/*-------------------------------------------------------------------------
*
* executor . h
* support for the POSTGRES executor module
*
*
* Portions Copyright ( c ) 1996 - 2025 , PostgreSQL Global Development Group
* Portions Copyright ( c ) 1994 , Regents of the University of California
*
* src / include / executor / executor . h
*
* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
*/
#ifndef EXECUTOR_H
#define EXECUTOR_H
#include "executor/execdesc.h"
#include "fmgr.h"
#include "nodes/lockoptions.h"
#include "nodes/parsenodes.h"
#include "utils/memutils.h"
/*
* The " eflags " argument to ExecutorStart and the various ExecInitNode
* routines is a bitwise OR of the following flag bits , which tell the
* called plan node what to expect . Note that the flags will get modified
* as they are passed down the plan tree , since an upper node may require
* functionality in its subnode not demanded of the plan as a whole
* ( example : MergeJoin requires mark / restore capability in its inner input ) ,
* or an upper node may shield its input from some functionality requirement
* ( example : Materialize shields its input from needing to do backward scan ) .
*
* EXPLAIN_ONLY indicates that the plan tree is being initialized just so
* EXPLAIN can print it out ; it will not be run . Hence , no side - effects
* of startup should occur . However , error checks ( such as permission checks )
* should be performed .
*
* EXPLAIN_GENERIC can only be used together with EXPLAIN_ONLY . It indicates
* that a generic plan is being shown using EXPLAIN ( GENERIC_PLAN ) , which
* means that missing parameter values must be tolerated . Currently , the only
* effect is to suppress execution - time partition pruning .
*
* REWIND indicates that the plan node should try to efficiently support
* rescans without parameter changes . ( Nodes must support ExecReScan calls
* in any case , but if this flag was not given , they are at liberty to do it
* through complete recalculation . Note that a parameter change forces a
* full recalculation in any case . )
*
* BACKWARD indicates that the plan node must respect the es_direction flag .
* When this is not passed , the plan node will only be run forwards .
*
* MARK indicates that the plan node must support Mark / Restore calls .
* When this is not passed , no Mark / Restore will occur .
*
* SKIP_TRIGGERS tells ExecutorStart / ExecutorFinish to skip calling
* AfterTriggerBeginQuery / AfterTriggerEndQuery . This does not necessarily
* mean that the plan can ' t queue any AFTER triggers ; just that the caller
* is responsible for there being a trigger context for them to be queued in .
*
* WITH_NO_DATA indicates that we are performing REFRESH MATERIALIZED VIEW
* . . . WITH NO DATA . Currently , the only effect is to suppress errors about
* scanning unpopulated materialized views .
*/
#define EXEC_FLAG_EXPLAIN_ONLY 0 x0001 /* EXPLAIN, no ANALYZE */
#define EXEC_FLAG_EXPLAIN_GENERIC 0 x0002 /* EXPLAIN (GENERIC_PLAN) */
#define EXEC_FLAG_REWIND 0 x0004 /* need efficient rescan */
#define EXEC_FLAG_BACKWARD 0 x0008 /* need backward scan */
#define EXEC_FLAG_MARK 0 x0010 /* need mark/restore */
#define EXEC_FLAG_SKIP_TRIGGERS 0 x0020 /* skip AfterTrigger setup */
#define EXEC_FLAG_WITH_NO_DATA 0 x0040 /* REFRESH ... WITH NO DATA */
/* Hook for plugins to get control in ExecutorStart() */
typedef void (*ExecutorStart_hook_type) (QueryDesc *queryDesc, int eflags);
extern PGDLLIMPORT ExecutorStart_hook_type ExecutorStart_hook;
/* Hook for plugins to get control in ExecutorRun() */
typedef void (*ExecutorRun_hook_type) (QueryDesc *queryDesc,
ScanDirection direction,
uint64 count);
extern PGDLLIMPORT ExecutorRun_hook_type ExecutorRun_hook;
/* Hook for plugins to get control in ExecutorFinish() */
typedef void (*ExecutorFinish_hook_type) (QueryDesc *queryDesc);
