sql 系统函数取表基本信息
SELECT
表名=case when a.colorder=1 then d.name else ‘‘ end,
序号=a.colorder,
列名=a.name,
数据类型=b.name,
长度=COLUMNPROPERTY(a.id,a.name,‘PRECISION‘),
小数位=isnull(COLUMNPROPERTY(a.id,a.name,‘Scale‘),0),
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 ‘Y‘ else ‘‘ end,
外键= ‘‘,
允许空=case when a.isnullable=1 then ‘是‘else ‘否‘ end,
默认值=isnull(e.text,‘‘),
PB注释=isnull(p.pbc_cmnt,‘‘),
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 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
left join pbcatcol p on a.name=p.pbc_cnam and d.name=p.pbc_tnam
where d.name like ‘a_employee_mi‘ --如果只查询指定表,加上此条件
order by a.id,a.colorder
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