Question

I am having a problem with this SQL Statement:

$sql="SELECT b.FrameNumber, b.BikeCode, IF(b.ProductID = 0, p.FrameNumber) 
   AS FrameNumber 
 FROM BikeStock b LEFT JOIN Purchase p ON b.FrameNumber = p.FrameNumber 
 WHERE b.bikecode = '$bikecode'";

I want the SQL statement to work in this way:

Select FrameNumber & BikeCode from BikeStock 
THEN IF ProductID(BikeStock) is equal to 0 
     then it will grab the framenumber from the purchase table where bikecode is equal to $bikecode

Any Ideas?

Thanks in advance.

Answer 1

The MySQL IF statement has the following syntax: IF(condition, expression if true, expression if false).

As far as I can see from your question you are actually looking for a WHERE clause (remember, you can have multiple conditions in WHERE – use boolean operators to combine them):

SELECT b.FrameNumber, b.BikeCode, p.FrameNumber
FROM BikeStock b
LEFT JOIN Purchase p ON b.FrameNumber = p.FrameNumber
WHERE b.bikecode = :bikecode AND b.ProductID = 0