OptimizerContext类 参考

#include <optimizer_context.h>

Public 成员函数
Memo &	get_memo ()
RuleSet &	get_rule_set ()
void	push_task (CascadeTask *task)
CostModel *	get_cost_model ()
void	set_task_pool (PendingTasks *pending_tasks)
void	record_operator_node_in_memo (unique_ptr< OperatorNode > &&node)
GroupExpr *	make_group_expression (OperatorNode *node)
bool	record_node_into_group (OperatorNode *node, GroupExpr **gexpr)
bool	record_node_into_group (OperatorNode *node, GroupExpr **gexpr, int target_group)
double	get_cost_upper_bound () const

Private 属性
Memo *	memo_
RuleSet *	rule_set_
CostModel	cost_model_
PendingTasks *	task_pool_
double	cost_upper_bound_

详细描述

OptimizerContext is a class containing pointers to various objects that are required during the entire query optimization process.

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该类的文档由以下文件生成:

• src/observer/sql/optimizer/cascade/optimizer_context.h
• src/observer/sql/optimizer/cascade/optimizer_context.cpp