function db_add_index

7.x db_add_index($table, $name, $fields)
6.x db_add_index(&$ret, $table, $name, $fields)
6.x db_add_index(&$ret, $table, $name, $fields)

Adds an index.


$table: The table to be altered.

$name: The name of the index.

$fields: An array of field names.

Related topics

30 calls to db_add_index()
aggregator_update_7002 in drupal-7.x/modules/aggregator/aggregator.install
Add queued timestamp.
aggregator_update_7003 in drupal-7.x/modules/aggregator/aggregator.install
Increase the length of {aggregator_feed}.url.
comment_update_7002 in drupal-7.x/modules/comment/comment.install
Rename {comments} table to {comment} and upgrade it.
comment_update_7003 in drupal-7.x/modules/comment/comment.install
Split {comment}.timestamp into 'created' and 'changed', improve indexing on {comment}.
comment_update_7004 in drupal-7.x/modules/comment/comment.install
Upgrade the {node_comment_statistics} table.

... See full list


drupal-7.x/includes/database/, line 2941
Core systems for the database layer.


function db_add_index($table, $name, $fields) {
  return Database::getConnection()->schema()->addIndex($table, $name, $fields);