1 /*------------------------------------------------------------------------- 2 * 3 * tlist.h 4 * prototypes for tlist.c. 5 * 6 * 7 * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group 8 * Portions Copyright (c) 1994, Regents of the University of California 9 * 10 * src/include/optimizer/tlist.h 11 * 12 *------------------------------------------------------------------------- 13 */ 14 #ifndef TLIST_H 15 #define TLIST_H 16 17 #include "nodes/pathnodes.h" 18 19 20 extern TargetEntry *tlist_member(Expr *node, List *targetlist); 21 extern TargetEntry *tlist_member_ignore_relabel(Expr *node, List *targetlist); 22 23 extern List *add_to_flat_tlist(List *tlist, List *exprs); 24 25 extern List *get_tlist_exprs(List *tlist, bool includeJunk); 26 27 extern bool tlist_same_exprs(List *tlist1, List *tlist2); 28 29 extern bool tlist_same_datatypes(List *tlist, List *colTypes, bool junkOK); 30 extern bool tlist_same_collations(List *tlist, List *colCollations, bool junkOK); 31 32 extern void apply_tlist_labeling(List *dest_tlist, List *src_tlist); 33 34 extern Oid *extract_grouping_ops(List *groupClause); 35 extern Oid *extract_grouping_collations(List *groupClause, List *tlist); 36 extern AttrNumber *extract_grouping_cols(List *groupClause, List *tlist); 37 extern bool grouping_is_sortable(List *groupClause); 38 extern bool grouping_is_hashable(List *groupClause); 39 40 extern PathTarget *make_pathtarget_from_tlist(List *tlist); 41 extern List *make_tlist_from_pathtarget(PathTarget *target); 42 extern PathTarget *copy_pathtarget(PathTarget *src); 43 extern PathTarget *create_empty_pathtarget(void); 44 extern void add_column_to_pathtarget(PathTarget *target, 45 Expr *expr, Index sortgroupref); 46 extern void add_new_column_to_pathtarget(PathTarget *target, Expr *expr); 47 extern void add_new_columns_to_pathtarget(PathTarget *target, List *exprs); 48 extern void apply_pathtarget_labeling_to_tlist(List *tlist, PathTarget *target); 49 extern void split_pathtarget_at_srfs(PlannerInfo *root, 50 PathTarget *target, PathTarget *input_target, 51 List **targets, List **targets_contain_srfs); 52 53 /* Convenience macro to get a PathTarget with valid cost/width fields */ 54 #define create_pathtarget(root, tlist) \ 55 set_pathtarget_cost_width(root, make_pathtarget_from_tlist(tlist)) 56 57 #endif /* TLIST_H */ 58