Re: Question

From: Andriy Pyrozhenko <andriy(dot)pyrozhenko(at)vanjaonline(dot)com>
To: pgsql-sql(at)postgresql(dot)org
Subject: Re: Question
Date: 2001-11-23 07:55:13
Message-ID: 1424171808.20011123095513@vanjaonline.com
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Hello Christopher,

>> I don't need delete record from jobs when I delete record from
>> activity. But I need delete record from activity when I delete the
>> record from jobs and I need to find this job_id in activities table!
>> What must I do?
>>
>> CKL> Question: Why don't you just set up a foreign key that will
>> achieve exactly
>> CKL> the same thing without using RULEs?
>>
>> CKL> ie. ALTER TABLE activities ADD FOREIGN KEY (job_id)
>> REFERENCES jobs(job_id)
>> CKL> ON DELETE CASCADE;

CKL> My ALTER TABLE statement above will do exactly this.

CKL> It will delete activities when a job is deleted. Try it in a test database.

But also need delete activities!

--
Best regards,
Andriy mailto:andriy(dot)pyrozhenko(at)vanjaonline(dot)com

In response to

  • Re: Question at 2001-11-23 07:33:49 from Christopher Kings-Lynne

Responses

  • Re: Question at 2001-11-24 09:39:01 from Andrew G. Hammond

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