Line data Source code
1 : /*-------------------------------------------------------------------------
2 : *
3 : * executor.h
4 : * support for the POSTGRES executor module
5 : *
6 : *
7 : * Portions Copyright (c) 1996-2020, 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 "executor/execdesc.h"
18 : #include "fmgr.h"
19 : #include "nodes/lockoptions.h"
20 : #include "nodes/parsenodes.h"
21 : #include "utils/memutils.h"
22 :
23 :
24 : /*
25 : * The "eflags" argument to ExecutorStart and the various ExecInitNode
26 : * routines is a bitwise OR of the following flag bits, which tell the
27 : * called plan node what to expect. Note that the flags will get modified
28 : * as they are passed down the plan tree, since an upper node may require
29 : * functionality in its subnode not demanded of the plan as a whole
30 : * (example: MergeJoin requires mark/restore capability in its inner input),
31 : * or an upper node may shield its input from some functionality requirement
32 : * (example: Materialize shields its input from needing to do backward scan).
33 : *
34 : * EXPLAIN_ONLY indicates that the plan tree is being initialized just so
35 : * EXPLAIN can print it out; it will not be run. Hence, no side-effects
36 : * of startup should occur. However, error checks (such as permission checks)
37 : * should be performed.
38 : *
39 : * REWIND indicates that the plan node should try to efficiently support
40 : * rescans without parameter changes. (Nodes must support ExecReScan calls
41 : * in any case, but if this flag was not given, they are at liberty to do it
42 : * through complete recalculation. Note that a parameter change forces a
43 : * full recalculation in any case.)
44 : *
45 : * BACKWARD indicates that the plan node must respect the es_direction flag.
46 : * When this is not passed, the plan node will only be run forwards.
47 : *
48 : * MARK indicates that the plan node must support Mark/Restore calls.
49 : * When this is not passed, no Mark/Restore will occur.
50 : *
51 : * SKIP_TRIGGERS tells ExecutorStart/ExecutorFinish to skip calling
52 : * AfterTriggerBeginQuery/AfterTriggerEndQuery. This does not necessarily
53 : * mean that the plan can't queue any AFTER triggers; just that the caller
54 : * is responsible for there being a trigger context for them to be queued in.
55 : */
56 : #define EXEC_FLAG_EXPLAIN_ONLY 0x0001 /* EXPLAIN, no ANALYZE */
57 : #define EXEC_FLAG_REWIND 0x0002 /* need efficient rescan */
58 : #define EXEC_FLAG_BACKWARD 0x0004 /* need backward scan */
59 : #define EXEC_FLAG_MARK 0x0008 /* need mark/restore */
60 : #define EXEC_FLAG_SKIP_TRIGGERS 0x0010 /* skip AfterTrigger calls */
61 : #define EXEC_FLAG_WITH_NO_DATA 0x0020 /* rel scannability doesn't matter */
62 :
63 :
64 : /* Hook for plugins to get control in ExecutorStart() */
65 : typedef void (*ExecutorStart_hook_type) (QueryDesc *queryDesc, int eflags);
66 : extern PGDLLIMPORT ExecutorStart_hook_type ExecutorStart_hook;
67 :
68 : /* Hook for plugins to get control in ExecutorRun() */
69 : typedef void (*ExecutorRun_hook_type) (QueryDesc *queryDesc,
70 : ScanDirection direction,
71 : uint64 count,
72 : bool execute_once);
73 : extern PGDLLIMPORT ExecutorRun_hook_type ExecutorRun_hook;
74 :
75 : /* Hook for plugins to get control in ExecutorFinish() */
76 : typedef void (*ExecutorFinish_hook_type) (QueryDesc *queryDesc);
77 : extern PGDLLIMPORT ExecutorFinish_hook_type ExecutorFinish_hook;
78 :
