列出SQL SERVER数据库所有表，字段名，主键，类型，长度，小数位数等信息

最新推荐文章于 2025-09-03 15:58:35 发布

转载最新推荐文章于 2025-09-03 15:58:35 发布 · 128 阅读

0 ·

CC 4.0 BY-SA版权

原文链接：http://www.cnblogs.com/linpengfeixgu/articles/1214685.html

文章标签：

#数据库

本文提供了一种使用 SQL 查询来获取 SQL Server 中表的所有字段及其详细属性的方法，包括字段名称、类型、长度等，并展示了如何判断字段是否为主键或允许空值。

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 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) 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

转载于:https://www.cnblogs.com/linpengfeixgu/articles/1214685.html