isIndexExists

boolean public
\Bitrix\Main\DB\MysqlCommonConnection::isIndexExists(
 string $tableName,
 array $columns
);

This non-static method checks if an index exists.

Actual columns in the index may differ from requested. You can use "prefix" of actual index columns in the $columns.

Parameter	Description	Version
$tableName	Name of table.
$columns	Array of columns in the index.