sql 查询表的所有详细信息
SELECT (case when a.colorder=1 then d.name else '' end) as 表名,--如果表名相同就返回空 a.colorder as 字段序号, a.name as 字段名, (case when COLUMNPROPERTY( a.id,a.name, 'IsIdentity' )=1 then '√' else '' end) as 标识, (case when (SELECT count(*) FROM sysobjects--查询主键 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) as 主键,--查询主键END b.name as 类型, a.length as 占用字节数, 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) as 允许空, isnull(e.text,'' ) as 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 sys.extended_properties g on a.id=g.major_id AND a.colid = g.minor_id where d.name='TestTable' --所要查询的表 order by a.id,a.colorder