createIndex

\Bitrix\Main\DB\Result public
\Bitrix\Main\DB\Connection::createIndex(
 string $tableName,
 string $indexName,
 string|array $columnNames
);

This non-static method creates a column index.

Parameter	Description	Version
$tableName	Table name.
$indexName	New index name.
$columnNames	Name of column or array of column names to be included into the index.