mysql index question

2002-05-16 Thread Taylor Lewick
Regarding mysql... 1) Are primary keys and foreign keys by default indexes for a table? 2) Do I have to use a special data other than float to allow for negative numbers, i.e. I want to be able to enter -1.76 and be able to later do math against that number... Thanks, Taylor Taylor Lewick

Re: mysql index question

2002-05-16 Thread Nick Stuart
From my understanding primary keys and foreign keys are indexed. Someone correct me if I'mwrong here. And you shouldn't have to do anything else to field besides make it a float to usenegative numbers. -Nick Regarding mysql... 1) Are primary keys and foreign keys by default indexes for a

Re: mysql index question

2002-05-16 Thread Egor Egorov
Taylor, Thursday, May 16, 2002, 4:22:37 PM, you wrote: TL Regarding mysql... TL 1) Are primary keys and foreign keys by default indexes for a table? Yeah. Primary key is index by default. Foreign key constraints you can create only on indexed column. TL 2) Do I have to use a special data other