58 lines
2.2 KiB
C
58 lines
2.2 KiB
C
/*-------------------------------------------------------------------------
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*
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* tlist.h
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* prototypes for tlist.c.
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*
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*
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* Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* src/include/optimizer/tlist.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef TLIST_H
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#define TLIST_H
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#include "nodes/pathnodes.h"
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extern TargetEntry *tlist_member(Expr *node, List *targetlist);
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extern TargetEntry *tlist_member_ignore_relabel(Expr *node, List *targetlist);
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extern List *add_to_flat_tlist(List *tlist, List *exprs);
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extern List *get_tlist_exprs(List *tlist, bool includeJunk);
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extern bool tlist_same_exprs(List *tlist1, List *tlist2);
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extern bool tlist_same_datatypes(List *tlist, List *colTypes, bool junkOK);
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extern bool tlist_same_collations(List *tlist, List *colCollations, bool junkOK);
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extern void apply_tlist_labeling(List *dest_tlist, List *src_tlist);
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extern Oid *extract_grouping_ops(List *groupClause);
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extern Oid *extract_grouping_collations(List *groupClause, List *tlist);
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extern AttrNumber *extract_grouping_cols(List *groupClause, List *tlist);
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extern bool grouping_is_sortable(List *groupClause);
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extern bool grouping_is_hashable(List *groupClause);
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extern PathTarget *make_pathtarget_from_tlist(List *tlist);
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extern List *make_tlist_from_pathtarget(PathTarget *target);
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extern PathTarget *copy_pathtarget(PathTarget *src);
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extern PathTarget *create_empty_pathtarget(void);
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extern void add_column_to_pathtarget(PathTarget *target,
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Expr *expr, Index sortgroupref);
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extern void add_new_column_to_pathtarget(PathTarget *target, Expr *expr);
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extern void add_new_columns_to_pathtarget(PathTarget *target, List *exprs);
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extern void apply_pathtarget_labeling_to_tlist(List *tlist, PathTarget *target);
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extern void split_pathtarget_at_srfs(PlannerInfo *root,
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PathTarget *target, PathTarget *input_target,
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List **targets, List **targets_contain_srfs);
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/* Convenience macro to get a PathTarget with valid cost/width fields */
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#define create_pathtarget(root, tlist) \
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set_pathtarget_cost_width(root, make_pathtarget_from_tlist(tlist))
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#endif /* TLIST_H */
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