79 : /* Hook for plugins to get control in ExecutorEnd() */
80 : typedef void (*ExecutorEnd_hook_type) (QueryDesc *queryDesc);
81 : extern PGDLLIMPORT ExecutorEnd_hook_type ExecutorEnd_hook;
82 :
83 : /* Hook for plugins to get control in ExecCheckRTPerms() */
84 : typedef bool (*ExecutorCheckPerms_hook_type) (List *, bool);
85 : extern PGDLLIMPORT ExecutorCheckPerms_hook_type ExecutorCheckPerms_hook;
86 :
87 :
88 : /*
89 : * prototypes from functions in execAmi.c
90 : */
91 : struct Path; /* avoid including pathnodes.h here */
92 :
93 : extern void ExecReScan(PlanState *node);
94 : extern void ExecMarkPos(PlanState *node);
95 : extern void ExecRestrPos(PlanState *node);
96 : extern bool ExecSupportsMarkRestore(struct Path *pathnode);
97 : extern bool ExecSupportsBackwardScan(Plan *node);
98 : extern bool ExecMaterializesOutput(NodeTag plantype);
99 :
100 : /*
101 : * prototypes from functions in execCurrent.c
102 : */
103 : extern bool execCurrentOf(CurrentOfExpr *cexpr,
104 : ExprContext *econtext,
105 : Oid table_oid,
106 : ItemPointer current_tid);
107 :
108 : /*
109 : * prototypes from functions in execGrouping.c
110 : */
111 : extern ExprState *execTuplesMatchPrepare(TupleDesc desc,
112 : int numCols,
113 : const AttrNumber *keyColIdx,
114 : const Oid *eqOperators,
115 : const Oid *collations,
116 : PlanState *parent);
117 : extern void execTuplesHashPrepare(int numCols,
118 : const Oid *eqOperators,
119 : Oid **eqFuncOids,
120 : FmgrInfo **hashFunctions);
121 : extern TupleHashTable BuildTupleHashTable(PlanState *parent,
122 : TupleDesc inputDesc,
123 : int numCols, AttrNumber *keyColIdx,
124 : const Oid *eqfuncoids,
125 : FmgrInfo *hashfunctions,
126 : Oid *collations,
127 : long nbuckets, Size additionalsize,
128 : MemoryContext tablecxt,
129 : MemoryContext tempcxt, bool use_variable_hash_iv);
130 : extern TupleHashTable BuildTupleHashTableExt(PlanState *parent,
131 : TupleDesc inputDesc,
132 : int numCols, AttrNumber *keyColIdx,
133 : const Oid *eqfuncoids,
134 : FmgrInfo *hashfunctions,
135 : Oid *collations,
136 : long nbuckets, Size additionalsize,
137 : MemoryContext metacxt,
138 : MemoryContext tablecxt,
139 : MemoryContext tempcxt, bool use_variable_hash_iv);
140 : extern TupleHashEntry LookupTupleHashEntry(TupleHashTable hashtable,
141 : TupleTableSlot *slot,
142 : bool *isnew);
143 : extern uint32 TupleHashTableHash(TupleHashTable hashtable,
144 : TupleTableSlot *slot);
145 : extern TupleHashEntry LookupTupleHashEntryHash(TupleHashTable hashtable,
146 : TupleTableSlot *slot,
147 : bool *isnew, uint32 hash);
148 : extern TupleHashEntry FindTupleHashEntry(TupleHashTable hashtable,
149 : TupleTableSlot *slot,
150 : ExprState *eqcomp,
151 : FmgrInfo *hashfunctions);
152 : extern void ResetTupleHashTable(TupleHashTable hashtable);
153 :
154 : /*
155 : * prototypes from functions in execJunk.c
156 : */
157 : extern JunkFilter *ExecInitJunkFilter(List *targetList,
158 : TupleTableSlot *slot);
159 : extern JunkFilter *ExecInitJunkFilterConversion(List *targetList,
160 : TupleDesc cleanTupType,
161 : TupleTableSlot *slot);
162 : extern AttrNumber ExecFindJunkAttribute(JunkFilter *junkfilter,
163 : const char *attrName);
164 : extern AttrNumber ExecFindJunkAttributeInTlist(List *targetlist,
165 : const char *attrName);
166 : extern Datum ExecGetJunkAttribute(TupleTableSlot *slot, AttrNumber attno,
167 : bool *isNull);
168 : extern TupleTableSlot *ExecFilterJunk(JunkFilter *junkfilter,
169 : TupleTableSlot *slot);
