order by BIG_INT dpesnt work...

Hi, why my query doesnt work and the order doesnt work. instead of ordering by a number its order by a string. here is query:

$sql = " SELECT * FROM p_transaction AS t, p_joinpgm AS j,p_merchant as m";

$sql .= "where  AND t_joinpgmid = '$joinid' AND t.t_joinpgmid = j.joinpgm_id

AND j.joinpgm_merchantid=m.merchant_id order by t_id desc";

Your query is malformed. Right after the WHERE clause you have an "AND". Run your query through PHPMyAdmin to get it right - then create it in the code.

Also, it does look like the fields referenced in the WHERE and ORDER BY clauses have an improper field name. I assume "t_joinpgmid" should be "t.joinpgmid" and "t_id" should be "t.id".

I would also suggest using JOINS instead of joining the data in the WHERE clause

SELECT *
FROM p_transaction AS t
JOIN p_joinpgm AS j ON t.t_joinpgmid = j.joinpgm_id
JOIN p_merchant as m ON j.joinpgm_merchantid = m.merchant_id

WHERE t.joinpgmid = '$joinid'

ORDER BY t.id desc

And, lastly, list out the fields you need in the SELECT clause rather than using '*'. It's inefficient to be querying data that you won't use

If you were to run that, you would have this query (view the bold portion)

SELECT * FROM p_transaction AS t, p_joinpgm AS j,p_merchant as mwhere  AND t_joinpgmid = '$joinid' AND t.t_joinpgmid = j.joinpgm_id

                    AND j.joinpgm_merchantid=m.merchant_id order by t_id desc

add a space after the "m" in the first part or before the "where" in the second part. Also, as Psycho stated, remove the "AND" after the "where"