mysql query on javascript gets ER_PARSE_ERROR but it worked in phpmyadmin

Question

var query =
            'SELECT '
            + prefix + 'threads.tid as _tid, '
            + prefix + 'threads.fid as _cid, '
            + prefix + 'threads.firstpost as _pid, '
            + prefix + 'threads.views as _viewcount, '
            + prefix + 'threads.subject as _title, '
            + prefix + 'threads.dateline as _timestamp, '
            + prefix + 'threads.sticky as _pinned, '
            + prefix + 'posts.uid as _uid, '
            + prefix + 'posts.tid as _post_tid, '
            + prefix + 'posts.message as _content, '

            + 'IF(filetype like "image%", CONCAT("/uploads/files/MyBBAttachment/", attachname), NULL) as _images, '
            + 'IF(filetype like "image%", GROUP_CONCAT(filename SEPARATOR ","), NULL) as _imgnames, '
            + 'IF(filetype not like "image%", CONCAT("/uploads/files/MyBBAttachment/", attachname), NULL) as _attachments, '
            + 'IF(filetype not like "image%", GROUP_CONCAT(filename SEPARATOR ","), NULL) as _attachnames '

            + 'FROM ' + prefix + 'posts LEFT JOIN ' + prefix + 'attachments ON (' + prefix + 'posts.pid = ' + prefix + 'attachments.pid), ' + prefix + 'threads '
            + 'WHERE ' + prefix + 'threads.firstpost=' + prefix + 'posts.pid '
            + 'GROUP BY ' + prefix + 'posts.pid'
            + (start >= 0 && limit >= 0 ? 'LIMIT ' + start + ',' + limit : '');

Above query doesn't work in Node.js, I get following error:

{ Error: ER_PARSE_ERROR: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '0,600000' at line 1

But when I run similar thing in PHPMyAdmin, it works:

SELECT mybb_threads.tid as _tid, mybb_threads.fid as _cid, mybb_threads.firstpost as _pid, mybb_threads.views as _viewcount, mybb_threads.subject as _title, mybb_threads.dateline as _timestamp, mybb_threads.sticky as _pinned, mybb_posts.uid as _uid, mybb_posts.tid as _post_tid, mybb_posts.message as _content
FROM mybb_posts LEFT JOIN mybb_attachments ON mybb_posts.pid = mybb_attachments.pid, mybb_threads
where mybb_threads.firstpost=mybb_posts.pid
group by mybb_posts.pid
LIMIT 0, 100

How do I make var query work?

Mureinik · Accepted Answer · 2020-11-25 21:04:35Z

1

You're missing a whitespace before the limit keyword:

+ (start >= 0 && limit >= 0 ? ' LIMIT ' + start + ',' + limit : '');
// Here -----------------------^

answered Nov 25, 2020 at 21:04

Mureinik

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