170 :
171 :
172 : /*
173 : * prototypes from functions in execMain.c
174 : */
175 : extern void ExecutorStart(QueryDesc *queryDesc, int eflags);
176 : extern void standard_ExecutorStart(QueryDesc *queryDesc, int eflags);
177 : extern void ExecutorRun(QueryDesc *queryDesc,
178 : ScanDirection direction, uint64 count, bool execute_once);
179 : extern void standard_ExecutorRun(QueryDesc *queryDesc,
180 : ScanDirection direction, uint64 count, bool execute_once);
181 : extern void ExecutorFinish(QueryDesc *queryDesc);
182 : extern void standard_ExecutorFinish(QueryDesc *queryDesc);
183 : extern void ExecutorEnd(QueryDesc *queryDesc);
184 : extern void standard_ExecutorEnd(QueryDesc *queryDesc);
185 : extern void ExecutorRewind(QueryDesc *queryDesc);
186 : extern bool ExecCheckRTPerms(List *rangeTable, bool ereport_on_violation);
187 : extern void CheckValidResultRel(ResultRelInfo *resultRelInfo, CmdType operation);
188 : extern void InitResultRelInfo(ResultRelInfo *resultRelInfo,
189 : Relation resultRelationDesc,
190 : Index resultRelationIndex,
191 : Relation partition_root,
192 : int instrument_options);
193 : extern ResultRelInfo *ExecGetTriggerResultRel(EState *estate, Oid relid);
194 : extern void ExecCleanUpTriggerState(EState *estate);
195 : extern void ExecConstraints(ResultRelInfo *resultRelInfo,
196 : TupleTableSlot *slot, EState *estate);
197 : extern bool ExecPartitionCheck(ResultRelInfo *resultRelInfo,
198 : TupleTableSlot *slot, EState *estate, bool emitError);
199 : extern void ExecPartitionCheckEmitError(ResultRelInfo *resultRelInfo,
200 : TupleTableSlot *slot, EState *estate);
201 : extern void ExecWithCheckOptions(WCOKind kind, ResultRelInfo *resultRelInfo,
202 : TupleTableSlot *slot, EState *estate);
203 : extern LockTupleMode ExecUpdateLockMode(EState *estate, ResultRelInfo *relinfo);
204 : extern ExecRowMark *ExecFindRowMark(EState *estate, Index rti, bool missing_ok);
205 : extern ExecAuxRowMark *ExecBuildAuxRowMark(ExecRowMark *erm, List *targetlist);
206 : extern TupleTableSlot *EvalPlanQual(EPQState *epqstate, Relation relation,
207 : Index rti, TupleTableSlot *testslot);
208 : extern void EvalPlanQualInit(EPQState *epqstate, EState *parentestate,
209 : Plan *subplan, List *auxrowmarks, int epqParam);
210 : extern void EvalPlanQualSetPlan(EPQState *epqstate,
211 : Plan *subplan, List *auxrowmarks);
212 : extern TupleTableSlot *EvalPlanQualSlot(EPQState *epqstate,
213 : Relation relation, Index rti);
214 :
215 : #define EvalPlanQualSetSlot(epqstate, slot) ((epqstate)->origslot = (slot))
216 : extern bool EvalPlanQualFetchRowMark(EPQState *epqstate, Index rti, TupleTableSlot *slot);
217 : extern TupleTableSlot *EvalPlanQualNext(EPQState *epqstate);
218 : extern void EvalPlanQualBegin(EPQState *epqstate);
219 : extern void EvalPlanQualEnd(EPQState *epqstate);
220 :
221 : /*
222 : * functions in execProcnode.c
223 : */
224 : extern PlanState *ExecInitNode(Plan *node, EState *estate, int eflags);
225 : extern void ExecSetExecProcNode(PlanState *node, ExecProcNodeMtd function);
226 : extern Node *MultiExecProcNode(PlanState *node);
227 : extern void ExecEndNode(PlanState *node);
228 : extern bool ExecShutdownNode(PlanState *node);
229 : extern void ExecSetTupleBound(int64 tuples_needed, PlanState *child_node);
230 :
231 :
232 : /* ----------------------------------------------------------------
233 : * ExecProcNode
234 : *
235 : * Execute the given node to return a(nother) tuple.
