MySQL GROUP BY is not working in PDO prepared statement [duplicate] - php

Question

This question already has answers here:
Why does this PDO statement silently fail?
(2 answers)
Closed 1 year ago.
I have two statements: one is written with mysql_query, another with PDO:
mysql_query:
$sql = $mysql_query("SELECT `user_report`.* FROM `user_report` LEFT JOIN `user` ON
`user_report`.`user_id` = `user`.`user_id` WHERE `user`.`userBlocked` = 0 GROUP BY
`user_id` ORDER BY `reports` DESC, `user_report`.`timestamp` ASC");
PDO prepared:
$sql = $pdo->prepare("SELECT `user_report`.* FROM `user_report` LEFT JOIN `user` ON
`user_report`.`user_id` = `user`.`user_id` WHERE `user`.`userBlocked` = 0 GROUP BY
`user_id` ORDER BY `reports` DESC, `user_report`.`timestamp` ASC");
$sql->execute();
PDO doesn't work with GROUP BY user_id.
Reason I need it is if two results come with the same user_id I want to show it as one.
How is it possible that PDO doesn't allow GROUP BY function ... in MySQL statement is there any substitute to that?
Thank you.

Answer 1

Try this
$sql = $pdo->prepare("SELECT user_report.* FROM `user_report` LEFT JOIN `user` ON
user_report.user_id = user.user_id WHERE user.userBlocked = 0 GROUP BY
user.user_id DESC, user_report.timestamp ASC");
$sql->execute();
changes i did `` removing on selecting tables and
GROUP BY is pointing to which can be (user.user_id or user_report.user_id) you need to confirm?
AND ORDER BY (reports) is pointing to ? so i removed ?
You try the above sql, and provide your output if there is any error.