Problem creating primary key on blob column
Hello the list, I try to create a table with a TEXT primary key, and this error message appear : ERROR 1170 : BLOB column 'MY_COLUMN' used in key specification without a key length. What is the syntax to settle a key length ? Here is my sql code to create my table: -- -- Table : MY_TABLE -- create table MY_TABLE ( MY_COLUMN_1TEXT not null, MY_COLUMN_2VARCHAR(2) not null, MY_COLUMN_3TEXT not null, constraint PK_TRADUCTION primary key (MY_COLUMN_1, MY_COLUMN_2) ) ; - Dominique TOMASSONI - [EMAIL PROTECTED] SunGard Investment Management Systems 173, Bureaux de la Colline Bâtiment E 92213 Saint-Cloud Tél : +33 1 49 11 31 23 Fax : +33 1 49 11 30 65 - - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
Problem creating primary key on blob column
ERROR 1170 : BLOB column 'MY COLUMN' used in key specification without a key length. What is the syntax to settle a key length ? ALTER TABLE your_table add key blob_field (blob_field(50)); Or, you can create a table like this one: CREATE TABLE `your_table` ( `id` int(10) unsigned NOT NULL AUTO_INCREMENT, `name` varchar(2) NOT NULL default '', `blob_field` TEXT, PRIMARY KEY (`id`), KEY `blob_field` (`blob_field`(20)) # indexed on the first 20 characters of the field ) TYPE=MyISAM BLOB and TEXT field can be indexed on a fixed amount of data only. Therefore you must specify the length of the index. Giuseppe - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
