1 /*-------------------------------------------------------------------------
2 *
3 * executor.h
4 * support for the POSTGRES executor module
5 *
6 *
7 * Portions Copyright (c) 1996-2017, PostgreSQL Global Development Group
8 * Portions Copyright (c) 1994, Regents of the University of California
9 *
10 * src/include/executor/executor.h
11 *
12 *-------------------------------------------------------------------------
13 */
14 #ifndef EXECUTOR_H
15 #define EXECUTOR_H
16
17 #include "catalog/partition.h"
18 #include "executor/execdesc.h"
19 #include "nodes/parsenodes.h"
20
21
22 /*
23 * The "eflags" argument to ExecutorStart and the various ExecInitNode
24 * routines is a bitwise OR of the following flag bits, which tell the
25 * called plan node what to expect. Note that the flags will get modified
26 * as they are passed down the plan tree, since an upper node may require
27 * functionality in its subnode not demanded of the plan as a whole
28 * (example: MergeJoin requires mark/restore capability in its inner input),
29 * or an upper node may shield its input from some functionality requirement
30 * (example: Materialize shields its input from needing to do backward scan).
31 *
32 * EXPLAIN_ONLY indicates that the plan tree is being initialized just so
33 * EXPLAIN can print it out; it will not be run. Hence, no side-effects
34 * of startup should occur. However, error checks (such as permission checks)
35 * should be performed.
36 *
37 * REWIND indicates that the plan node should try to efficiently support
38 * rescans without parameter changes. (Nodes must support ExecReScan calls
39 * in any case, but if this flag was not given, they are at liberty to do it
40 * through complete recalculation. Note that a parameter change forces a
41 * full recalculation in any case.)
42 *
43 * BACKWARD indicates that the plan node must respect the es_direction flag.
44 * When this is not passed, the plan node will only be run forwards.
45 *
46 * MARK indicates that the plan node must support Mark/Restore calls.
47 * When this is not passed, no Mark/Restore will occur.
48 *
49 * SKIP_TRIGGERS tells ExecutorStart/ExecutorFinish to skip calling
50 * AfterTriggerBeginQuery/AfterTriggerEndQuery. This does not necessarily
51 * mean that the plan can't queue any AFTER triggers; just that the caller
52 * is responsible for there being a trigger context for them to be queued in.
53 *
54 * WITH/WITHOUT_OIDS tell the executor to emit tuples with or without space
55 * for OIDs, respectively. These are currently used only for CREATE TABLE AS.
56 * If neither is set, the plan may or may not produce tuples including OIDs.
57 */
58 #define EXEC_FLAG_EXPLAIN_ONLY 0x0001 /* EXPLAIN, no ANALYZE */
59 #define EXEC_FLAG_REWIND 0x0002 /* need efficient rescan */
60 #define EXEC_FLAG_BACKWARD 0x0004 /* need backward scan */
61 #define EXEC_FLAG_MARK 0x0008 /* need mark/restore */
62 #define EXEC_FLAG_SKIP_TRIGGERS 0x0010 /* skip AfterTrigger calls */
63 #define EXEC_FLAG_WITH_OIDS 0x0020 /* force OIDs in returned tuples */
64 #define EXEC_FLAG_WITHOUT_OIDS 0x0040 /* force no OIDs in returned tuples */
65 #define EXEC_FLAG_WITH_NO_DATA 0x0080 /* rel scannability doesn't matter */
66
67
68 /* Hook for plugins to get control in ExecutorStart() */
69 typedef void (*ExecutorStart_hook_type) (QueryDesc *queryDesc, int eflags);
70 extern PGDLLIMPORT ExecutorStart_hook_type ExecutorStart_hook;
71
72 /* Hook for plugins to get control in ExecutorRun() */
73 typedef void (*ExecutorRun_hook_type) (QueryDesc *queryDesc,
74 ScanDirection direction,
75 uint64 count,
76 bool execute_once);
77 extern PGDLLIMPORT ExecutorRun_hook_type ExecutorRun_hook;
78
79 /* Hook for plugins to get control in ExecutorFinish() */
80 typedef void (*ExecutorFinish_hook_type) (QueryDesc *queryDesc);
81 extern PGDLLIMPORT ExecutorFinish_hook_type ExecutorFinish_hook;
82
83 /* Hook for plugins to get control in ExecutorEnd() */
