public Connection::supportsTransactionalDDL()

The fields to SELECT. Type:

public Connection::prefixTables($sql) Appends

public SelectInterface::fields($table_alias, array $fields

public Insert::execute() Executes the

public Merge::key($field, $value = NULL) Sets

public Statement::setFetchMode($mode, $a1 = NULL, $a2 = array())

public Select::addExpression($expression, $alias = NULL, $arguments = array())

hook_query_TAG_alter(Drupal\Core\Database\Query\AlterableInterface $query) Perform alterations to a structured

public Connection::createDatabase($database)