sqlserver 读取主键值

SELECT

 

[表名]=case when a.colorder=1 then d.nameelse '' end,

 

[表说明]=case when a.colorder=1 thenisnull(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 FROMsysobjects 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 ANDcolid=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.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_idand a.colid=g.minor_id

 

left join sys.extended_properties f on d.id=f.major_idand f.minor_id=0

 

--where d.name='TableName'   --如果只查询指定表,加上此条件

 

orderby a.id,a.colorder