84 typedef void (*ExecutorEnd_hook_type) (QueryDesc *queryDesc);
85 extern PGDLLIMPORT ExecutorEnd_hook_type ExecutorEnd_hook;
86
87 /* Hook for plugins to get control in ExecCheckRTPerms() */
88 typedef bool (*ExecutorCheckPerms_hook_type) (List *, bool);
89 extern PGDLLIMPORT ExecutorCheckPerms_hook_type ExecutorCheckPerms_hook;
90
91
92 /*
93 * prototypes from functions in execAmi.c
94 */
95 struct Path; /* avoid including relation.h here */
96
97 extern void ExecReScan(PlanState *node);
98 extern void ExecMarkPos(PlanState *node);
99 extern void ExecRestrPos(PlanState *node);
100 extern bool ExecSupportsMarkRestore(struct Path *pathnode);
101 extern bool ExecSupportsBackwardScan(Plan *node);
102 extern bool ExecMaterializesOutput(NodeTag plantype);
103
104 /*
105 * prototypes from functions in execCurrent.c
106 */
107 extern bool execCurrentOf(CurrentOfExpr *cexpr,
108 ExprContext *econtext,
109 Oid table_oid,
110 ItemPointer current_tid);
111
112 /*
113 * prototypes from functions in execGrouping.c
114 */
115 extern bool execTuplesMatch(TupleTableSlot *slot1,
116 TupleTableSlot *slot2,
117 int numCols,
118 AttrNumber *matchColIdx,
119 FmgrInfo *eqfunctions,
120 MemoryContext evalContext);
121 extern bool execTuplesUnequal(TupleTableSlot *slot1,
122 TupleTableSlot *slot2,
123 int numCols,
124 AttrNumber *matchColIdx,
125 FmgrInfo *eqfunctions,
126 MemoryContext evalContext);
127 extern FmgrInfo *execTuplesMatchPrepare(int numCols,
128 Oid *eqOperators);
129 extern void execTuplesHashPrepare(int numCols,
130 Oid *eqOperators,
131 FmgrInfo **eqFunctions,
132 FmgrInfo **hashFunctions);
133 extern TupleHashTable BuildTupleHashTable(int numCols, AttrNumber *keyColIdx,
134 FmgrInfo *eqfunctions,
135 FmgrInfo *hashfunctions,
136 long nbuckets, Size additionalsize,
137 MemoryContext tablecxt,
138 MemoryContext tempcxt, bool use_variable_hash_iv);
139 extern TupleHashEntry LookupTupleHashEntry(TupleHashTable hashtable,
140 TupleTableSlot *slot,
141 bool *isnew);
142 extern TupleHashEntry FindTupleHashEntry(TupleHashTable hashtable,
143 TupleTableSlot *slot,
144 FmgrInfo *eqfunctions,
145 FmgrInfo *hashfunctions);
146
147 /*
148 * prototypes from functions in execJunk.c
149 */
150 extern JunkFilter *ExecInitJunkFilter(List *targetList, bool hasoid,
151 TupleTableSlot *slot);
152 extern JunkFilter *ExecInitJunkFilterConversion(List *targetList,
153 TupleDesc cleanTupType,
154 TupleTableSlot *slot);
155 extern AttrNumber ExecFindJunkAttribute(JunkFilter *junkfilter,
156 const char *attrName);
157 extern AttrNumber ExecFindJunkAttributeInTlist(List *targetlist,
158 const char *attrName);
159 extern Datum ExecGetJunkAttribute(TupleTableSlot *slot, AttrNumber attno,
160 bool *isNull);
161 extern TupleTableSlot *ExecFilterJunk(JunkFilter *junkfilter,
162 TupleTableSlot *slot);
163
164
165 /*
166 * prototypes from functions in execMain.c
167 */
168 extern void ExecutorStart(QueryDesc *queryDesc, int eflags);
169 extern void standard_ExecutorStart(QueryDesc *queryDesc, int eflags);
170 extern void ExecutorRun(QueryDesc *queryDesc,
171 ScanDirection direction, uint64 count, bool execute_once);
172 extern void standard_ExecutorRun(QueryDesc *queryDesc,
173 ScanDirection direction, uint64 count, bool execute_once);
174 extern void ExecutorFinish(QueryDesc *queryDesc);
175 extern void standard_ExecutorFinish(QueryDesc *queryDesc);
176 extern void ExecutorEnd(QueryDesc *queryDesc);
177 extern void standard_ExecutorEnd(QueryDesc *queryDesc);
178 extern void ExecutorRewind(QueryDesc *queryDesc);
179 extern bool ExecCheckRTPerms(List *rangeTable, bool ereport_on_violation);
180 extern void CheckValidResultRel(ResultRelInfo *resultRelInfo, CmdType operation);
181 extern void InitResultRelInfo(ResultRelInfo *resultRelInfo,
182 Relation resultRelationDesc,
183 Index resultRelationIndex,
184 Relation partition_root,
185 int instrument_options);
186 extern ResultRelInfo *ExecGetTriggerResultRel(EState *estate, Oid relid);
