重新生成索引后,必须使用 ALTER TABLE CHECK CONSTRAINT 语句手动启用所有约束。 相关联的聚集索引处于禁用状态时,会自动禁用非聚集索引。 表或视图的聚集索引处于启用状态或删除了表的聚集索引时,才能启用这些非聚集索引。 除非使用 ALTER INDEX ALL REBUILD 语句启用了聚集索引,否则必须显式启用非聚集索引。 ALTER ...
DISABLE | ENABLE CONSTRAINT constraint_name 1. 2. 操作: alter table sys_user_f3 disable constraint fk_typeID_alter; 1. 2. select constraint_name,constraint_type,status from user_constraints where table_name='SYS_USER_F3'; 1. 4、删除外键约束 alter table sys_user_f3 drop constraint fk_typeI...
ALTER TABLE table_name ADD CONSTRAINT constraint_name CHECK (column_name condition) [DISABLE]; 1. 2. 6、 删除约束: --判断默认约束是否存在,如果存在则先删除,如果不存在则直接添加 if exists(select * from sysobjects where name=约束名) alter table 表名 drop constraint 约束名; 1. 2. 3....
When you disable a clustered index, all incoming and outgoing FOREIGN KEY constraints on the underlying table are also disabled. The constraint names are listed in a warning message when the index is disabled. After you rebuild the index, all constraints must be manually enabled by using the ...
字段定义constraint 约束名约否类型(字段名)-->unique,primarykey,check字段定义constraint 约否名foreingnkey(字段名)references表名(字段名)--->foreign三、建表时约束定义1.定义各种不同的约束--创建一个用于作外键的表tb_deptSQL>CREATETABLEtb_dept ...
Disable and Enable Constraint Checking on SQL Server Tables文章 28/12/2007 Found this script to disable/enable constraint checking here : SELECT 'ALTER TABLE ' + object_name(parent_obj) + ' NOCHECK CONSTRAINT ' + name FROM sysobjects WHERE xtype = 'F' ORDER BY object_name(...
Use SQL Server Management Studio Disable an index In Object Explorer, select the plus sign to expand the database that contains the table on which you want to disable an index. Select the plus sign to expand theTablesfolder. Select the plus sign to expand the table on which you want to ...
exec('alter table ['+@tbname+'] nocheck constraint all') -- nocheck关闭所有约束 check开启所有约束 fetch next from #tb into @tbname end close #tb deallocate #tb EXEC sp_MSForEachTable 'ALTER TABLE ? NOCHECK CONSTRAINT ALL' EXEC sp_MSForEachTable 'ALTER TABLE ? DISABLE TRIGGER ALL' ...
{ CHECK | NOCHECK } CONSTRAINT { ALL | constraint_name [ ,...n ] } | { ENABLE | DISABLE } TRIGGER { ALL | trigger_name [ ,...n ] } | SWITCH [ [ PARTITION ] source_partition_number_expression ] TO target_table [ PARTITION target_partition_number_expression ] [ WITH ( <low_...
Server1 的分区视图通过以下方式进行定义: SQL 复制 --Partitioned view as defined on Server1 CREATE VIEW Customers AS --Select from local member table. SELECT * FROM CompanyData.dbo.Customers_33 UNION ALL --Select from member table on Server2. SELECT * FROM Server2.CompanyData.dbo.Custome...