database - 有没有办法在 db2 v7 中启用/禁用约束？

Question

我必须将表从 Oracle 数据库复制到 db2 v7 数据库中，为了做到这一点（避免数百万次删除和创建），我想知道 db2 是否具有类似 Oracle 的功能，可以临时启用/禁用约束而不删除他们。

在此先感谢，毛罗。

score 5 · Accepted Answer

你可以做：

ALTER TABLE <table-name> ALTER FOREIGN KEY <constraint-name> NOT ENFORCED

然后重新启用：

ALTER TABLE <table-name> ALTER FOREIGN KEY <constraint-name> ENFORCED

score 1 · Accepted Answer

I'm not sure if this works in version 7, but you can try the following:

set integrity for table_name off
set integrity for table_name foreign key immediate unchecked

And then you can do your inserts. To re-enable, you can then do the following:

set integrity for table_name immediate checked

2 回答 2