cascading-deletes

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Manually call cascade delete?

Let\'s say I have 3 tables, \"child1\", \"child2\" and \"child3\", that all have a foreign key to the table \"parent\".[详细]

2023-04-11 12:41 分类：问答
MySQL - On delete cascade issue

I have 3 table: A,B and C. Relations are: A->B 1:1 A->C 1:n Table A is the main table: CREATE TABLE IF NOT EXISTS `A` ([详细]

2023-04-11 07:49 分类：问答
How to cascade deletions with Doctrine 1.2?

I have been struggling with defining cascade behavior in Doctrine ORM. According to the documentation, one is supposed to use onDelete: CASCADE for database-level cascade (which is what I am trying t[详细]

2023-04-06 21:10 分类：问答
Hibernate cascade="all-delete-orphan", doesn't delete orphans

I am having trouble deleting orphan nodes using Hibernate with the following mapping @OneToMany(fetch = FetchType.LAZY, mappedBy = \"seizure\",orphanRemoval=true)[详细]

2023-04-03 19:05 分类：问答
MySQL Not allowing delete even though FK relationship ON DELETE CASCADE set

I am working on a project that makes use of a MySQL Database to store snippets of code for use on multiple websites. For each content snippet I also keep an edit history table, to which I add a record[详细]

2023-04-03 10:56 分类：问答
Django 1.2 PostgreSQL cascading delete for keys with ON DELETE NO ACTION

I have a postgresql database with about 150 tables(it\'s a Django 1.2 project). Django adds ON DELETE NO ACTION and ON UPDATE NO ACTION to foreign keys at the time of table creation.[详细]

2023-04-03 04:39 分类：问答
SQL command to show if table is set to cascade on delete

I need to delete some SQL Azure database entries, and I\'m not sure if the casca开发者_如何转开发de on delete is specified or not. If I by accident delete something important, I\'m in a world of hurt.[详细]

2023-04-02 01:22 分类：问答
Is there any way to generate a cascade delete statement?

Let\'s say I have a row in Table A I wish to delete but there a multiple foreign key constraints in other tables. Is there a way to automatically generate the delete command?[详细]

2023-03-31 06:41 分类：问答
How to delete data from parent table in mysql5?

Hi I am using mysql5 innoDB database. I want to开发者_如何转开发 forcefully delete data from parent row and its related child table data\'s. How can I do that. Any one can help me.If you use innodb yo[详细]

2023-03-30 18:07 分类：问答
Delete rows from several tables in one query

What is the proper开发者_运维问答 way to delete rows from several tables in one query? The reason I ask is because I am doing this with PHP.If I use multiple queries to delete from each table one at[详细]

2023-03-28 22:14 分类：问答