187 extern void ExecCleanUpTriggerState(EState *estate);
188 extern bool ExecContextForcesOids(PlanState *planstate, bool *hasoids);
189 extern void ExecConstraints(ResultRelInfo *resultRelInfo,
190 TupleTableSlot *slot, EState *estate);
191 extern void ExecWithCheckOptions(WCOKind kind, ResultRelInfo *resultRelInfo,
192 TupleTableSlot *slot, EState *estate);
193 extern LockTupleMode ExecUpdateLockMode(EState *estate, ResultRelInfo *relinfo);
194 extern ExecRowMark *ExecFindRowMark(EState *estate, Index rti, bool missing_ok);
195 extern ExecAuxRowMark *ExecBuildAuxRowMark(ExecRowMark *erm, List *targetlist);
196 extern TupleTableSlot *EvalPlanQual(EState *estate, EPQState *epqstate,
197 Relation relation, Index rti, int lockmode,
198 ItemPointer tid, TransactionId priorXmax);
199 extern HeapTuple EvalPlanQualFetch(EState *estate, Relation relation,
200 int lockmode, LockWaitPolicy wait_policy, ItemPointer tid,
201 TransactionId priorXmax);
202 extern void EvalPlanQualInit(EPQState *epqstate, EState *estate,
203 Plan *subplan, List *auxrowmarks, int epqParam);
204 extern void EvalPlanQualSetPlan(EPQState *epqstate,
205 Plan *subplan, List *auxrowmarks);
206 extern void EvalPlanQualSetTuple(EPQState *epqstate, Index rti,
207 HeapTuple tuple);
208 extern HeapTuple EvalPlanQualGetTuple(EPQState *epqstate, Index rti);
209 extern void ExecSetupPartitionTupleRouting(Relation rel,
210 Index resultRTindex,
211 EState *estate,
212 PartitionDispatch **pd,
213 ResultRelInfo **partitions,
214 TupleConversionMap ***tup_conv_maps,
215 TupleTableSlot **partition_tuple_slot,
216 int *num_parted, int *num_partitions);
217 extern int ExecFindPartition(ResultRelInfo *resultRelInfo,
218 PartitionDispatch *pd,
219 TupleTableSlot *slot,
220 EState *estate);
221
222 #define EvalPlanQualSetSlot(epqstate, slot) ((epqstate)->origslot = (slot))
223 extern void EvalPlanQualFetchRowMarks(EPQState *epqstate);
224 extern TupleTableSlot *EvalPlanQualNext(EPQState *epqstate);
225 extern void EvalPlanQualBegin(EPQState *epqstate, EState *parentestate);
226 extern void EvalPlanQualEnd(EPQState *epqstate);
227
228 /*
229 * functions in execProcnode.c
230 */
231 extern PlanState *ExecInitNode(Plan *node, EState *estate, int eflags);
232 extern Node *MultiExecProcNode(PlanState *node);
233 extern void ExecEndNode(PlanState *node);
234 extern bool ExecShutdownNode(PlanState *node);
235
236
237 /* ----------------------------------------------------------------
238 * ExecProcNode
239 *
240 * Execute the given node to return a(nother) tuple.
241 * ----------------------------------------------------------------
242 */
243 #ifndef FRONTEND
244 static inline TupleTableSlot *
ExecProcNode(PlanState * node)245 ExecProcNode(PlanState *node)
246 {
247 if (node->chgParam != NULL) /* something changed? */
248 ExecReScan(node); /* let ReScan handle this */
249
250 return node->ExecProcNode(node);
251 }
252 #endif
253
254 /*
255 * prototypes from functions in execExpr.c
256 */
257 extern ExprState *ExecInitExpr(Expr *node, PlanState *parent);
258 extern ExprState *ExecInitQual(List *qual, PlanState *parent);
259 extern ExprState *ExecInitCheck(List *qual, PlanState *parent);
260 extern List *ExecInitExprList(List *nodes, PlanState *parent);
261 extern ProjectionInfo *ExecBuildProjectionInfo(List *targetList,
262 ExprContext *econtext,
263 TupleTableSlot *slot,
264 PlanState *parent,
265 TupleDesc inputDesc);
266 extern ExprState *ExecPrepareExpr(Expr *node, EState *estate);
267 extern ExprState *ExecPrepareQual(List *qual, EState *estate);
268 extern ExprState *ExecPrepareCheck(List *qual, EState *estate);
269 extern List *ExecPrepareExprList(List *nodes, EState *estate);
270
271 /*
272 * ExecEvalExpr
273 *
274 * Evaluate expression identified by "state" in the execution context
275 * given by "econtext". *isNull is set to the is-null flag for the result,
276 * and the Datum value is the function result.