extern PGDLLIMPORT ExecutorFinish_hook_type ExecutorFinish_hook;
/* Hook for plugins to get control in ExecutorEnd() */
typedef void (*ExecutorEnd_hook_type) (QueryDesc *queryDesc);
extern PGDLLIMPORT ExecutorEnd_hook_type ExecutorEnd_hook;
/* Hook for plugins to get control in ExecCheckPermissions() */
typedef bool (*ExecutorCheckPerms_hook_type) (List *rangeTable,
List *rtePermInfos,
bool ereport_on_violation);
extern PGDLLIMPORT ExecutorCheckPerms_hook_type ExecutorCheckPerms_hook;
/*
* prototypes from functions in execAmi . c
*/
struct Path; /* avoid including pathnodes.h here */
extern void ExecReScan(PlanState *node);
extern void ExecMarkPos(PlanState *node);
extern void ExecRestrPos(PlanState *node);
extern bool ExecSupportsMarkRestore(struct Path *pathnode);
extern bool ExecSupportsBackwardScan(Plan *node);
extern bool ExecMaterializesOutput(NodeTag plantype);
/*
* prototypes from functions in execCurrent . c
*/
extern bool execCurrentOf(CurrentOfExpr *cexpr,
ExprContext *econtext,
Oid table_oid,
ItemPointer current_tid);
/*
* prototypes from functions in execGrouping . c
*/
extern ExprState *execTuplesMatchPrepare(TupleDesc desc,
int numCols,
const AttrNumber *keyColIdx,
const Oid *eqOperators,
const Oid *collations,
PlanState *parent);
extern void execTuplesHashPrepare(int numCols,
const Oid *eqOperators,
Oid **eqFuncOids,
FmgrInfo **hashFunctions);
extern TupleHashTable BuildTupleHashTable(PlanState *parent,
TupleDesc inputDesc,
const TupleTableSlotOps *inputOps,
int numCols,
AttrNumber *keyColIdx,
const Oid *eqfuncoids,
FmgrInfo *hashfunctions,
Oid *collations,
long nbuckets,
Size additionalsize,
MemoryContext metacxt,
MemoryContext tablecxt,
MemoryContext tempcxt,
bool use_variable_hash_iv);
extern TupleHashEntry LookupTupleHashEntry(TupleHashTable hashtable,
TupleTableSlot *slot,
bool *isnew, uint32 *hash);
extern uint32 TupleHashTableHash(TupleHashTable hashtable,
TupleTableSlot *slot);
extern TupleHashEntry LookupTupleHashEntryHash(TupleHashTable hashtable,
TupleTableSlot *slot,
bool *isnew, uint32 hash);
extern TupleHashEntry FindTupleHashEntry(TupleHashTable hashtable,
TupleTableSlot *slot,
ExprState *eqcomp,
ExprState *hashexpr);
extern void ResetTupleHashTable(TupleHashTable hashtable);
#ifndef FRONTEND
/*
* Return size of the hash bucket . Useful for estimating memory usage .
*/
static inline size_t
TupleHashEntrySize(void )
{
return sizeof (TupleHashEntryData);
}
/*
* Return tuple from hash entry .
*/
static inline MinimalTuple
TupleHashEntryGetTuple(TupleHashEntry entry)
{
return entry->firstTuple;
}
/*
* Get a pointer into the additional space allocated for this entry . The
* memory will be maxaligned and zeroed .
*
* The amount of space available is the additionalsize requested in the call
* to BuildTupleHashTable ( ) . If additionalsize was specified as zero , return
* NULL .
*/
static inline void *
TupleHashEntryGetAdditional(TupleHashTable hashtable, TupleHashEntry entry)
{
if (hashtable->additionalsize > 0 )
return (char *) entry->firstTuple - hashtable->additionalsize;
else
return NULL;
}
#endif
/*
* prototypes from functions in execJunk . c
*/
extern JunkFilter *ExecInitJunkFilter(List *targetList,
TupleTableSlot *slot);
extern JunkFilter *ExecInitJunkFilterConversion(List *targetList,
TupleDesc cleanTupType,
TupleTableSlot *slot);
extern AttrNumber ExecFindJunkAttribute(JunkFilter *junkfilter,
const char *attrName);
extern AttrNumber ExecFindJunkAttributeInTlist(List *targetlist,
const char *attrName);
extern TupleTableSlot *ExecFilterJunk(JunkFilter *junkfilter,
TupleTableSlot *slot);
/*
* ExecGetJunkAttribute
*
* Given a junk filter ' s input tuple ( slot ) and a junk attribute ' s number
* previously found by ExecFindJunkAttribute , extract & return the value and
* isNull flag of the attribute .
