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6db0d7f359
query_tree_walker and query_tree_mutator were skipping the
windowClause of the query, without regard for the fact that the
startOffset and endOffset in a WindowClause node are expression trees
that need to be processed. This was an oversight in commit ec4be2ee6
from 2010 which added the expression fields; the main symptom is that
function parameters in window frame clauses don't work in inlined
functions.
Fix (as conservatively as possible since this needs to not break
existing out-of-tree callers) and add tests.
Backpatch all the way, since this has been broken since 9.0.
Per report from Alastair McKinley; fix by me with kibitzing and review
from Tom Lane.
Discussion: https://postgr.es/m/DB6PR0202MB2904E7FDDA9D81504D1E8C68E3800@DB6PR0202MB2904.eurprd02.prod.outlook.com
81 lines
3.1 KiB
C
81 lines
3.1 KiB
C
/*-------------------------------------------------------------------------
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*
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* nodeFuncs.h
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* Various general-purpose manipulations of Node trees
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*
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* Portions Copyright (c) 1996-2016, 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/nodes/nodeFuncs.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef NODEFUNCS_H
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#define NODEFUNCS_H
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#include "nodes/parsenodes.h"
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/* flags bits for query_tree_walker and query_tree_mutator */
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#define QTW_IGNORE_RT_SUBQUERIES 0x01 /* subqueries in rtable */
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#define QTW_IGNORE_CTE_SUBQUERIES 0x02 /* subqueries in cteList */
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#define QTW_IGNORE_RC_SUBQUERIES 0x03 /* both of above */
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#define QTW_IGNORE_JOINALIASES 0x04 /* JOIN alias var lists */
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#define QTW_IGNORE_RANGE_TABLE 0x08 /* skip rangetable entirely */
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#define QTW_EXAMINE_RTES 0x10 /* examine RTEs */
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#define QTW_DONT_COPY_QUERY 0x20 /* do not copy top Query */
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#define QTW_EXAMINE_SORTGROUP 0x80 /* include SortGroupNode lists */
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/* callback function for check_functions_in_node */
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typedef bool (*check_function_callback) (Oid func_id, void *context);
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extern Oid exprType(const Node *expr);
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extern int32 exprTypmod(const Node *expr);
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extern bool exprIsLengthCoercion(const Node *expr, int32 *coercedTypmod);
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extern Node *relabel_to_typmod(Node *expr, int32 typmod);
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extern Node *strip_implicit_coercions(Node *node);
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extern bool expression_returns_set(Node *clause);
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extern Oid exprCollation(const Node *expr);
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extern Oid exprInputCollation(const Node *expr);
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extern void exprSetCollation(Node *expr, Oid collation);
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extern void exprSetInputCollation(Node *expr, Oid inputcollation);
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extern int exprLocation(const Node *expr);
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extern void fix_opfuncids(Node *node);
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extern void set_opfuncid(OpExpr *opexpr);
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extern void set_sa_opfuncid(ScalarArrayOpExpr *opexpr);
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extern bool check_functions_in_node(Node *node, check_function_callback checker,
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void *context);
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extern bool expression_tree_walker(Node *node, bool (*walker) (),
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void *context);
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extern Node *expression_tree_mutator(Node *node, Node *(*mutator) (),
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void *context);
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extern bool query_tree_walker(Query *query, bool (*walker) (),
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void *context, int flags);
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extern Query *query_tree_mutator(Query *query, Node *(*mutator) (),
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void *context, int flags);
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extern bool range_table_walker(List *rtable, bool (*walker) (),
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void *context, int flags);
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extern List *range_table_mutator(List *rtable, Node *(*mutator) (),
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void *context, int flags);
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extern bool query_or_expression_tree_walker(Node *node, bool (*walker) (),
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void *context, int flags);
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extern Node *query_or_expression_tree_mutator(Node *node, Node *(*mutator) (),
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void *context, int flags);
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extern bool raw_expression_tree_walker(Node *node, bool (*walker) (),
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void *context);
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struct PlanState;
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extern bool planstate_tree_walker(struct PlanState *planstate, bool (*walker) (),
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void *context);
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#endif /* NODEFUNCS_H */
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