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4 rows in set (0.00 sec) mysql> delete from t_group where id=2; //从主表中删除一个记录 Query OK, 1 row affected (0.01 sec) mysql> select * from t_user_1; //子表中对应的属性值被自动设置为NULL +---+---+---+ | id | name | groupid | +---+---+---+ | 1 | dayu ...
cascade是一个framework,那个年代是面向对象思想的黄金年代。Columbia(一篇硕士论文)对其补充了很多细节:Yongwen Xu,Efficiency in the Columbia Database Query Optimizer(pages 1-35), inPortland State University, 1998 术语 expression:sql对应的执行计划。 group:cascade对于处理结果相同的表达式,归类为一个group。n...
4 rows in set (0.00 sec) mysql> delete from t_group where id=2; //从主表中删除一个记录 Query OK, 1 row affected (0.01 sec) mysql> select * from t_user_1; //子表中对应的属性值被自动设置为NULL +---+---+---+ | id | name | groupid | +---+---+---+ | 1 | dayu ...
Query OK, 2 rows affected (0.08 sec) Records: 2 Duplicates: 0 Warnings: 0 mysql> insert into t_user values (1,'huanhuan',1); //实体完整性测试,不能插入重复主键值 ERROR 1062 (23000): Duplicate entry '1' for key 'PRIMARY' mysql> insert into t_user values (3,'maiqi',3); //参照...
BoundariesCreateCascadeDeleteJobQueryParamProperties BoundariesCreateOrUpdate BoundariesCreateOrUpdate200Response BoundariesCreateOrUpdate201Response BoundariesCreateOrUpdateBodyParam BoundariesCreateOrUpdateDefaultHeaders BoundariesCreateOrUpdateDefaultResponse BoundariesCreateOrUpdateMediaTypesParam BoundariesCreateOr...
KillQueryNotificationSubscriptionStatement KillStatement KillStatsJobStatement LabelStatement LedgerOption LedgerTableOption LedgerViewOption LeftFunctionCall LikePredicate LineNoStatement ListenerIPEndpointProtocolOption ListTypeCopyOption Literal LiteralAtomicBlockOption LiteralAuditTargetOption LiteralAvailability...
It can also be used with query builder in this way because query builder listener is executed after query, we need to use transaction for rollback query on error due to restricted relationships try { DB::beginTransaction(); //Start db transaction for rollback query when error User::limit(...
If the present plan indicates overspend the controller can assess a recovery plan, by opening a query window and testing alternative options. The foundations of Cascade include: the Unix multi-user operating system; the Oracle relatio...
KillQueryNotificationSubscriptionStatement KillStatement KillStatsJobStatement LabelStatement LedgerOption LedgerTableOption LedgerViewOption LeftFunctionCall LikePredicate LineNoStatement ListenerIPEndpointProtocolOption ListTypeCopyOption Literal LiteralAtomicBlockOption LiteralAuditTargetOption LiteralAvailability...