src/include/rewrite/rewriteManip.h

   1 /*-------------------------------------------------------------------------
   2  *
   3  * rewriteManip.h
   4  *              Querytree manipulation subroutines for query rewriter.
   5  *
   6  *
   7  * Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
   8  * Portions Copyright (c) 1994, Regents of the University of California
   9  *
  10  * $PostgreSQL$
  11  *
  12  *-------------------------------------------------------------------------
  13  */
  14 #ifndef REWRITEMANIP_H
  15 #define REWRITEMANIP_H
  16
  17 #include "nodes/parsenodes.h"
  18
  19
  20 extern void OffsetVarNodes(Node *node, int offset, int sublevels_up);
  21 extern void ChangeVarNodes(Node *node, int old_varno, int new_varno,
  22                            int sublevels_up);
  23 extern void IncrementVarSublevelsUp(Node *node, int delta_sublevels_up,
  24                                                 int min_sublevels_up);
  25 extern void IncrementVarSublevelsUp_rtable(List *rtable,
  26                                                            int delta_sublevels_up, int min_sublevels_up);
  27
  28 extern bool rangeTableEntry_used(Node *node, int rt_index,
  29                                          int sublevels_up);
  30 extern bool attribute_used(Node *node, int rt_index, int attno,
  31                            int sublevels_up);
  32
  33 extern Query *getInsertSelectQuery(Query *parsetree, Query ***subquery_ptr);
  34
  35 extern void AddQual(Query *parsetree, Node *qual);
  36 extern void AddInvertedQual(Query *parsetree, Node *qual);
  37
  38 extern bool contain_aggs_of_level(Node *node, int levelsup);
  39 extern int      locate_agg_of_level(Node *node, int levelsup);
  40 extern int      locate_windowfunc(Node *node);
  41 extern bool checkExprHasAggs(Node *node);
  42 extern bool checkExprHasWindowFuncs(Node *node);
  43 extern bool checkExprHasSubLink(Node *node);
  44
  45 extern Node *ResolveNew(Node *node, int target_varno, int sublevels_up,
  46                    RangeTblEntry *target_rte,
  47                    List *targetlist, int event, int update_varno);
  48
  49 #endif   /* REWRITEMANIP_H */