Re: [GENERAL] Feature Request: Better handling of foreign keys in DELETE statements

2011-12-19 Thread Hannes Erven
Hi Daniel, > Now I wanted to delete about 10 million addresses (that are not > referenced anymore from anywhere), and have a statement like: What about: DELETE FROM address WHERE id IN ( SELECT id FROM address EXCEPT ( SELECT address_id FROM tab1 UNION AL

Re: [GENERAL] Feature Request: Better handling of foreign keys in DELETE statements

2011-12-19 Thread Pavel Stehule
2011/12/19 Marti Raudsepp : > On Mon, Dec 19, 2011 at 18:14, Pavel Stehule wrote: >> you can disable check per session if you need >> ALTER TABLE ... DISABLE TRIGGER ALL; > > This is NOT a per-session command, this applies to all connections and > queries, and may allow incorrect data into the tab

Re: [GENERAL] Feature Request: Better handling of foreign keys in DELETE statements

2011-12-19 Thread Marti Raudsepp
On Mon, Dec 19, 2011 at 18:14, Pavel Stehule wrote: > you can disable check per session if you need > ALTER TABLE ... DISABLE TRIGGER ALL; This is NOT a per-session command, this applies to all connections and queries, and may allow incorrect data into the table. Don't do this! (And it doesn't ad

Re: [GENERAL] Feature Request: Better handling of foreign keys in DELETE statements

2011-12-19 Thread Pavel Stehule
Hello 2011/12/19 Daniel Migowski : > Hi, > > > > I face the following problem: I have a large table with 12 million > addresses, referenced by 20 other tables (some containing about one million > entries). There are indexes on the foreign keys. > > > > Now I wanted to delete about 10 million addre

Re: [GENERAL] Feature Request: Better handling of foreign keys in DELETE statements

2011-12-19 Thread Chris Angelico
On Tue, Dec 20, 2011 at 3:01 AM, Daniel Migowski wrote: > DELETE FROM address > > WHERE id NOT IN (SELECT address_id FROM bank where address_id IS NOT NULL) > >    AND id NOT IN (SELECT poboxaddress_id FROM bank where poboxaddress_id IS > NOT NULL) > >    AND id NOT IN (SELECT address_id FROM bank

[GENERAL] Feature Request: Better handling of foreign keys in DELETE statements

2011-12-19 Thread Daniel Migowski
Hi, I face the following problem: I have a large table with 12 million addresses, referenced by 20 other tables (some containing about one million entries). There are indexes on the foreign keys. Now I wanted to delete about 10 million addresses (that are not referenced anymore from anywhere),