Channy's blog
//Description:
//Create Date: 2020-01-18 23:18:52
//Author: channy
004_postgres_plan
postgres plan
计划树
pg_plan_queries (querytree_list -> plantree_list)
pg_plan_query (rewrite->plan)
planner
standard_planner
subquery_planner
pull_up_sublinks
pull_up_subqueries (merge subqueries to main query)
pull_up_subqueries_recurse
preprocess_expression
grouping_planner
CreatePortal
PortalDefineQuery
PortalStart
PortalRun (pquery.c)
PortalRunSelect/PortalRunMulti (select/create)
ExecutorRun/PortalRunUtility
standard_ExecutorRun/ProcessUtility.standard_ProcessUtility
ExecutePlan/ProcessUtilitySlow (execMain.c)
ExecProcNode (executor.h)
ExecProcNodeFirst (execProcnode.c)
ExecModifyTable (nodeModifyTable.c)
