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Postgres避免在删除级联时触发

[英]Postgres avoid Trigger on delete cascade

原文 2013-05-21 13:16:00 6 1 sql/ postgresql/ triggers/ cascade

Hello i have a problem with a Trigger 你好，我有一个触发器的问题

i have 2 tables : 我有2 张桌子 ：

t_mandant t_mandant
t_user_has_mandant t_user_has_mandant

when i delete a row in t_user_has_mandant i call a trigger beforeDeleteUserMandant() but i need a possibility to ignore the trigger call when i delete a mandant from t_mandant 当我在t_user_has_mandant中 删除一行时，我在beforeDeleteUserMandant （）中调用触发器，但是当我从t_mandant中删除一个mandant时，我需要忽略触发器调用的可能性

because t_user_has_mandant has a foreign key on t_mandant which is on delete cascade . 因为t_user_has_mandant对t_mandant 外键是在删除级联 。

im using postgres 8.4 我正在使用postgres 8.4

1 个解决方案

Read this page of the manual. 阅读this手册的this页。

Using the variable 使用变量

TG_TABLE_NAME TG_TABLE_NAME

Data type name; 数据类型名称； the name of the table that caused the trigger invocation. 引起触发器调用的表的名称。

You can determine if the DELETE was from t_user_has_mandant or t_mandant . 您可以确定DELETE是来自t_user_has_mandant还是t_mandant 。

Postgres级联删除与触发器 - Postgres cascade delete with trigger

使用 fkey 删除 postgres 触发器 - On delete postgres trigger with fkey

如何为postgres编写DELETE CASCADE？ - How does one write a DELETE CASCADE for postgres?

Postgres- 级联到关系表的硬删除 - Postgres- hard delete with cascade to relation table

当触发层叠删除时如何禁用触发器 - How to disable trigger when a Cascade On Delete if fired

Oracle：ON DELETE CASCADE导致触发器递归 - Oracle: ON DELETE CASCADE causing trigger recursion

MSSQL：删除级联与FOR删除触发器的优先级 - MSSQL: Priority level of Delete Cascade vs FOR Delete Trigger

触发删除以避免悬空引用 - Trigger on delete to avoid dangling references

是否有可能在删除触发器中告诉它是否是由级联删除FK引起的？ - Is it possible to tell in a delete trigger whether it was caused by a cascade delete FK?

删除级联上的外键约束不起作用postgres - Foreign key Constraint on delete cascade does not work postgres

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相关问题 Postgres级联删除与触发器 - Postgres cascade delete with trigger 使用 fkey 删除 postgres 触发器 - On delete postgres trigger with fkey 如何为postgres编写DELETE CASCADE？ - How does one write a DELETE CASCADE for postgres? Postgres- 级联到关系表的硬删除 - Postgres- hard delete with cascade to relation table 当触发层叠删除时如何禁用触发器 - How to disable trigger when a Cascade On Delete if fired Oracle：ON DELETE CASCADE导致触发器递归 - Oracle: ON DELETE CASCADE causing trigger recursion MSSQL：删除级联与FOR删除触发器的优先级 - MSSQL: Priority level of Delete Cascade vs FOR Delete Trigger 触发删除以避免悬空引用 - Trigger on delete to avoid dangling references 是否有可能在删除触发器中告诉它是否是由级联删除FK引起的？ - Is it possible to tell in a delete trigger whether it was caused by a cascade delete FK? 删除级联上的外键约束不起作用postgres - Foreign key Constraint on delete cascade does not work postgres

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