SqlServer表结构查询

-- 查询所有的表
select id,name from sysobjects where xtype='U';

-- 表结构查询
SELECT
表名 = case when a.colorder=1 then https://www.360docs.net/doc/3d6799500.html, 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 = https://www.360docs.net/doc/3d6799500.html,,
标识 = case when COLUMNPROPERTY( a.id,https://www.360docs.net/doc/3d6799500.html,,'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 = https://www.360docs.net/doc/3d6799500.html,,
占用字节数 = a.length,
长度 = COLUMNPROPERTY(a.id,https://www.360docs.net/doc/3d6799500.html,,'PRECISION'),
小数位数 = isnull(COLUMNPROPERTY(a.id,https://www.360docs.net/doc/3d6799500.html,,'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 https://www.360docs.net/doc/3d6799500.html,<>'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 https://www.360docs.net/doc/3d6799500.html,='DIM_HLB_YYXM' --如果只查询指定表,加上此条件
order by a.id,a.colorder