236 : * ----------------------------------------------------------------
237 : */
238 : #ifndef FRONTEND
239 : static inline TupleTableSlot *
240 84501238 : ExecProcNode(PlanState *node)
241 : {
242 84501238 : if (node->chgParam != NULL) /* something changed? */
243 2684464 : ExecReScan(node); /* let ReScan handle this */
244 :
245 84501238 : return node->ExecProcNode(node);
246 : }
247 : #endif
248 :
249 : /*
250 : * prototypes from functions in execExpr.c
251 : */
252 : extern ExprState *ExecInitExpr(Expr *node, PlanState *parent);
253 : extern ExprState *ExecInitExprWithParams(Expr *node, ParamListInfo ext_params);
254 : extern ExprState *ExecInitQual(List *qual, PlanState *parent);
255 : extern ExprState *ExecInitCheck(List *qual, PlanState *parent);
256 : extern List *ExecInitExprList(List *nodes, PlanState *parent);
257 : extern ExprState *ExecBuildAggTrans(AggState *aggstate, struct AggStatePerPhaseData *phase,
258 : bool doSort, bool doHash, bool nullcheck);
259 : extern ExprState *ExecBuildGroupingEqual(TupleDesc ldesc, TupleDesc rdesc,
260 : const TupleTableSlotOps *lops, const TupleTableSlotOps *rops,
261 : int numCols,
262 : const AttrNumber *keyColIdx,
263 : const Oid *eqfunctions,
264 : const Oid *collations,
265 : PlanState *parent);
266 : extern ProjectionInfo *ExecBuildProjectionInfo(List *targetList,
267 : ExprContext *econtext,
268 : TupleTableSlot *slot,
269 : PlanState *parent,
270 : TupleDesc inputDesc);
271 : extern ExprState *ExecPrepareExpr(Expr *node, EState *estate);
272 : extern ExprState *ExecPrepareQual(List *qual, EState *estate);
273 : extern ExprState *ExecPrepareCheck(List *qual, EState *estate);
274 : extern List *ExecPrepareExprList(List *nodes, EState *estate);
275 :
276 : /*
277 : * ExecEvalExpr
278 : *
279 : * Evaluate expression identified by "state" in the execution context
280 : * given by "econtext". *isNull is set to the is-null flag for the result,
281 : * and the Datum value is the function result.
282 : *
283 : * The caller should already have switched into the temporary memory
284 : * context econtext->ecxt_per_tuple_memory. The convenience entry point
285 : * ExecEvalExprSwitchContext() is provided for callers who don't prefer to
286 : * do the switch in an outer loop.
287 : */
288 : #ifndef FRONTEND
289 : static inline Datum
290 26400798 : ExecEvalExpr(ExprState *state,
291 : ExprContext *econtext,
292 : bool *isNull)
293 : {
294 26400798 : return state->evalfunc(state, econtext, isNull);
295 : }
296 : #endif
297 :
298 : /*
299 : * ExecEvalExprSwitchContext
300 : *
301 : * Same as ExecEvalExpr, but get into the right allocation context explicitly.
302 : */
303 : #ifndef FRONTEND
304 : static inline Datum
305 117797126 : ExecEvalExprSwitchContext(ExprState *state,
306 : ExprContext *econtext,
307 : bool *isNull)
308 : {
309 : Datum retDatum;
310 : MemoryContext oldContext;
311 :
312 117797126 : oldContext = MemoryContextSwitchTo(econtext->ecxt_per_tuple_memory);
313 117797126 : retDatum = state->evalfunc(state, econtext, isNull);
314 117786734 : MemoryContextSwitchTo(oldContext);
315 117786734 : return retDatum;
316 : }
317 : #endif
318 :
319 : /*
320 : * ExecProject
321 : *
322 : * Projects a tuple based on projection info and stores it in the slot passed
323 : * to ExecBuildProjectionInfo().
324 : *
325 : * Note: the result is always a virtual tuple; therefore it may reference
326 : * the contents of the exprContext's scan tuples and/or temporary results
327 : * constructed in the exprContext. If the caller wishes the result to be
328 : * valid longer than that data will be valid, he must call ExecMaterializeSlot
329 : * on the result slot.
