Question

I have a table with the following fields: gallery(picID, picTimeStamp, location).

What I want is that when someone is uploading a new picture to the gallery, the location will get the same value that picID gets (and picID gets its value by auto increment).

I have tried:

"INSERT INTO gallery(picID, picTimeStamp, location) VALUES (null,'.time().',picID)"

but it is not working. I do not get any errors, the location just always has a zero in it.

Thanks!

Answer 1

You should probably be using trigger like this

CREATE TRIGGER trigger_name BEFORE INSERT ON gallery FOR EACH ROW 
BEGIN 
   DECLARE next_id INT; 
   SET next_id = (SELECT AUTO_INCREMENT FROM gallery WHERE TABLE_NAME='gallery'); 
   SET NEW.location=next_id; 
END 

edit: Should be after insert trigger instead of before because auto_increment number only gets set after the record is inserted. Sorry bout that!