sqlserver获取数据字段（表的字段和类型信息）

获取数据字段（表的字段和类型信息）

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 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.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 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='要查询的表' --如果只查询指定表,加上此条件 order by a.id,a.colorder