Re: more than one possible column value

2001-12-04 Thread Etienne Marcotte
well I index both because it enables to pull data without even reading on the table.It reads only in the B-Tree index since it's both numeric. There is a section on mySQl optimization in the mySQL guide on the webpage. If you want to find all files that have this or that extension, mySQL will u

Re: more than one possible column value

2001-12-04 Thread Erik Price
On Tuesday, December 4, 2001, at 01:23 PM, Etienne Marcotte wrote: > CREATE TABLE filetypes ( > fileID smallint unsigned not null, > typeID smallint unsigned not null, > unique index (fileID,typeID), > unique index (typeID,fileID) > ) One question, though. Do I have to construct indexes in bot

Re: more than one possible column value

2001-12-04 Thread Erik Price
I understand now. There needs to be a table in between "files" and "types". This allows me to assign two different rows in the "types" table (say, JPG and JPEG) to the same row in the "files" table, or two different rows in the "files" table to the same row in the "types" table. This seems l

Re: more than one possible column value

2001-12-04 Thread Etienne Marcotte
hum I have an hard time understanding, but if I'm right: CREATE TABLE files( fileID smallint unsigned auto_increment, filename varchar(36) not null, primary key (fileID) ) CREATE TABLE types( typeID smallint unsigned auto_increment, typename varchar(36) not null, typeext char(4) not null unique,