[GENERAL] Foreign keys and slow insert

2005-06-08 Thread Dan Black
I read in documentation that primary key doesn't require additional indexes but I could find nothing about foreign keys. Do I need to create additional indexes when I create foreign keys? Example: create table master { master_id INT4, master_name VARCHAR(64), CONSTRAINT master_pkey PRIMARY KEY

Re: [GENERAL] Foreign keys and slow insert

2005-06-08 Thread Stephan Szabo
On Wed, 8 Jun 2005, Dan Black wrote: I read in documentation that primary key doesn't require additional indexes but I could find nothing about foreign keys. Do I need to create additional indexes when I create foreign keys? Example: create table master { master_id INT4, master_name

Re: [GENERAL] Foreign keys and slow insert

2005-06-08 Thread Richard Huxton
Dan Black wrote: I read in documentation that primary key doesn't require additional indexes but I could find nothing about foreign keys. Do I need to create additional indexes when I create foreign keys? Example: create table master create table slave Do I need to create index CREATE

Re: [GENERAL] Foreign keys and slow insert

2005-06-08 Thread Dan Black
I've observed that inserts into slave table became slower when I use foreign key than without one. Can it be related to foreign key? And I am interested how much performance of database with foreign keys can be different from performance of database without foreign keys? In other words, how much

Re: [GENERAL] Foreign keys and slow insert

2005-06-08 Thread Scott Marlowe
On Wed, 2005-06-08 at 12:39, Dan Black wrote: I've observed that inserts into slave table became slower when I use foreign key than without one. Can it be related to foreign key? And I am interested how much performance of database with foreign keys can be different from performance of

Re: [GENERAL] Foreign keys and slow insert

2005-06-08 Thread Dan Black
I think 21 interns will be enough :)2005/6/8, Scott Marlowe [EMAIL PROTECTED]: On Wed, 2005-06-08 at 12:39, Dan Black wrote: I've observed that inserts into slave table became slower when I use foreign key than without one. Can it be related to foreign key? And I am interested how muchperformance