Re: Re: performance when inserting into child tables

From: <ryan.gaffuri_at_cox.net>
Date: Wed, 21 Apr 2004 15:26:40 -0400
Message-Id: <20040421192640.DJQE18641.lakermmtao05.cox.net@smtp.central.cox.net>

I am the only person on the system. I'm doing a data load.

I did an insert select on the parent and in ran in 1.5 hours.

I am doing the same insert select to the child and it has run for 6.5 hours. The foreign key is not indexed. I think it has to do with having to check the parent for data integrity, but I do not know if a lack of index on the child table matters. I have noticed this alot lately.

I have noticed that is worth when you have a cascade. Even if the insert is on the child table. Not sure what else to look at.

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Received on Wed Apr 21 2004 - 14:50:57 CDT