Mysql: RENAME TABLE IF EXISTS

Question

This DROP TABLE IF EXISTS works, too bad that RENAME TABLE IF EXISTS doesn\'t work.

Can anyone suggest a solution for this query?

Answer 1

I've managed to execute a code that always works and generates no errors when the table doesn't exist:

SELECT Count(*)
INTO @exists
FROM information_schema.tables 
WHERE table_schema = [DATABASE_NAME]
    AND table_type = 'BASE TABLE'
    AND table_name = 'video_top_day';

SET @query = If(@exists>0,
    'RENAME TABLE video_top_day TO video_top_day_for_delete',
    'SELECT \'nothing to rename\' status');

PREPARE stmt FROM @query;

EXECUTE stmt;

When you don't want to replace [DATABASE NAME] manually you can use the following variable

SELECT DATABASE() INTO @db_name FROM DUAL;