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
20extern TargetEntry *tlist_member(Expr *node, List *targetlist);
21extern TargetEntry *tlist_member_ignore_relabel(Expr *node, List *targetlist);
22
23extern List *add_to_flat_tlist(List *tlist, List *exprs);
24
25extern List *get_tlist_exprs(List *tlist, bool includeJunk);
26
27extern bool tlist_same_exprs(List *tlist1, List *tlist2);
28
29extern bool tlist_same_datatypes(List *tlist, List *colTypes, bool junkOK);
30extern bool tlist_same_collations(List *tlist, List *colCollations, bool junkOK);
31
32extern void apply_tlist_labeling(List *dest_tlist, List *src_tlist);
33
34extern Oid *extract_grouping_ops(List *groupClause);
35extern Oid *extract_grouping_collations(List *groupClause, List *tlist);
36extern AttrNumber *extract_grouping_cols(List *groupClause, List *tlist);
37extern bool grouping_is_sortable(List *groupClause);
38extern bool grouping_is_hashable(List *groupClause);
39
40extern PathTarget *make_pathtarget_from_tlist(List *tlist);
41extern List *make_tlist_from_pathtarget(PathTarget *target);
42extern PathTarget *copy_pathtarget(PathTarget *src);
43extern PathTarget *create_empty_pathtarget(void);
44extern void add_column_to_pathtarget(PathTarget *target,
45 Expr *expr, Index sortgroupref);
46extern void add_new_column_to_pathtarget(PathTarget *target, Expr *expr);
47extern void add_new_columns_to_pathtarget(PathTarget *target, List *exprs);
48extern void apply_pathtarget_labeling_to_tlist(List *tlist, PathTarget *target);
49extern 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