查询出各（某）表字段的属性
-
- 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='要查询的表'
- order by
- a.id,a.colorder
-
- /*
- 表名 表说明 字段序号 字段名 标识 主键 类型 占用字节数 长度 小数位数 允许空 默认值 字段说明
-
