sqlserver查询某个表有哪些字段_sql 查某个表字段

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], '')
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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
sys.extended_properties g
on
a.id = G.major_id and a.colid = g.minor_id
left join
sys.extended_properties f
on
d.id = f.major_id and f.minor_id = 0
where
d.name = ‘AAA’
order by
a.id,a.colorder

SELECT
字段名 = a.name,
类型 = b.name,
占用字节数 = a.length,
长度 = COLUMNPROPERTY(a.id, a.name, 'PRECISION'),
允许空 = case when a.isnullable = 1 then '√'else '' end
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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
sys.extended_properties g
on
a.id = G.major_id and a.colid = g.minor_id
left join
sys.extended_properties f
on
d.id = f.major_id and f.minor_id = 0
where
d.name = ‘AAA’
order by
a.id,a.colorder