public Select::getArguments(PlaceholderInterface $queryPlaceholder = NULL)

public Connection::query($query, array $args = array(), $options = array())

Schema::addUniqueKey($table, $name, $fields)

Query extender class for tablesort queries. Hierarchy class \Drupal\Core\Database\Query\

public Schema::findTables($table_expression) Finds

public Schema::fieldExists($table, $column)

public Schema::dropUniqueKey($table, $name)

abstract public Schema::addField($table, $field, $spec, $keys_new = array())

public static Connection::sqlFunctionRegexp($pattern, $subject)

abstract public Connection::databaseType() Returns