277 *
278 * The caller should already have switched into the temporary memory
279 * context econtext->ecxt_per_tuple_memory. The convenience entry point
280 * ExecEvalExprSwitchContext() is provided for callers who don't prefer to
281 * do the switch in an outer loop.
282 */
283 #ifndef FRONTEND
284 static inline Datum
ExecEvalExpr(ExprState * state,ExprContext * econtext,bool * isNull)285 ExecEvalExpr(ExprState *state,
286 ExprContext *econtext,
287 bool *isNull)
288 {
289 return (*state->evalfunc) (state, econtext, isNull);
290 }
291 #endif
292
293 /*
294 * ExecEvalExprSwitchContext
295 *
296 * Same as ExecEvalExpr, but get into the right allocation context explicitly.
297 */
298 #ifndef FRONTEND
299 static inline Datum
ExecEvalExprSwitchContext(ExprState * state,ExprContext * econtext,bool * isNull)300 ExecEvalExprSwitchContext(ExprState *state,
301 ExprContext *econtext,
302 bool *isNull)
303 {
304 Datum retDatum;
305 MemoryContext oldContext;
306
307 oldContext = MemoryContextSwitchTo(econtext->ecxt_per_tuple_memory);
308 retDatum = (*state->evalfunc) (state, econtext, isNull);
309 MemoryContextSwitchTo(oldContext);
310 return retDatum;
311 }
312 #endif
313
314 /*
315 * ExecProject
316 *
317 * Projects a tuple based on projection info and stores it in the slot passed
318 * to ExecBuildProjectInfo().
319 *
320 * Note: the result is always a virtual tuple; therefore it may reference
321 * the contents of the exprContext's scan tuples and/or temporary results
322 * constructed in the exprContext. If the caller wishes the result to be
323 * valid longer than that data will be valid, he must call ExecMaterializeSlot
324 * on the result slot.
325 */
326 #ifndef FRONTEND
327 static inline TupleTableSlot *
ExecProject(ProjectionInfo * projInfo)328 ExecProject(ProjectionInfo *projInfo)
329 {
330 ExprContext *econtext = projInfo->pi_exprContext;
331 ExprState *state = &projInfo->pi_state;
332 TupleTableSlot *slot = state->resultslot;
333 bool isnull;
334
335 /*
336 * Clear any former contents of the result slot. This makes it safe for
337 * us to use the slot's Datum/isnull arrays as workspace.
338 */
339 ExecClearTuple(slot);
340
341 /* Run the expression, discarding scalar result from the last column. */
342 (void) ExecEvalExprSwitchContext(state, econtext, &isnull);
343
344 /*
345 * Successfully formed a result row. Mark the result slot as containing a
346 * valid virtual tuple (inlined version of ExecStoreVirtualTuple()).
347 */
348 slot->tts_isempty = false;
349 slot->tts_nvalid = slot->tts_tupleDescriptor->natts;
350
351 return slot;
352 }
353 #endif
354
355 /*
356 * ExecQual - evaluate a qual prepared with ExecInitQual (possibly via
357 * ExecPrepareQual). Returns true if qual is satisfied, else false.
358 *
359 * Note: ExecQual used to have a third argument "resultForNull". The
360 * behavior of this function now corresponds to resultForNull == false.
361 * If you want the resultForNull == true behavior, see ExecCheck.
