db_add_index

db_add_index($table, $name, $fields, array $spec)

Adds an index.

Parameters

$table: The table to be altered.

$name: The name of the index.

array $fields: An array of field names.

array $spec: The table specification of the table to be altered, as taken from a schema definition. See \Drupal\Core\Database\Schema::addIndex() for how to obtain this specification.

See also

hook_schema()

Schema API

\Drupal\Core\Database\Schema::addIndex()

Related topics

Schema API

API to handle database schemas.

File

core/includes/database.inc, line 929

Core systems for the database layer.

Code

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