SELECT 1 FROM sysobjects where xtype='PK' and parent_obj=a.id and name in ( SELECT name FROM sysindexes WHERE indid in( SELECT indid FROM sysindexkeys WHERE id = a.id AND colid=a.colid))) then '√' else '' end,类型 = b.name,占用字节数 = a.length,长度 = COLUMNPROPERTY(a.id,a.name,'PRECISION'),小数位数 = isnull(COLUMNPROPERTY(a.id,a.name,'Scale'),0),允许空 = case when a.isnullable=1 then '√'else '' end,默认值 = isnull(e.text,''),字段说明 = isnull(g.[value],'') FROM syscolumns a left join systypes b on a.xusertype=b.xusertype inner join sysobjects d on a.id=d.id and d.xtype='U' and d.name'dtproperties' left join syscomments e on a.cdefault=e.id left join sysproperties g on a.id=g.id and a.colid=g.smallid left join sysproperties f on d.id=f.id and f.smallid=0 where d.name in (@tabName) --如果只查询指定表,加上此条件 order by a.id,a.colorder GO 方法二：使用存储过程来执行,得到的是这个数据库中所有表及其结构 CREATE proc sp_tableStruct as ----- select ( case when a.colorder = 1 then d.name else '' end ) 表名,a.colorder 字段序号,a.name 字段名,( case when COLUMNPROPERTY (a.id,a.name,'isidentity') = 1 then '√' else '' end ) 标识,( case when ( select count(*) from sysobjects where name in ( select name from sysindexes where (id = a.id ) and ( indid in (select indid from sysindexkeys where ( id = a.id ) and ( colid in ( select colid from syscolumns where ( id = a.id ) and ( name = a.name )))))) and ( xtype ='PK')) > 0 then '√' else '' end ) 主键,b.name 类型,a.length 字节数,COLUMNPROPERTY ( a.id,a.name ,'PRECISION' ) as 长度,isnull ( COLUMNPROPERTY ( a.id,a.name ,'Scale'),0) as 小数位数,(case when a.isnullable = 1 then '√' else '' end ) 允许空,isnull ( e.text,'') 默认值,isnull (g.[value],'' ) as 字段说明 from syscolumns a left join systypes b on a.xtype = b.xusertype inner join sysobjects d on a.id = d.id and d.xtype='U' and d.name 'dtproperties' left join syscomments e on a.cdefault = e.id left join sysproperties g on a.id = g.id and a.colid = g.smallid order by a.id ,a.colorder GO 方法三：使用查询来查找所有表及表的结构 SELECT c.colid AS 序号,o.name AS 表名,c.name AS 列名,t.name AS 类型,c.length AS 长度,c.isnullable AS 允许空,CAST(m.[value] AS Varchar(100)) AS 说明 FROM dbo.syscolumns c INNER JOIN dbo.sysobjects o ON o.id = c.id AND objectproperty(o.id,N'IsUserTable') = 1 AND o.name 'dtproperties' INNER JOIN dbo.systypes t ON t.xusertype = c.xusertype LEFT OUTER JOIN dbo.sysproperties m ON m.id = o.id AND m.smallid = c.colorder ORDER BY o.name,c.colid