hook_query_alter

Perform alterations to a structured query.

Structured (aka dynamic) queries that have tags associated may be altered by any module before the query is executed.

Parameters

$query: A Query object describing the composite parts of a SQL query.

See also

hook_query_TAG_alter()

node_query_node_access_alter()

AlterableInterface

SelectInterface

Related topics

Hooks

Allow modules to interact with the Drupal core.

3 functions implement hook_query_alter()

File

core/modules/system/system.api.php, line 2820

Hooks provided by Drupal core and the System module.

Code

function hook_query_alter(Drupal Database Query AlterableInterface $query) {
  if ($query->hasTag('micro_limit')) {
    $query->range(0, 2);
  }
}