db_query_range

Runs a limited-range query in the active database.

Use this as a substitute for db_query() when a subset of the query is to be returned. User-supplied arguments to the query should be passed in as separate parameters so that they can be properly escaped to avoid SQL injection attacks.

Parameters

$query: A string containing an SQL query.

...: A variable number of arguments which are substituted into the query using printf() syntax. Instead of a variable number of query arguments, you may also pass a single array containing the query arguments. Valid %-modifiers are: %s, %d, %f, %b (binary data, do not enclose in '') and %%.

NOTE: using this syntax will cast NULL and FALSE values to decimal 0, and TRUE values to decimal 1.

$from: The first result row to return.

$count: The maximum number of result rows to return.

Return value

A database query result resource, or FALSE if the query was not executed correctly.

Related topics

Database abstraction layer

Allow the use of different database servers using the same code base.

39 calls to db_query_range()

1 string reference to 'db_query_range'

File

includes/database.pgsql.inc, line 271

Database interface code for PostgreSQL database servers.

Code

function db_query_range($query) {
  $args = func_get_args();
  $count = array_pop($args);
  $from = array_pop($args);
  array_shift($args);

  $query = db_prefix_tables($query);
  if (isset($args[0]) and is_array($args[0])) { // 'All arguments in one array' syntax
    $args = $args[0];
  }
  _db_query_callback($args, TRUE);
  $query = preg_replace_callback(DB_QUERY_REGEXP, '_db_query_callback', $query);
  $query .= ' LIMIT ' . (int) $count . ' OFFSET ' . (int) $from;
  return _db_query($query);
}