granicus.if.org Git - postgresql/blob - src/include/optimizer/subselect.h

   1 /*-------------------------------------------------------------------------
   2  *
   3  * subselect.h
   4  *
   5  * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
   6  * Portions Copyright (c) 1994, Regents of the University of California
   7  *
   8  * $PostgreSQL: pgsql/src/include/optimizer/subselect.h,v 1.24 2005/04/11 23:06:56 tgl Exp $
   9  *
  10  *-------------------------------------------------------------------------
  11  */
  12 #ifndef SUBSELECT_H
  13 #define SUBSELECT_H
  14
  15 #include "nodes/parsenodes.h"
  16 #include "nodes/plannodes.h"
  17
  18 extern Index PlannerQueryLevel; /* level of current query */
  19 extern List *PlannerInitPlan;   /* init subplans for current query */
  20 extern List *PlannerParamList;  /* to keep track of cross-level Params */
  21 extern int      PlannerPlanId;          /* to assign unique ID to subquery plans */
  22
  23 extern Node *convert_IN_to_join(Query *parse, SubLink *sublink);
  24 extern Node *SS_replace_correlation_vars(Node *expr);
  25 extern Node *SS_process_sublinks(Node *expr, bool isQual);
  26 extern void SS_finalize_plan(Plan *plan, List *rtable);
  27 extern Param *SS_make_initplan_from_plan(Query *root, Plan *plan,
  28                                                                                  Oid resulttype, int32 resulttypmod);
  29
  30 #endif   /* SUBSELECT_H */