---生成启用or禁用指定表外键约束的sql
select 'ALTER TABLE ' + b.name + ' NOCHECK CONSTRAINT ' +a.name +';'
from sysobjects a,sysobjects b wherea.xtype ='f' and a.parent_obj = b.id ;
select 'ALTER TABLE ' + b.name + ' CHECK CONSTRAINT ' + a.name+';' from sysobjects a,sysobjects b wherea.xtype ='f' and a.parent_obj = b.id ; DECLARE @i INT DECLARE @nochecksql NVARCHAR(MAX) SET @nochecksql='' SELECT @i=COUNT(*) from sysobjects where xtype='u' WHILE(@i>0) BEGIN SELECT @nochecksql ='exec sp_msforeachtable ''alter table ['+name+'] nocheck constraint all'';'+CHAR(10) FROM( SELECT ROW_NUMBER() OVER(ORDER BY name) AS rownum,name from sysobjects where xtype='u') AS T WHERE rownum=@i SET @i=@i-1 PRINT (@nochecksql); END PRINT @nochecksql SELECT @i=COUNT(*) from sysobjects where xtype='u' DECLARE @checksql NVARCHAR(MAX) WHILE(@i>0) BEGIN SELECT @nochecksql+='exec sp_msforeachtable ''alter table ['+name+'] CHECK constraint all'';'+CHAR(10) FROM( SELECT ROW_NUMBER() OVER(ORDER BY name) AS rownum,name from sysobjects where xtype='u') AS T WHERE rownum=@i SET @i=@i-1 END PRINT @nochecksql