数据库人员手边系列:SQL Server数据表的信息

2008-04-02 10:31:37来源:互联网 阅读 ()

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  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 sysproperties g on a.id=g.id and a.colid=g.smallid

  left join sysproperties f on d.id=f.id and f.smallid=0

  --where d.name='要查询的表' --假如只查询指定表,加上此条件

  order by a.id,a.colorder


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