I try to build new module in drupal 7 I try to insert some data in some where inside the code it was working in many functions but suddenly when I try to do the following

      'payment_item' => $data['payment_item'],
      'change' => $data['change'],
      'via' => $data['via'],
      'userlist' => serialize($userlisthidden),
      'startdate' => strtotime($data['startdate']),
      'enddate' => strtotime($data['enddate']),  
      'hash' => $hash   

it gives me an error

SQLSTATE[42000]: Syntax error or access violation: 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 'change, via, userlist, startdate, enddate, hash) VALUES ('2', '1', '1', 'a:1:{i:' at line 1

I checked the table and the fields and the values every thing are correct

so I decide to insert static data like the following :

      'payment_item' => 'qq',
      'change' => 'qq',
      'via' => 'qq',
      'userlist' => 'qq',
      'startdate' => 'qq',
      'enddate' => 'qq',  
      'hash' => 'qq'   

But it gives me the same error so, what i miss here, please help me

2 Answers 2


CHANGE is a reserved word in MySQL. PDO doesn't have a built-in function for quoting identifiers (just string literals and dates), so presumably Drupal simply hasn't tried to implement this on PDO's behalf.

Using a different column name would be the simplest solution.


Reserved Word are permitted as identifiers if you quote them.

For example:

instead of using keyword interval like this:

CREATE TABLE interval (begin INT, end INT);

You could try

CREATE TABLE `interval` (begin INT, end INT);
  • 2
    That's certainly true, but the docs do explicitly state only to use db_insert() for insert queries (not db_query()). So yes, it can be done, but you might find it breaks portability to another DBMS. Obviously this may or may not be a problem depending on requirements, but it might not be suitable for, e.g., a contrib module
    – Clive
    Commented Dec 29, 2014 at 13:08

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