1996-08-28 03:59:28 +02:00
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/*-------------------------------------------------------------------------
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*
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1999-02-14 00:22:53 +01:00
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* nodeFuncs.h
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2008-08-26 00:42:34 +02:00
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* Various general-purpose manipulations of Node trees
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1996-08-28 03:59:28 +02:00
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*
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2008-01-01 20:46:01 +01:00
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* Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
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2000-01-26 06:58:53 +01:00
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* Portions Copyright (c) 1994, Regents of the University of California
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1996-08-28 03:59:28 +02:00
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*
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2008-08-26 00:42:34 +02:00
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* $PostgreSQL: pgsql/src/include/nodes/nodeFuncs.h,v 1.27 2008/08/25 22:42:34 tgl Exp $
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1996-08-28 03:59:28 +02:00
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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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2008-08-26 00:42:34 +02:00
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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_JOINALIASES 0x02 /* JOIN alias var lists */
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#define QTW_DONT_COPY_QUERY 0x04 /* do not copy top Query */
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extern Oid exprType(Node *expr);
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extern int32 exprTypmod(Node *expr);
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extern bool exprIsLengthCoercion(Node *expr, int32 *coercedTypmod);
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extern bool expression_returns_set(Node *clause);
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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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1997-11-25 23:07:18 +01:00
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2008-08-26 00:42:34 +02:00
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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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2001-10-28 07:26:15 +01:00
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2001-11-05 18:46:40 +01:00
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#endif /* NODEFUNCS_H */
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