pquery.h

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/*-------------------------------------------------------------------------
 *
 * pquery.h
 *    prototypes for pquery.c.
 *
 *
 * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * src/include/tcop/pquery.h
 *
 *-------------------------------------------------------------------------
 */
#ifndef PQUERY_H
#define PQUERY_H
 
#include "nodes/parsenodes.h"
#include "utils/portal.h"
 
struct PlannedStmt;             /* avoid including plannodes.h here */
 
 
extern PGDLLIMPORT Portal ActivePortal;
 
 
extern PortalStrategy ChoosePortalStrategy(List *stmts);
 
extern List *FetchPortalTargetList(Portal portal);
 
extern List *FetchStatementTargetList(Node *stmt);
 
extern void PortalStart(Portal portal, ParamListInfo params,
                        int eflags, Snapshot snapshot);
 
extern void PortalSetResultFormat(Portal portal, int nFormats,
                                  int16 *formats);
 
extern bool PortalRun(Portal portal, long count, bool isTopLevel,
                      bool run_once, DestReceiver *dest, DestReceiver *altdest,
                      QueryCompletion *qc);
 
extern uint64 PortalRunFetch(Portal portal,
                             FetchDirection fdirection,
                             long count,
                             DestReceiver *dest);
 
extern bool PlannedStmtRequiresSnapshot(struct PlannedStmt *pstmt);
 
extern void EnsurePortalSnapshotExists(void);
 
#endif                          /* PQUERY_H */