选择/投影物理算子更多...

类 ProjectPhysicalOperator 继承关系图:

Public 成员函数
void	add_expressions (std::vector< std::unique_ptr< Expression > > &&expressions)

void	add_projection (const Table table, const FieldMeta field)

PhysicalOperatorType	type () const override

RC	open (Trx *trx) override

RC	next () override

RC	close () override

int	cell_num () const

Tuple *	current_tuple () override

Public 成员函数继承自 PhysicalOperator
virtual std::string	name () const

virtual std::string	param () const

virtual PhysicalOperatorType	type () const =0

virtual RC	open (Trx *trx)=0

virtual RC	next ()=0

virtual RC	close ()=0

virtual Tuple *	current_tuple ()=0

void	add_child (std::unique_ptr< PhysicalOperator > oper)

std::vector< std::unique_ptr< PhysicalOperator > > &	children ()