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PostgreSQL/src/include/executor/executor.h
Andres Freund 27cc7cd2bc Reorder EPQ work, to fix rowmark related bugs and improve efficiency. 
In ad0bda5d24ea I changed the EvalPlanQual machinery to store
substitution tuples in slot, instead of using plain HeapTuples. The
main motivation for that was that using HeapTuples will be inefficient
for future tableams.  But it turns out that that conversion was buggy
for non-locking rowmarks - the wrong tuple descriptor was used to
create the slot.

As a secondary issue 5db6df0c0 changed ExecLockRows() to begin EPQ
earlier, to allow to fetch the locked rows directly into the EPQ
slots, instead of having to copy tuples around. Unfortunately, as Tom
complained, that forces some expensive initialization to happen
earlier.

As a third issue, the test coverage for EPQ was clearly insufficient.

Fixing the first issue is unfortunately not trivial: Non-locked row
marks were fetched at the start of EPQ, and we don't have the type
information for the rowmarks available at that point. While we could
change that, it's not easy. It might be worthwhile to change that at
some point, but to fix this bug, it seems better to delay fetching
non-locking rowmarks when they're actually needed, rather than
eagerly. They're referenced at most once, and in cases where EPQ
fails, might never be referenced. Fetching them when needed also
increases locality a bit.

To be able to fetch rowmarks during execution, rather than
initialization, we need to be able to access the active EPQState, as
that contains necessary data. To do so move EPQ related data from
EState to EPQState, and, only for EStates creates as part of EPQ,
reference the associated EPQState from EState.

To fix the second issue, change EPQ initialization to allow use of
EvalPlanQualSlot() to be used before EvalPlanQualBegin() (but
obviously still requiring EvalPlanQualInit() to have been done).

As these changes made struct EState harder to understand, e.g. by
adding multiple EStates, significantly reorder the members, and add a
lot more comments.

Also add a few more EPQ tests, including one that fails for the first
issue above. More is needed.

Reported-By: yi huang
Author: Andres Freund
Reviewed-By: Tom Lane
Discussion:
    https://postgr.es/m/CAHU7rYZo_C4ULsAx_LAj8az9zqgrD8WDd4hTegDTMM1LMqrBsg@mail.gmail.com
    https://postgr.es/m/24530.1562686693@sss.pgh.pa.us
Backpatch: 12-, where the EPQ changes were introduced
2019-09-09 05:14:11 -07:00

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/*-------------------------------------------------------------------------
*
* executor.h
* support for the POSTGRES executor module
*
*
* Portions Copyright (c) 1996-2019, 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.
*
* 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.
*/
#define EXEC_FLAG_EXPLAIN_ONLY 0x0001 /* EXPLAIN, no ANALYZE */
#define EXEC_FLAG_REWIND 0x0002 /* need efficient rescan */
#define EXEC_FLAG_BACKWARD 0x0004 /* need backward scan */
#define EXEC_FLAG_MARK 0x0008 /* need mark/restore */
#define EXEC_FLAG_SKIP_TRIGGERS 0x0010 /* skip AfterTrigger calls */
#define EXEC_FLAG_WITH_NO_DATA 0x0020 /* rel scannability doesn't matter */
/* 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,
bool execute_once);
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 ExecCheckRTPerms() */
typedef bool (*ExecutorCheckPerms_hook_type) (List *, bool);
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,
int numCols, AttrNumber *keyColIdx,
const Oid *eqfuncoids,
FmgrInfo *hashfunctions,
Oid *collations,
long nbuckets, Size additionalsize,
MemoryContext tablecxt,
MemoryContext tempcxt, bool use_variable_hash_iv);
extern TupleHashTable BuildTupleHashTableExt(PlanState *parent,
TupleDesc inputDesc,
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);
extern TupleHashEntry FindTupleHashEntry(TupleHashTable hashtable,
TupleTableSlot *slot,
ExprState *eqcomp,
FmgrInfo *hashfunctions);
extern void ResetTupleHashTable(TupleHashTable hashtable);
/*
* 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 Datum ExecGetJunkAttribute(TupleTableSlot *slot, AttrNumber attno,
bool *isNull);
extern TupleTableSlot *ExecFilterJunk(JunkFilter *junkfilter,
TupleTableSlot *slot);
/*
* 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, bool execute_once);
extern void standard_ExecutorRun(QueryDesc *queryDesc,
ScanDirection direction, uint64 count, bool execute_once);
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 ExecCheckRTPerms(List *rangeTable, bool ereport_on_violation);
extern void CheckValidResultRel(ResultRelInfo *resultRelInfo, CmdType operation);
extern void InitResultRelInfo(ResultRelInfo *resultRelInfo,
Relation resultRelationDesc,
Index resultRelationIndex,
Relation partition_root,
int instrument_options);
extern ResultRelInfo *ExecGetTriggerResultRel(EState *estate, Oid relid);
extern void ExecCleanUpTriggerState(EState *estate);
extern void ExecConstraints(ResultRelInfo *resultRelInfo,
TupleTableSlot *slot, EState *estate);
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 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 *testslot);
extern void EvalPlanQualInit(EPQState *epqstate, EState *parentestate,
Plan *subplan, List *auxrowmarks, int epqParam);
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 bool 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);
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 ProjectionInfo *ExecBuildProjectionInfo(List *targetList,
ExprContext *econtext,
TupleTableSlot *slot,
PlanState *parent,
TupleDesc inputDesc);
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
/*
* 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
/*
* 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;
bool isnull;
/*
* 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, discarding scalar result from the last column. */
(void) ExecEvalExprSwitchContext(state, econtext, &isnull);
/*
* 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 *context);
/*
* 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, Index 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, Datum *values, 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 *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 void ExecAssignProjectionInfo(PlanState *planstate,
TupleDesc inputDesc);
extern void ExecConditionalAssignProjectionInfo(PlanState *planstate,
TupleDesc inputDesc, Index varno);
extern void ExecFreeExprContext(PlanState *planstate);
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);
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);
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);
/*
* prototypes from functions in execIndexing.c
*/
extern void ExecOpenIndices(ResultRelInfo *resultRelInfo, bool speculative);
extern void ExecCloseIndices(ResultRelInfo *resultRelInfo);
extern List *ExecInsertIndexTuples(TupleTableSlot *slot, EState *estate, bool noDupErr,
bool *specConflict, List *arbiterIndexes);
extern bool ExecCheckIndexConstraints(TupleTableSlot *slot, EState *estate,
ItemPointer conflictTid, List *arbiterIndexes);
extern void check_exclusion_constraint(Relation heap, Relation index,
IndexInfo *indexInfo,
ItemPointer tupleid,
Datum *values, 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(EState *estate, TupleTableSlot *slot);
extern void ExecSimpleRelationUpdate(EState *estate, EPQState *epqstate,
TupleTableSlot *searchslot, TupleTableSlot *slot);
extern void ExecSimpleRelationDelete(EState *estate, EPQState *epqstate,
TupleTableSlot *searchslot);
extern void CheckCmdReplicaIdentity(Relation rel, CmdType cmd);
extern void CheckSubscriptionRelkind(char relkind, const char *nspname,
const char *relname);
#endif /* EXECUTOR_H */
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