*/
#ifndef FRONTEND
static inline Datum
ExecGetJunkAttribute(TupleTableSlot *slot, AttrNumber attno, bool *isNull)
{
Assert(attno > 0 );
return slot_getattr(slot, attno, isNull);
}
#endif
/*
* prototypes from functions in execMain . c
*/
extern void ExecutorStart(QueryDesc *queryDesc, int eflags);
extern void standard_ExecutorStart(QueryDesc *queryDesc, int eflags);
extern void ExecutorRun(QueryDesc *queryDesc,
ScanDirection direction, uint64 count);
extern void standard_ExecutorRun(QueryDesc *queryDesc,
ScanDirection direction, uint64 count);
extern void ExecutorFinish(QueryDesc *queryDesc);
extern void standard_ExecutorFinish(QueryDesc *queryDesc);
extern void ExecutorEnd(QueryDesc *queryDesc);
extern void standard_ExecutorEnd(QueryDesc *queryDesc);
extern void ExecutorRewind(QueryDesc *queryDesc);
extern bool ExecCheckPermissions(List *rangeTable,
List *rteperminfos, bool ereport_on_violation);
extern bool ExecCheckOneRelPerms(RTEPermissionInfo *perminfo);
extern void CheckValidResultRel(ResultRelInfo *resultRelInfo, CmdType operation,
OnConflictAction onConflictAction,
List *mergeActions);
extern void InitResultRelInfo(ResultRelInfo *resultRelInfo,
Relation resultRelationDesc,
Index resultRelationIndex,
ResultRelInfo *partition_root_rri,
int instrument_options);
extern ResultRelInfo *ExecGetTriggerResultRel(EState *estate, Oid relid,
ResultRelInfo *rootRelInfo);
extern List *ExecGetAncestorResultRels(EState *estate, ResultRelInfo *resultRelInfo);
extern void ExecConstraints(ResultRelInfo *resultRelInfo,
TupleTableSlot *slot, EState *estate);
extern AttrNumber ExecRelGenVirtualNotNull(ResultRelInfo *resultRelInfo,
TupleTableSlot *slot,
EState *estate,
List *notnull_virtual_attrs);
extern bool ExecPartitionCheck(ResultRelInfo *resultRelInfo,
TupleTableSlot *slot, EState *estate, bool emitError);
extern void ExecPartitionCheckEmitError(ResultRelInfo *resultRelInfo,
TupleTableSlot *slot, EState *estate);
extern void ExecWithCheckOptions(WCOKind kind, ResultRelInfo *resultRelInfo,
TupleTableSlot *slot, EState *estate);
extern char *ExecBuildSlotValueDescription(Oid reloid, TupleTableSlot *slot,
TupleDesc tupdesc,
Bitmapset *modifiedCols,
int maxfieldlen);
extern LockTupleMode ExecUpdateLockMode(EState *estate, ResultRelInfo *relinfo);
extern ExecRowMark *ExecFindRowMark(EState *estate, Index rti, bool missing_ok);
extern ExecAuxRowMark *ExecBuildAuxRowMark(ExecRowMark *erm, List *targetlist);
extern TupleTableSlot *EvalPlanQual(EPQState *epqstate, Relation relation,
Index rti, TupleTableSlot *inputslot);
extern void EvalPlanQualInit(EPQState *epqstate, EState *parentestate,
Plan *subplan, List *auxrowmarks,
int epqParam, List *resultRelations);
extern void EvalPlanQualSetPlan(EPQState *epqstate,
Plan *subplan, List *auxrowmarks);
extern TupleTableSlot *EvalPlanQualSlot(EPQState *epqstate,
Relation relation, Index rti);
#define EvalPlanQualSetSlot(epqstate, slot) ((epqstate)->origslot = (slot))
extern bool EvalPlanQualFetchRowMark(EPQState *epqstate, Index rti, TupleTableSlot *slot);
extern TupleTableSlot *EvalPlanQualNext(EPQState *epqstate);
extern void EvalPlanQualBegin(EPQState *epqstate);
extern void EvalPlanQualEnd(EPQState *epqstate);
/*
* functions in execProcnode . c
*/
extern PlanState *ExecInitNode(Plan *node, EState *estate, int eflags);
extern void ExecSetExecProcNode(PlanState *node, ExecProcNodeMtd function);
extern Node *MultiExecProcNode(PlanState *node);
extern void ExecEndNode(PlanState *node);
extern void ExecShutdownNode(PlanState *node);
extern void ExecSetTupleBound(int64 tuples_needed, PlanState *child_node);
/* ----------------------------------------------------------------
* ExecProcNode
*
* Execute the given node to return a ( nother ) tuple .
* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
*/
#ifndef FRONTEND
static inline TupleTableSlot *
ExecProcNode(PlanState *node)
{
if (node->chgParam != NULL) /* something changed? */
ExecReScan(node); /* let ReScan handle this */
return node->ExecProcNode(node);
}
#endif
/*
* prototypes from functions in execExpr . c
*/
extern ExprState *ExecInitExpr(Expr *node, PlanState *parent);
extern ExprState *ExecInitExprWithParams(Expr *node, ParamListInfo ext_params);
extern ExprState *ExecInitQual(List *qual, PlanState *parent);
extern ExprState *ExecInitCheck(List *qual, PlanState *parent);
extern List *ExecInitExprList(List *nodes, PlanState *parent);
extern ExprState *ExecBuildAggTrans(AggState *aggstate, struct AggStatePerPhaseData *phase,
bool doSort, bool doHash, bool nullcheck);
extern ExprState *ExecBuildHash32FromAttrs(TupleDesc desc,
const TupleTableSlotOps *ops,
FmgrInfo *hashfunctions,
Oid *collations,
int numCols,
AttrNumber *keyColIdx,
PlanState *parent,
uint32 init_value);
extern ExprState *ExecBuildHash32Expr(TupleDesc desc,
const TupleTableSlotOps *ops,
const Oid *hashfunc_oids,
const List *collations,
const List *hash_exprs,
const bool *opstrict, PlanState *parent,
uint32 init_value, bool keep_nulls);
extern ExprState *ExecBuildGroupingEqual(TupleDesc ldesc, TupleDesc rdesc,
const TupleTableSlotOps *lops, const TupleTableSlotOps *rops,
int numCols,
const AttrNumber *keyColIdx,
const Oid *eqfunctions,
const Oid *collations,
PlanState *parent);
extern ExprState *ExecBuildParamSetEqual(TupleDesc desc,
const TupleTableSlotOps *lops,
const TupleTableSlotOps *rops,
const Oid *eqfunctions,
const Oid *collations,
const List *param_exprs,
PlanState *parent);
extern ProjectionInfo *ExecBuildProjectionInfo(List *targetList,
ExprContext *econtext,
TupleTableSlot *slot,
PlanState *parent,
TupleDesc inputDesc);
extern ProjectionInfo *ExecBuildUpdateProjection(List *targetList,
bool evalTargetList,
List *targetColnos,
TupleDesc relDesc,
ExprContext *econtext,
TupleTableSlot *slot,
PlanState *parent);
extern ExprState *ExecPrepareExpr(Expr *node, EState *estate);
extern ExprState *ExecPrepareQual(List *qual, EState *estate);
extern ExprState *ExecPrepareCheck(List *qual, EState *estate);
extern List *ExecPrepareExprList(List *nodes, EState *estate);
/*
* ExecEvalExpr
*
* Evaluate expression identified by " state " in the execution context
* given by " econtext " . * isNull is set to the is - null flag for the result ,
* and the Datum value is the function result .
