Help with SQL error, please.

[chrisj]

SQL Error : 1064 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 'AND user_id =' at line 4

SELECT topic_id FROM phpbb_topics_watch WHERE topic_id = AND user_id =

Line : 1070
File : functions_post.php"

In functions_post.php Line 1070 is:
Code:
message_die(GENERAL_ERROR, 'Could not obtain topic watch information', '', LINE, FILE, $sql);
}

Cam someone suggest a remedy? Thanks.

[mrhappiness]

why don't you tell mysql which values topic_id and user_id should have?

[ot]
why don't you see that you did not specify any values?
[/ot]