ALTER TABLE [dbo].[state] ADD CONSTRAINT [PK_tblstustate] PRIMARY KEY CLUSTERED
(
[字段1],
[字段2],
[字段3],
[字段4],
[字段5]
) ON [PRIMARY]
GO
像这样在一个表中添加了一个由五个字段组成的联合主键.怎么样求这个表中有没有这个联合主键
(
[字段1],
[字段2],
[字段3],
[字段4],
[字段5]
) ON [PRIMARY]
GO
像这样在一个表中添加了一个由五个字段组成的联合主键.怎么样求这个表中有没有这个联合主键
SELECT TABLE_NAME,COLUMN_NAME FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE
WHERE TABLE_NAME<>'dtproperties'2:
EXEC sp_pkeys @table_name='表名'3:
select o.name as 表名,c.name as 字段名,k.colid as 字段序号,k.keyno as 索引顺序,t.name as 类型
from sysindexes i
join sysindexkeys k on i.id = k.id and i.indid = k.indid
join sysobjects o on i.id = o.id
join syscolumns c on i.id=c.id and k.colid = c.colid
join systypes t on c.xusertype=t.xusertype
where o.xtype = 'U' and o.name='要查询的表名'
and exists(select 1 from sysobjects where xtype = 'PK' and parent_obj=i.id and name = i.name)
order by o.name,k.colid
drop ...(