SelectQuery::innerJoin in core/includes/database/select.inc

Inner Join against another table in the database.

SelectQuery::join in core/includes/database/select.inc

Default Join against another table in the database.

SelectQuery::leftJoin in core/includes/database/select.inc

Left Outer Join against another table in the database.

SelectQuery::rightJoin in core/includes/database/select.inc

Right Outer Join against another table in the database.

SelectQuery::__construct in core/includes/database/select.inc

Constructs a Query object.