I am working on Drupal 6. while executing query when I add
and FROM_UNIXTIME(o.created,'%d-%m-%Y') < '".arg(3)."'";
to WHERE clause it doesn't return result. i have tried by using same query in MySQL Query Browser it returns result. so I am confused how to pass above condition in WHERE clause,
as I am passing 31-10-2012 in arg(3).

2 Answers 2


You just need to escape the percent sign with another, i.e.,


Also make sure you use parameter replacement rather than injecting strings directly into the query; you're not protected from SQL injection at the moment.

That would be something like

$sql = "SELECT * FROM {table} WHERE FROM_UNIXTIME(o.created,'%%d-%%m-%%Y') < '%s'";
$result = db_query($sql, arg(3));
  • i am using ($conditions .= " and FROM_UNIXTIME(o.created,'%%d-%%m-%%Y') >'".arg(2). "'" ;) and at end i append $conditions to my query. n hope it prevent SQL Injection.
    – Sanjay dev
    Oct 18, 2012 at 7:37
  • It won't prevent SQL injection unless you sanitise the argument, the method you're currently using means you're definitely susceptible to an injection attack
    – Clive
    Oct 18, 2012 at 11:48

In this question https://drupal.stackexchange.com/questions/149472/addexpression-and-from-unixtime-format, I asked the same question but in relation to Drupal 7 and the addExpression method of the SelectQuery object.

Problem Code:

$query->addExpression('FROM_UNIXTIME(w.submitted, "%Y-%m")', 'Date');

Solution (reverse the quotes):

$query->addExpression("FROM_UNIXTIME(w.submitted, '%Y-%m')", 'Date');

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