*
* The caller should already have switched into the temporary memory
* context econtext - > ecxt_per_tuple_memory . The convenience entry point
* ExecEvalExprSwitchContext ( ) is provided for callers who don ' t prefer to
* do the switch in an outer loop .
*/
#ifndef FRONTEND
static inline Datum
ExecEvalExpr(ExprState *state,
ExprContext *econtext,
bool *isNull)
{
return state->evalfunc(state, econtext, isNull);
}
#endif
/*
* ExecEvalExprNoReturn
*
* Like ExecEvalExpr ( ) , but for cases where no return value is expected ,
* because the side - effects of expression evaluation are what ' s desired . This
* is e . g . used for projection and aggregate transition computation .
* Evaluate expression identified by " state " in the execution context
* given by " econtext " .
*
* The caller should already have switched into the temporary memory context
* econtext - > ecxt_per_tuple_memory . The convenience entry point
* ExecEvalExprNoReturnSwitchContext ( ) is provided for callers who don ' t
* prefer to do the switch in an outer loop .
*/
#ifndef FRONTEND
static inline void
ExecEvalExprNoReturn(ExprState *state,
ExprContext *econtext)
{
PG_USED_FOR_ASSERTS_ONLY Datum retDatum;
retDatum = state->evalfunc(state, econtext, NULL);
Assert(retDatum == (Datum) 0 );
}
#endif
/*
* ExecEvalExprSwitchContext
*
* Same as ExecEvalExpr , but get into the right allocation context explicitly .
*/
#ifndef FRONTEND
static inline Datum
ExecEvalExprSwitchContext(ExprState *state,
ExprContext *econtext,
bool *isNull)
{
Datum retDatum;
MemoryContext oldContext;
oldContext = MemoryContextSwitchTo(econtext->ecxt_per_tuple_memory);
retDatum = state->evalfunc(state, econtext, isNull);
MemoryContextSwitchTo(oldContext);
return retDatum;
}
#endif
/*
* ExecEvalExprNoReturnSwitchContext
*
* Same as ExecEvalExprNoReturn , but get into the right allocation context
* explicitly .
*/
#ifndef FRONTEND
static inline void
ExecEvalExprNoReturnSwitchContext(ExprState *state,
ExprContext *econtext)
{
MemoryContext oldContext;
oldContext = MemoryContextSwitchTo(econtext->ecxt_per_tuple_memory);
ExecEvalExprNoReturn(state, econtext);
MemoryContextSwitchTo(oldContext);
}
#endif
/*
* ExecProject
*
* Projects a tuple based on projection info and stores it in the slot passed
* to ExecBuildProjectionInfo ( ) .
*
* Note : the result is always a virtual tuple ; therefore it may reference
* the contents of the exprContext ' s scan tuples and / or temporary results
* constructed in the exprContext . If the caller wishes the result to be
* valid longer than that data will be valid , he must call ExecMaterializeSlot
* on the result slot .
*/
#ifndef FRONTEND
static inline TupleTableSlot *
ExecProject(ProjectionInfo *projInfo)
{
ExprContext *econtext = projInfo->pi_exprContext;
ExprState *state = &projInfo->pi_state;
TupleTableSlot *slot = state->resultslot;
/*
* Clear any former contents of the result slot . This makes it safe for
* us to use the slot ' s Datum / isnull arrays as workspace .
*/
ExecClearTuple(slot);
/* Run the expression */
ExecEvalExprNoReturnSwitchContext(state, econtext);
/*
* Successfully formed a result row . Mark the result slot as containing a
* valid virtual tuple ( inlined version of ExecStoreVirtualTuple ( ) ) .
*/
slot->tts_flags &= ~TTS_FLAG_EMPTY;
slot->tts_nvalid = slot->tts_tupleDescriptor->natts;
return slot;
}
#endif
/*
* ExecQual - evaluate a qual prepared with ExecInitQual ( possibly via
* ExecPrepareQual ) . Returns true if qual is satisfied , else false .
*
* Note : ExecQual used to have a third argument " resultForNull " . The
* behavior of this function now corresponds to resultForNull = = false .
