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数据库手边系列:SQLServer数据表信息

 2007-11-11 10:03:31 来源:WEB开发网   
核心提示: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

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

Tags:数据库 手边 系列

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