没有 group by 表达式的 group by 物理算子 更多...
#include <scalar_group_by_physical_operator.h>
类 ScalarGroupByPhysicalOperator 继承关系图:
Public 成员函数 | |
| ScalarGroupByPhysicalOperator (vector< Expression * > &&expressions) | |
| PhysicalOperatorType | type () const override |
| OpType | get_op_type () const override |
| RC | open (Trx *trx) override |
| RC | next () override |
| RC | close () override |
| Tuple * | current_tuple () override |
 Public 成员函数 继承自 GroupByPhysicalOperator | |
| GroupByPhysicalOperator (vector< Expression * > &&expressions) | |
| Public 成员函数 继承自 PhysicalOperator | |
| virtual string | name () const |
| virtual string | param () const |
| bool | is_physical () const override |
| bool | is_logical () const override |
| virtual PhysicalOperatorType | type () const =0 |
| virtual RC | open (Trx *trx)=0 |
| virtual RC | next () |
| virtual RC | next (Chunk &chunk) |
| virtual RC | close ()=0 |
| virtual Tuple * | current_tuple () |
| virtual RC | tuple_schema (TupleSchema &schema) const |
| void | add_child (unique_ptr< PhysicalOperator > oper) |
| vector< unique_ptr< PhysicalOperator > > & | children () |
| Public 成员函数 继承自 OperatorNode | |
| virtual OpType | get_op_type () const |
| virtual bool | is_physical () const =0 |
| virtual bool | is_logical () const =0 |
| virtual uint64_t | hash () const |
| virtual bool | operator== (const OperatorNode &other) const |
| virtual unique_ptr< LogicalProperty > | find_log_prop (const vector< LogicalProperty * > &log_props) |
| Generate the logical property of the operator node using the input logical properties. 更多... | |
| virtual double | calculate_cost (LogicalProperty *prop, const vector< LogicalProperty * > &child_log_props, CostModel *cm) |
| Calculates the cost of a logical operation. 更多... | |
| void | add_general_child (OperatorNode *child) |
| vector< OperatorNode * > & | get_general_children () |
Private 属性 | |
| unique_ptr< GroupValueType > | group_value_ |
| bool | emitted_ = false |
额外继承的成员函数 | |
| Protected 类型 继承自 GroupByPhysicalOperator | |
| using | AggregatorList = vector< unique_ptr< Aggregator > > |
| using | GroupValueType = tuple< AggregatorList, CompositeTuple > |
| 聚合出来的一组数据 更多... | |
| Protected 成员函数 继承自 GroupByPhysicalOperator | |
| void | create_aggregator_list (AggregatorList &aggregator_list) |
| RC | aggregate (AggregatorList &aggregator_list, const Tuple &tuple) |
| 聚合一条记录 更多... | |
| RC | evaluate (GroupValueType &group_value) |
| 所有tuple聚合结束后，运算最终结果 | |
| Protected 属性 继承自 GroupByPhysicalOperator | |
| vector< Expression * > | aggregate_expressions_ |
| vector< Expression * > | value_expressions_ |
| 聚合表达式 | |
| Protected 属性 继承自 PhysicalOperator | |
| vector< unique_ptr< PhysicalOperator > > | children_ |
| Protected 属性 继承自 OperatorNode | |
| vector< OperatorNode * > | general_children_ |
详细描述
没有 group by 表达式的 group by 物理算子
成员函数说明
◆ close()
|
overridevirtual |
实现了 PhysicalOperator.
◆ current_tuple()
|
overridevirtual |
重载 PhysicalOperator .
◆ get_op_type()
|
inlineoverridevirtual |
TODO: add this function TODO: unify logical and physical OpType
重载 OperatorNode .
◆ next()
|
overridevirtual |
重载 PhysicalOperator .
◆ open()
|
overridevirtual |
实现了 PhysicalOperator.
◆ type()
|
inlineoverridevirtual |
实现了 PhysicalOperator.
该类的文档由以下文件生成:
- src/observer/sql/operator/scalar_group_by_physical_operator.h
- src/observer/sql/operator/scalar_group_by_physical_operator.cpp
