Hi, I've got this problem: I have two tables and I want create third one with LEFT JOIN First table table1 containts field AA as a primary key (AA is NOT NULL). Second table table2 containts field AA as a primary key (AA is NOT NULL) too. Ex: CREATE TABLE a (PRIMARY KEY(AA)) SELECT table1.AA FROM table2 LEFT JOIN table1 ON table2.AA=table1.AA WHERE ...; The problem is, that mysql creates new table with field AA, but it's not NOT NULL (it's allow NULL) => I cannot create primary key on this field. Is it bug or I'm wrong ???
Regards John. --------------------------------------------------------------------- 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
