db_query_range
includes/database.pgsql.inc, line 241
- Versions
- 4.6 – 6
db_query_range($query)- 7
db_query_range($query, $args, $from = 0, $count = 0, $options = array())
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.
NOTE: using this syntax will cast NULL and FALSE values to decimal 0, and TRUE values to decimal 1.
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 %%.
$from The first result row to return.
$count The maximum number of result rows to return.
Return value
A database query result resource, or FALSE if the query was not executed correctly.
Related topics
Code
<?php
function db_query_range($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);
}
?>