*
* prep.h
* prototypes for files in optimizer/prep/
*
*
* Portions Copyright (c) 2021, openGauss Contributors
* Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/optimizer/prep.h
*
* -------------------------------------------------------------------------
*/
#ifndef PREP_H
#define PREP_H
#include "nodes/plannodes.h"
#include "nodes/parsenodes.h"
#include "nodes/relation.h"
#include "utils/guc.h"
#include "catalog/pg_operator.h"
#include "optimizer/clauses.h"
typedef enum UNIONALL_SHIPPING_TYPE
{
SHIPPING_NONE,
SHIPPING_PARTIAL,
SHIPPING_ALL
}UNIONALL_SHIPPING_TYPE;
* find_dependent_phvs - are there any PlaceHolderVars whose relids are
* exactly the given varno?
*/
typedef struct
{
Relids relids;
int sublevels_up;
} find_dependent_phvs_context;
* prototypes for prepjointree.c
*/
extern void replace_empty_jointree(Query *parse);
extern Node *remove_useless_results_recurse(PlannerInfo *root, Node *jtnode);
extern int get_result_relid(PlannerInfo *root, Node *jtnode);
extern void remove_result_refs(PlannerInfo *root, int varno, Node *newjtloc);
extern bool find_dependent_phvs(Node *node, int varno);
extern bool find_dependent_phvs_walker(Node *node, find_dependent_phvs_context *context);
extern void pull_up_sublinks(PlannerInfo* root);
extern void inline_set_returning_functions(PlannerInfo* root);
extern Node* pull_up_subqueries(PlannerInfo* root, Node* jtnode);
extern void flatten_simple_union_all(PlannerInfo* root);
extern void removeNotNullTest(PlannerInfo* root);
extern void reduce_outer_joins(PlannerInfo* root);
extern void remove_useless_result_rtes(PlannerInfo *root);
extern void reduce_inequality_fulljoins(PlannerInfo* root);
extern Relids get_relids_in_jointree(Node* jtnode, bool include_joins);
extern Relids get_relids_for_join(PlannerInfo* root, int joinrelid);
extern void pull_up_subquery_hint(PlannerInfo* root, Query* parse, HintState* hint_state);
extern Node *remove_useless_results_recurse(PlannerInfo *root, Node *jtnode);
#ifndef ENABLE_MULTIPLE_NODES
extern void preprocess_rownum(PlannerInfo *root, Query *parse);
#endif
* prototypes for prepnonjointree.cpp
*/
extern bool get_real_rte_varno_attno(
Query* parse, Index* varno, AttrNumber* varattno, const Index targetVarno = InvalidOid);
extern bool is_join_inner_side(
const Node* fromNode, const Index targetRTEIndex, const bool isParentInnerSide, bool* isFound);
extern Query* lazyagg_main(Query* parse);
extern void reduce_orderby(Query* query, bool reduce);
extern Node* get_real_rte_varno_attno_or_node(Query* parse, Index* varno, AttrNumber* varattno);
* prototypes for prepqual.c
*/
extern Node* negate_clause(Node* node);
extern Expr* canonicalize_qual(Expr* qual, bool is_check);
extern List *pull_ands(List *and_exprs);
extern List* pull_ors(List* orlist);
* prototypes for preptlist.c
*/
extern List* preprocess_targetlist(PlannerInfo* root, List* tlist);
extern List* preprocess_upsert_targetlist(List* tlist, int result_relation, List* range_table);
extern PlanRowMark* get_plan_rowmark(List* rowmarks, Index rtindex);
* prototypes for prepunion.c
*/
extern Plan* plan_set_operations(PlannerInfo* root, double tuple_fraction, List** sortClauses);
extern void expand_inherited_tables(PlannerInfo* root);
extern void make_inh_translation_list(
Relation oldrelation, Relation newrelation, Index newvarno, List** translated_vars);
extern Bitmapset* translate_col_privs(const Bitmapset* parent_privs, List* translated_vars);
extern Node* adjust_appendrel_attrs(PlannerInfo* root, Node* node, AppendRelInfo* appinfo);
extern Node* adjust_appendrel_attrs_multilevel(
PlannerInfo *root, Node *node, Relids child_relids, Relids top_parent_relids);
extern AppendRelInfo **find_appinfos_by_relids(PlannerInfo *root, Relids relids, int *nappinfos);
extern void mark_parent_child_pushdown_flag(Query *parent, Query *child);
extern bool check_base_rel_in_fromlist(Query *parse, Node *jtnode);
extern UNIONALL_SHIPPING_TYPE precheck_shipping_union_all(Query *subquery, Node *setOp);
extern bool ContainRownumQual(const Query *parse);
#endif
