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/*------------------------------------------------------------------------- * * tlist.h * prototypes for tlist.c. * * * Portions Copyright (c) 1996-2016, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * * src/include/optimizer/tlist.h * *------------------------------------------------------------------------- */ #ifndef TLIST_H #define TLIST_H #include "nodes/relation.h" extern TargetEntry *tlist_member(Node *node, List *targetlist); extern TargetEntry *tlist_member_ignore_relabel(Node *node, List *targetlist); extern List *add_to_flat_tlist(List *tlist, List *exprs); extern List *get_tlist_exprs(List *tlist, bool includeJunk); extern int count_nonjunk_tlist_entries(List *tlist); extern bool tlist_same_exprs(List *tlist1, List *tlist2); extern bool tlist_same_datatypes(List *tlist, List *colTypes, bool junkOK); extern bool tlist_same_collations(List *tlist, List *colCollations, bool junkOK); extern void apply_tlist_labeling(List *dest_tlist, List *src_tlist); extern TargetEntry *get_sortgroupref_tle(Index sortref, List *targetList); extern TargetEntry *get_sortgroupclause_tle(SortGroupClause *sgClause, List *targetList); extern Node *get_sortgroupclause_expr(SortGroupClause *sgClause, List *targetList); extern List *get_sortgrouplist_exprs(List *sgClauses, List *targetList); extern SortGroupClause *get_sortgroupref_clause(Index sortref, List *clauses); extern SortGroupClause *get_sortgroupref_clause_noerr(Index sortref, List *clauses); extern Oid *extract_grouping_ops(List *groupClause); extern AttrNumber *extract_grouping_cols(List *groupClause, List *tlist); extern bool grouping_is_sortable(List *groupClause); extern bool grouping_is_hashable(List *groupClause); extern PathTarget *make_pathtarget_from_tlist(List *tlist); extern List *make_tlist_from_pathtarget(PathTarget *target); extern PathTarget *copy_pathtarget(PathTarget *src); extern PathTarget *create_empty_pathtarget(void); extern void add_column_to_pathtarget(PathTarget *target, Expr *expr, Index sortgroupref); extern void add_new_column_to_pathtarget(PathTarget *target, Expr *expr); extern void add_new_columns_to_pathtarget(PathTarget *target, List *exprs); extern void apply_pathtarget_labeling_to_tlist(List *tlist, PathTarget *target); /* Convenience macro to get a PathTarget with valid cost/width fields */ #define create_pathtarget(root, tlist) \ set_pathtarget_cost_width(root, make_pathtarget_from_tlist(tlist)) #endif /* TLIST_H */