* If you want the resultForNull = = true behavior , see ExecCheck .
*/
#ifndef FRONTEND
static inline bool
ExecQual(ExprState *state, ExprContext *econtext)
{
Datum ret;
bool isnull;
/* short-circuit (here and in ExecInitQual) for empty restriction list */
if (state == NULL)
return true ;
/* verify that expression was compiled using ExecInitQual */
Assert(state->flags & EEO_FLAG_IS_QUAL);
ret = ExecEvalExprSwitchContext(state, econtext, &isnull);
/* EEOP_QUAL should never return NULL */
Assert(!isnull);
return DatumGetBool(ret);
}
#endif
/*
* ExecQualAndReset ( ) - evaluate qual with ExecQual ( ) and reset expression
* context .
*/
#ifndef FRONTEND
static inline bool
ExecQualAndReset(ExprState *state, ExprContext *econtext)
{
bool ret = ExecQual(state, econtext);
/* inline ResetExprContext, to avoid ordering issue in this file */
MemoryContextReset(econtext->ecxt_per_tuple_memory);
return ret;
}
#endif
extern bool ExecCheck(ExprState *state, ExprContext *econtext);
/*
* prototypes from functions in execSRF . c
*/
extern SetExprState *ExecInitTableFunctionResult(Expr *expr,
ExprContext *econtext, PlanState *parent);
extern Tuplestorestate *ExecMakeTableFunctionResult(SetExprState *setexpr,
ExprContext *econtext,
MemoryContext argContext,
TupleDesc expectedDesc,
bool randomAccess);
extern SetExprState *ExecInitFunctionResultSet(Expr *expr,
ExprContext *econtext, PlanState *parent);
extern Datum ExecMakeFunctionResultSet(SetExprState *fcache,
ExprContext *econtext,
MemoryContext argContext,
bool *isNull,
ExprDoneCond *isDone);
/*
* prototypes from functions in execScan . c
*/
typedef TupleTableSlot *(*ExecScanAccessMtd) (ScanState *node);
typedef bool (*ExecScanRecheckMtd) (ScanState *node, TupleTableSlot *slot);
extern TupleTableSlot *ExecScan(ScanState *node, ExecScanAccessMtd accessMtd,
ExecScanRecheckMtd recheckMtd);
extern void ExecAssignScanProjectionInfo(ScanState *node);
extern void ExecAssignScanProjectionInfoWithVarno(ScanState *node, int varno);
extern void ExecScanReScan(ScanState *node);
/*
* prototypes from functions in execTuples . c
*/
extern void ExecInitResultTypeTL(PlanState *planstate);
extern void ExecInitResultSlot(PlanState *planstate,
const TupleTableSlotOps *tts_ops);
extern void ExecInitResultTupleSlotTL(PlanState *planstate,
const TupleTableSlotOps *tts_ops);
extern void ExecInitScanTupleSlot(EState *estate, ScanState *scanstate,
TupleDesc tupledesc,
const TupleTableSlotOps *tts_ops);
extern TupleTableSlot *ExecInitExtraTupleSlot(EState *estate,
TupleDesc tupledesc,
const TupleTableSlotOps *tts_ops);
extern TupleTableSlot *ExecInitNullTupleSlot(EState *estate, TupleDesc tupType,
const TupleTableSlotOps *tts_ops);
extern TupleDesc ExecTypeFromTL(List *targetList);
extern TupleDesc ExecCleanTypeFromTL(List *targetList);
extern TupleDesc ExecTypeFromExprList(List *exprList);
extern void ExecTypeSetColNames(TupleDesc typeInfo, List *namesList);
extern void UpdateChangedParamSet(PlanState *node, Bitmapset *newchg);
typedef struct TupOutputState
{
TupleTableSlot *slot;
DestReceiver *dest;
} TupOutputState;
extern TupOutputState *begin_tup_output_tupdesc(DestReceiver *dest,
TupleDesc tupdesc,
const TupleTableSlotOps *tts_ops);
extern void do_tup_output(TupOutputState *tstate, const Datum *values, const bool *isnull);
extern void do_text_output_multiline(TupOutputState *tstate, const char *txt);
extern void end_tup_output(TupOutputState *tstate);
/*
* Write a single line of text given as a C string .
