The Select query object we are extending/decorating. Type:

protected Schema::createPrimaryKeySql($fields)

Flag to indicate a query call should return the number of affected rows. File core/lib/Drupal/Core/Database/Database

public Delete::__construct(Connection $connection, $table, array $options =

public Merge::__construct(Connection $connection, $table, array $options = array())

protected Tasks::connect() Check

public Query::__construct(Connection $connection, $options)

public Insert::execute() Executes

public Statement::rowCount() Returns

Specifies installation tasks for MySQL and equivalent databases. Hierarchy class