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pengdali 2003-02-10
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如果不知道主键名，只知道主键列：
-----------------删除主键列--------------
declare @a varchar(20)
select @a=c.name from syscolumns a,sysconstraints b,sysobjects c where a.id=object_id('表名') and a.name='主鍵列名' and a.id=b.id and b.constid=c.id and c.name like 'PK%'
exec('alter table 表名 drop constraint '+@a)
-----------------删除主键列--------------
declare @a varchar(20)
select @a=c.name from syscolumns a,sysconstraints b,sysobjects c where a.id=object_id('表名') and a.name='主鍵列名' and a.id=b.id and b.constid=c.id and c.name like 'PK%'
exec('alter table 表名 drop constraint '+@a)
pengdali 2003-02-10
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--------------删除主键------------
alter table alumn drop CONSTRAINT pk_name
ALTER TABLE 表 DROP COLUMN 编号
alter table alumn drop CONSTRAINT pk_name
ALTER TABLE 表 DROP COLUMN 编号
happydreamer 2003-02-10
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alter table tablename add CONSTRAINT PK_xxx PRIMARY KEY NONCLUSTERED ( Fieldname)
alter table tablename drop CONSTRAINT PK_xxx
alter table tablename drop CONSTRAINT PK_xxx
