#ifndef PREP_H
#define PREP_H
#include "nodes/pathnodes.h"
#include "nodes/plannodes.h"
extern void transform_MERGE_to_join(Query *parse);
extern void replace_empty_jointree(Query *parse);
extern void pull_up_sublinks(PlannerInfo *root);
extern void preprocess_function_rtes(PlannerInfo *root);
extern Query *expand_virtual_generated_columns(PlannerInfo *root);
extern void pull_up_subqueries(PlannerInfo *root);
extern void flatten_simple_union_all(PlannerInfo *root);
extern void reduce_outer_joins(PlannerInfo *root);
extern void remove_useless_result_rtes(PlannerInfo *root);
extern Relids get_relids_in_jointree(Node *jtnode, bool include_outer_joins,
bool include_inner_joins);
extern Relids get_relids_for_join(Query *query, int joinrelid);
extern void preprocess_targetlist(PlannerInfo *root);
extern List *extract_update_targetlist_colnos(List *tlist);
extern PlanRowMark *get_plan_rowmark(List *rowmarks, Index rtindex);
extern void get_agg_clause_costs(PlannerInfo *root, AggSplit aggsplit,
AggClauseCosts *costs);
extern void preprocess_aggrefs(PlannerInfo *root, Node *clause);
extern RelOptInfo *plan_set_operations(PlannerInfo *root);
#endif