*
* Should only be used with a single - TEXT - attribute tupdesc .
*/
#define do_text_output_oneline(tstate, str_to_emit) \
do { \
Datum values_[1 ]; \
bool isnull_[1 ]; \
values_[0 ] = PointerGetDatum(cstring_to_text(str_to_emit)); \
isnull_[0 ] = false ; \
do_tup_output(tstate, values_, isnull_); \
pfree(DatumGetPointer(values_[0 ])); \
} while (0 )
/*
* prototypes from functions in execUtils . c
*/
extern EState *CreateExecutorState(void );
extern void FreeExecutorState(EState *estate);
extern ExprContext *CreateExprContext(EState *estate);
extern ExprContext *CreateWorkExprContext(EState *estate);
extern ExprContext *CreateStandaloneExprContext(void );
extern void FreeExprContext(ExprContext *econtext, bool isCommit);
extern void ReScanExprContext(ExprContext *econtext);
#define ResetExprContext(econtext) \
MemoryContextReset((econtext)->ecxt_per_tuple_memory)
extern ExprContext *MakePerTupleExprContext(EState *estate);
/* Get an EState's per-output-tuple exprcontext, making it if first use */
#define GetPerTupleExprContext(estate) \
((estate)->es_per_tuple_exprcontext ? \
(estate)->es_per_tuple_exprcontext : \
MakePerTupleExprContext(estate))
#define GetPerTupleMemoryContext(estate) \
(GetPerTupleExprContext(estate)->ecxt_per_tuple_memory)
/* Reset an EState's per-output-tuple exprcontext, if one's been created */
#define ResetPerTupleExprContext(estate) \
do { \
if ((estate)->es_per_tuple_exprcontext) \
ResetExprContext((estate)->es_per_tuple_exprcontext); \
} while (0 )
extern void ExecAssignExprContext(EState *estate, PlanState *planstate);
extern TupleDesc ExecGetResultType(PlanState *planstate);
extern const TupleTableSlotOps *ExecGetResultSlotOps(PlanState *planstate,
bool *isfixed);
extern const TupleTableSlotOps *ExecGetCommonSlotOps(PlanState **planstates,
int nplans);
extern const TupleTableSlotOps *ExecGetCommonChildSlotOps(PlanState *ps);
extern void ExecAssignProjectionInfo(PlanState *planstate,
TupleDesc inputDesc);
extern void ExecConditionalAssignProjectionInfo(PlanState *planstate,
TupleDesc inputDesc, int varno);
extern void ExecAssignScanType(ScanState *scanstate, TupleDesc tupDesc);
extern void ExecCreateScanSlotFromOuterPlan(EState *estate,
ScanState *scanstate,
const TupleTableSlotOps *tts_ops);
extern bool ExecRelationIsTargetRelation(EState *estate, Index scanrelid);
extern Relation ExecOpenScanRelation(EState *estate, Index scanrelid, int eflags);
extern void ExecInitRangeTable(EState *estate, List *rangeTable, List *permInfos,
Bitmapset *unpruned_relids);
extern void ExecCloseRangeTableRelations(EState *estate);
extern void ExecCloseResultRelations(EState *estate);
static inline RangeTblEntry *
exec_rt_fetch(Index rti, EState *estate)
{
return (RangeTblEntry *) list_nth(estate->es_range_table, rti - 1 );
}
extern Relation ExecGetRangeTableRelation(EState *estate, Index rti,
bool isResultRel);
extern void ExecInitResultRelation(EState *estate, ResultRelInfo *resultRelInfo,
Index rti);
extern int executor_errposition(EState *estate, int location);
extern void RegisterExprContextCallback(ExprContext *econtext,
ExprContextCallbackFunction function,
Datum arg);
extern void UnregisterExprContextCallback(ExprContext *econtext,
ExprContextCallbackFunction function,
Datum arg);
