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posted 10 years ago
Database
Last updated 2 years ago.
0

I think only you can do is entirely turn off constraint checks temporarily.

<?php
DB::statement('SET FOREIGN_KEY_CHECKS=0');
// insert stuff
DB::statement('SET FOREIGN_KEY_CHECKS=1');
Last updated 2 years ago.
0

turning off constraint (via FOREIGN_KEY_CHECKS) is mysql specific, also, this will not force constraint checking any time later so, some foreign keys may be invalid and no way to know that

i want to use postgresql, as it supports DEFERRABLE constraint checking

Last updated 2 years ago.
0

any idea?

Last updated 2 years ago.
0

Correct me if I'm wrong, but for me it seems your problem is not when creating the table but populating a lot of data into it. So, it's not about migration but seeding.

If that's the case, and you have a really huge amount of data, prefer loading it via LOAD DATA LOCAL INFILE using data from a csv file...

http://dev.mysql.com/doc/refman/5.5/en/load-data.html

You can issue it from a raw query. It performs as a charm, once this resource is designed for this purpose, works with all engines. The only performance issue is when inserting lots of data in partitioned myisam tables, because they have a table-level locking (which turns into partition-level locking). For engines like innodb, which have row-level locking, it's very fast, and it does not perform any checks prior finishing the process.

Last updated 2 years ago.
0

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