public function convertIndexDescription(Table $table, $row)
{
$sql = sprintf('PRAGMA index_info(%s)', $this->_driver->quoteIdentifier($row['name']));
$statement = $this->_driver->prepare($sql);
$statement->execute();
$columns = [];
foreach ($statement->fetchAll('assoc') as $column) {
$columns[] = $column['name'];
}
$statement->closeCursor();
if ($row['unique']) {
$table->addConstraint($row['name'], ['type' => Table::CONSTRAINT_UNIQUE, 'columns' => $columns]);
} else {
$table->addIndex($row['name'], ['type' => Table::INDEX_INDEX, 'columns' => $columns]);
}
}