extern Datum GetAttributeByName(HeapTupleHeader tuple, const char *attname,
bool *isNull);
extern Datum GetAttributeByNum(HeapTupleHeader tuple, AttrNumber attrno,
bool *isNull);
extern int ExecTargetListLength(List *targetlist);
extern int ExecCleanTargetListLength(List *targetlist);
extern TupleTableSlot *ExecGetTriggerOldSlot(EState *estate, ResultRelInfo *relInfo);
extern TupleTableSlot *ExecGetTriggerNewSlot(EState *estate, ResultRelInfo *relInfo);
extern TupleTableSlot *ExecGetReturningSlot(EState *estate, ResultRelInfo *relInfo);
extern TupleTableSlot *ExecGetAllNullSlot(EState *estate, ResultRelInfo *relInfo);
extern TupleConversionMap *ExecGetChildToRootMap(ResultRelInfo *resultRelInfo);
extern TupleConversionMap *ExecGetRootToChildMap(ResultRelInfo *resultRelInfo, EState *estate);
extern Oid ExecGetResultRelCheckAsUser(ResultRelInfo *relInfo, EState *estate);
extern Bitmapset *ExecGetInsertedCols(ResultRelInfo *relinfo, EState *estate);
extern Bitmapset *ExecGetUpdatedCols(ResultRelInfo *relinfo, EState *estate);
extern Bitmapset *ExecGetExtraUpdatedCols(ResultRelInfo *relinfo, EState *estate);
extern Bitmapset *ExecGetAllUpdatedCols(ResultRelInfo *relinfo, EState *estate);
/*
* prototypes from functions in execIndexing . c
*/
extern void ExecOpenIndices(ResultRelInfo *resultRelInfo, bool speculative);
extern void ExecCloseIndices(ResultRelInfo *resultRelInfo);
extern List *ExecInsertIndexTuples(ResultRelInfo *resultRelInfo,
TupleTableSlot *slot, EState *estate,
bool update,
bool noDupErr,
bool *specConflict, List *arbiterIndexes,
bool onlySummarizing);
extern bool ExecCheckIndexConstraints(ResultRelInfo *resultRelInfo,
TupleTableSlot *slot,
EState *estate, ItemPointer conflictTid,
ItemPointer tupleid,
List *arbiterIndexes);
extern void check_exclusion_constraint(Relation heap, Relation index,
IndexInfo *indexInfo,
ItemPointer tupleid,
const Datum *values, const bool *isnull,
EState *estate, bool newIndex);
/*
* prototypes from functions in execReplication . c
*/
extern bool RelationFindReplTupleByIndex(Relation rel, Oid idxoid,
LockTupleMode lockmode,
TupleTableSlot *searchslot,
TupleTableSlot *outslot);
extern bool RelationFindReplTupleSeq(Relation rel, LockTupleMode lockmode,
TupleTableSlot *searchslot, TupleTableSlot *outslot);
extern void ExecSimpleRelationInsert(ResultRelInfo *resultRelInfo,
EState *estate, TupleTableSlot *slot);
extern void ExecSimpleRelationUpdate(ResultRelInfo *resultRelInfo,
EState *estate, EPQState *epqstate,
TupleTableSlot *searchslot, TupleTableSlot *slot);
extern void ExecSimpleRelationDelete(ResultRelInfo *resultRelInfo,
EState *estate, EPQState *epqstate,
TupleTableSlot *searchslot);
extern void CheckCmdReplicaIdentity(Relation rel, CmdType cmd);
extern void CheckSubscriptionRelkind(char relkind, const char *nspname,
const char *relname);
/*
* prototypes from functions in nodeModifyTable . c
*/
extern TupleTableSlot *ExecGetUpdateNewTuple(ResultRelInfo *relinfo,
TupleTableSlot *planSlot,
TupleTableSlot *oldSlot);
extern ResultRelInfo *ExecLookupResultRelByOid(ModifyTableState *node,
Oid resultoid,
bool missing_ok,
bool update_cache);
#endif /* EXECUTOR_H */
Messung V0.5 in Prozent C=89 H=98 G=93
¤ Dauer der Verarbeitung: 0.19 Sekunden
(vorverarbeitet am 2026-08-08)
¤
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