Hi Andy,
That statement won't work because you have to provide the possible values
for the enum colummn. Say you can only have Y or N or that field, that you
need to type:

ALTER TABLE `test` CHANGE `field` `field` ENUM('Y','N');

By the way, if you have 250 different possible entries , I would say not to
go with ENUM, but then again it is all depend on you, and your company's
policies.


Gurhan


-----Original Message-----
From: andy [mailto:[EMAIL PROTECTED]]
Sent: Saturday, April 06, 2002 7:18 AM
To: [EMAIL PROTECTED]
Subject: [PHP-DB] how to change a column to ENUM


Hi there,

I did just do a procedure anlyse to my table and figured out that the best
type would be enum.

I tryed:
ALTER TABLE `test` CHANGE `field` `field` ENUM

but I am getting an error: You have an error at your sql sytax at ""

Is this column type even possible, because I have over 2million entries,
while the field has only 250 different values.
Is this type really faster? Currently my structure looks like this:

id    medium_int(9)
field1 char50
field2 char2
field3 char2

Field 1 contains about 1.5 million different entries.

Thanx for any help,

Andy



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