I'm using left join in MySQL as mentioned below: SELECT Q.QUESTION_ID, school_id FROM Q_MASTER AS Q LEFT JOIN ( SELECT keyword, school_id FROM ...
I want to create a temporary table with some select-data. My (strange) problem is that I have to do the same query more than one time. CREATE TEMPORARY TABLE IF NOT EXISTS cache (id int(11) NOT ...
Is there a way to create an index in MySQL if it does not exist? MySQL does not support the obvious format: CREATE INDEX IF NOT EXISTS index_name ON table(column) ERROR 1064 (42000): You have an ...