src/include/tcop/pquery.h

   1 /*-------------------------------------------------------------------------
   2  *
   3  * pquery.h
   4  *        prototypes for pquery.c.
   5  *
   6  *
   7  * Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
   8  * Portions Copyright (c) 1994, Regents of the University of California
   9  *
  10  * src/include/tcop/pquery.h
  11  *
  12  *-------------------------------------------------------------------------
  13  */
  14 #ifndef PQUERY_H
  15 #define PQUERY_H
  16
  17 #include "nodes/parsenodes.h"
  18 #include "utils/portal.h"
  19
  20 struct PlannedStmt;                             /* avoid including plannodes.h here */
  21
  22
  23 extern PGDLLIMPORT Portal ActivePortal;
  24
  25
  26 extern PortalStrategy ChoosePortalStrategy(List *stmts);
  27
  28 extern List *FetchPortalTargetList(Portal portal);
  29
  30 extern List *FetchStatementTargetList(Node *stmt);
  31
  32 extern void PortalStart(Portal portal, ParamListInfo params,
  33                                                 int eflags, Snapshot snapshot);
  34
  35 extern void PortalSetResultFormat(Portal portal, int nFormats,
  36                                                                   int16 *formats);
  37
  38 extern bool PortalRun(Portal portal, long count, bool isTopLevel,
  39                                           bool run_once, DestReceiver *dest, DestReceiver *altdest,
  40                                           QueryCompletion *qc);
  41
  42 extern uint64 PortalRunFetch(Portal portal,
  43                                                          FetchDirection fdirection,
  44                                                          long count,
  45                                                          DestReceiver *dest);
  46
  47 extern bool PlannedStmtRequiresSnapshot(struct PlannedStmt *pstmt);
  48
  49 extern void EnsurePortalSnapshotExists(void);
  50
  51 #endif                                                  /* PQUERY_H */