362 */
363 #ifndef FRONTEND
364 static inline bool
ExecQual(ExprState * state,ExprContext * econtext)365 ExecQual(ExprState *state, ExprContext *econtext)
366 {
367 Datum ret;
368 bool isnull;
369
370 /* short-circuit (here and in ExecInitQual) for empty restriction list */
371 if (state == NULL)
372 return true;
373
374 /* verify that expression was compiled using ExecInitQual */
375 Assert(state->flags & EEO_FLAG_IS_QUAL);
376
377 ret = ExecEvalExprSwitchContext(state, econtext, &isnull);
378
379 /* EEOP_QUAL should never return NULL */
380 Assert(!isnull);
381
382 return DatumGetBool(ret);
383 }
384 #endif
385
386 extern bool ExecCheck(ExprState *state, ExprContext *context);
387
388 /*
389 * prototypes from functions in execSRF.c
390 */
391 extern SetExprState *ExecInitTableFunctionResult(Expr *expr,
392 ExprContext *econtext, PlanState *parent);
393 extern Tuplestorestate *ExecMakeTableFunctionResult(SetExprState *setexpr,
394 ExprContext *econtext,
395 MemoryContext argContext,
396 TupleDesc expectedDesc,
397 bool randomAccess);
398 extern SetExprState *ExecInitFunctionResultSet(Expr *expr,
399 ExprContext *econtext, PlanState *parent);
400 extern Datum ExecMakeFunctionResultSet(SetExprState *fcache,
401 ExprContext *econtext,
402 bool *isNull,
403 ExprDoneCond *isDone);
404
405 /*
406 * prototypes from functions in execScan.c
407 */
408 typedef TupleTableSlot *(*ExecScanAccessMtd) (ScanState *node);
409 typedef bool (*ExecScanRecheckMtd) (ScanState *node, TupleTableSlot *slot);
410
411 extern TupleTableSlot *ExecScan(ScanState *node, ExecScanAccessMtd accessMtd,
412 ExecScanRecheckMtd recheckMtd);
413 extern void ExecAssignScanProjectionInfo(ScanState *node);
414 extern void ExecAssignScanProjectionInfoWithVarno(ScanState *node, Index varno);
415 extern void ExecScanReScan(ScanState *node);
416
417 /*
418 * prototypes from functions in execTuples.c
419 */
420 extern void ExecInitResultTupleSlot(EState *estate, PlanState *planstate);
421 extern void ExecInitScanTupleSlot(EState *estate, ScanState *scanstate);
422 extern TupleTableSlot *ExecInitExtraTupleSlot(EState *estate);
423 extern TupleTableSlot *ExecInitNullTupleSlot(EState *estate,
424 TupleDesc tupType);
425 extern TupleDesc ExecTypeFromTL(List *targetList, bool hasoid);
426 extern TupleDesc ExecCleanTypeFromTL(List *targetList, bool hasoid);
427 extern TupleDesc ExecTypeFromExprList(List *exprList);
428 extern void ExecTypeSetColNames(TupleDesc typeInfo, List *namesList);
429 extern void UpdateChangedParamSet(PlanState *node, Bitmapset *newchg);
430
431 typedef struct TupOutputState
432 {
433 TupleTableSlot *slot;
434 DestReceiver *dest;
435 } TupOutputState;
436
437 extern TupOutputState *begin_tup_output_tupdesc(DestReceiver *dest,
438 TupleDesc tupdesc);
439 extern void do_tup_output(TupOutputState *tstate, Datum *values, bool *isnull);
440 extern void do_text_output_multiline(TupOutputState *tstate, const char *txt);
441 extern void end_tup_output(TupOutputState *tstate);
442
443 /*
444 * Write a single line of text given as a C string.
445 *
446 * Should only be used with a single-TEXT-attribute tupdesc.
447 */
448 #define do_text_output_oneline(tstate, str_to_emit) \
449 do { \
450 Datum values_[1]; \
451 bool isnull_[1]; \
452 values_[0] = PointerGetDatum(cstring_to_text(str_to_emit)); \
453 isnull_[0] = false; \
454 do_tup_output(tstate, values_, isnull_); \
455 pfree(DatumGetPointer(values_[0])); \
456 } while (0)
457
458
459 /*
460 * prototypes from functions in execUtils.c
461 */
462 extern EState *CreateExecutorState(void);
463 extern void FreeExecutorState(EState *estate);
464 extern ExprContext *CreateExprContext(EState *estate);
465 extern ExprContext *CreateStandaloneExprContext(void);
466 extern void FreeExprContext(ExprContext *econtext, bool isCommit);
467 extern void ReScanExprContext(ExprContext *econtext);
468
469 #define ResetExprContext(econtext) \
470 MemoryContextReset((econtext)->ecxt_per_tuple_memory)
471
472 extern ExprContext *MakePerTupleExprContext(EState *estate);
473
474 /* Get an EState's per-output-tuple exprcontext, making it if first use */
475 #define GetPerTupleExprContext(estate) \
476 ((estate)->es_per_tuple_exprcontext ? \
477 (estate)->es_per_tuple_exprcontext : \
478 MakePerTupleExprContext(estate))
479
480 #define GetPerTupleMemoryContext(estate) \
481 (GetPerTupleExprContext(estate)->ecxt_per_tuple_memory)
482
483 /* Reset an EState's per-output-tuple exprcontext, if one's been created */
484 #define ResetPerTupleExprContext(estate) \
485 do { \
486 if ((estate)->es_per_tuple_exprcontext) \
487 ResetExprContext((estate)->es_per_tuple_exprcontext); \
488 } while (0)
489
490 extern void ExecAssignExprContext(EState *estate, PlanState *planstate);
491 extern void ExecAssignResultType(PlanState *planstate, TupleDesc tupDesc);
492 extern void ExecAssignResultTypeFromTL(PlanState *planstate);
493 extern TupleDesc ExecGetResultType(PlanState *planstate);
494 extern void ExecAssignProjectionInfo(PlanState *planstate,
495 TupleDesc inputDesc);
496 extern void ExecFreeExprContext(PlanState *planstate);
497 extern void ExecAssignScanType(ScanState *scanstate, TupleDesc tupDesc);
498 extern void ExecAssignScanTypeFromOuterPlan(ScanState *scanstate);
499
500 extern bool ExecRelationIsTargetRelation(EState *estate, Index scanrelid);
501
502 extern Relation ExecOpenScanRelation(EState *estate, Index scanrelid, int eflags);
503 extern void ExecCloseScanRelation(Relation scanrel);
504
505 extern int executor_errposition(EState *estate, int location);
506
507 extern void RegisterExprContextCallback(ExprContext *econtext,
508 ExprContextCallbackFunction function,
509 Datum arg);
510 extern void UnregisterExprContextCallback(ExprContext *econtext,
511 ExprContextCallbackFunction function,
512 Datum arg);
513
514 extern void ExecLockNonLeafAppendTables(List *partitioned_rels, EState *estate);
515
516 extern Datum GetAttributeByName(HeapTupleHeader tuple, const char *attname,
517 bool *isNull);
518 extern Datum GetAttributeByNum(HeapTupleHeader tuple, AttrNumber attrno,
519 bool *isNull);
520
521 extern int ExecTargetListLength(List *targetlist);
522 extern int ExecCleanTargetListLength(List *targetlist);
523
524 /*
525 * prototypes from functions in execIndexing.c
526 */
527 extern void ExecOpenIndices(ResultRelInfo *resultRelInfo, bool speculative);
528 extern void ExecCloseIndices(ResultRelInfo *resultRelInfo);
529 extern List *ExecInsertIndexTuples(TupleTableSlot *slot, ItemPointer tupleid,
530 EState *estate, bool noDupErr, bool *specConflict,
531 List *arbiterIndexes);
532 extern bool ExecCheckIndexConstraints(TupleTableSlot *slot, EState *estate,
533 ItemPointer conflictTid, List *arbiterIndexes);
534 extern void check_exclusion_constraint(Relation heap, Relation index,
535 IndexInfo *indexInfo,
536 ItemPointer tupleid,
537 Datum *values, bool *isnull,
538 EState *estate, bool newIndex);
539
540 /*
541 * prototypes from functions in execReplication.c
542 */
543 extern bool RelationFindReplTupleByIndex(Relation rel, Oid idxoid,
544 LockTupleMode lockmode,
545 TupleTableSlot *searchslot,
546 TupleTableSlot *outslot);
547 extern bool RelationFindReplTupleSeq(Relation rel, LockTupleMode lockmode,
548 TupleTableSlot *searchslot, TupleTableSlot *outslot);
549
550 extern void ExecSimpleRelationInsert(EState *estate, TupleTableSlot *slot);
551 extern void ExecSimpleRelationUpdate(EState *estate, EPQState *epqstate,
552 TupleTableSlot *searchslot, TupleTableSlot *slot);
553 extern void ExecSimpleRelationDelete(EState *estate, EPQState *epqstate,
554 TupleTableSlot *searchslot);
555 extern void CheckCmdReplicaIdentity(Relation rel, CmdType cmd);
556
557 extern void CheckSubscriptionRelkind(char relkind, const char *nspname,
558 const char *relname);
559
560 #endif /* EXECUTOR_H */
561