330 : */
331 : #ifndef FRONTEND
332 : static inline TupleTableSlot *
333 44304036 : ExecProject(ProjectionInfo *projInfo)
334 : {
335 44304036 : ExprContext *econtext = projInfo->pi_exprContext;
336 44304036 : ExprState *state = &projInfo->pi_state;
337 44304036 : TupleTableSlot *slot = state->resultslot;
338 : bool isnull;
339 :
340 : /*
341 : * Clear any former contents of the result slot. This makes it safe for
342 : * us to use the slot's Datum/isnull arrays as workspace.
343 : */
344 44304036 : ExecClearTuple(slot);
345 :
346 : /* Run the expression, discarding scalar result from the last column. */
347 44304036 : (void) ExecEvalExprSwitchContext(state, econtext, &isnull);
348 :
349 : /*
350 : * Successfully formed a result row. Mark the result slot as containing a
351 : * valid virtual tuple (inlined version of ExecStoreVirtualTuple()).
352 : */
353 44295158 : slot->tts_flags &= ~TTS_FLAG_EMPTY;
354 44295158 : slot->tts_nvalid = slot->tts_tupleDescriptor->natts;
355 :
356 44295158 : return slot;
357 : }
358 : #endif
359 :
360 : /*
361 : * ExecQual - evaluate a qual prepared with ExecInitQual (possibly via
362 : * ExecPrepareQual). Returns true if qual is satisfied, else false.
363 : *
364 : * Note: ExecQual used to have a third argument "resultForNull". The
365 : * behavior of this function now corresponds to resultForNull == false.
366 : * If you want the resultForNull == true behavior, see ExecCheck.
367 : */
368 : #ifndef FRONTEND
369 : static inline bool
370 57435336 : ExecQual(ExprState *state, ExprContext *econtext)
371 : {
372 : Datum ret;
373 : bool isnull;
374 :
375 : /* short-circuit (here and in ExecInitQual) for empty restriction list */
376 57435336 : if (state == NULL)
377 3044160 : return true;
378 :
379 : /* verify that expression was compiled using ExecInitQual */
380 : Assert(state->flags & EEO_FLAG_IS_QUAL);
381 :
382 54391176 : ret = ExecEvalExprSwitchContext(state, econtext, &isnull);
383 :
384 : /* EEOP_QUAL should never return NULL */
385 : Assert(!isnull);
386 :
387 54391158 : return DatumGetBool(ret);
388 : }
389 : #endif
390 :
391 : /*
392 : * ExecQualAndReset() - evaluate qual with ExecQual() and reset expression
393 : * context.
394 : */
395 : #ifndef FRONTEND
396 : static inline bool
397 11020924 : ExecQualAndReset(ExprState *state, ExprContext *econtext)
398 : {
399 11020924 : bool ret = ExecQual(state, econtext);
400 :
401 : /* inline ResetExprContext, to avoid ordering issue in this file */
402 11020924 : MemoryContextReset(econtext->ecxt_per_tuple_memory);
403 11020924 : return ret;
404 : }
405 : #endif
406 :
407 : extern bool ExecCheck(ExprState *state, ExprContext *context);
408 :
409 : /*
410 : * prototypes from functions in execSRF.c
411 : */
412 : extern SetExprState *ExecInitTableFunctionResult(Expr *expr,
413 : ExprContext *econtext, PlanState *parent);
414 : extern Tuplestorestate *ExecMakeTableFunctionResult(SetExprState *setexpr,
415 : ExprContext *econtext,
416 : MemoryContext argContext,
417 : TupleDesc expectedDesc,
418 : bool randomAccess);
419 : extern SetExprState *ExecInitFunctionResultSet(Expr *expr,
420 : ExprContext *econtext, PlanState *parent);
421 : extern Datum ExecMakeFunctionResultSet(SetExprState *fcache,
422 : ExprContext *econtext,
423 : MemoryContext argContext,
424 : bool *isNull,
425 : ExprDoneCond *isDone);
426 :
427 : /*
428 : * prototypes from functions in execScan.c
429 : */
430 : typedef TupleTableSlot *(*ExecScanAccessMtd) (ScanState *node);
431 : typedef bool (*ExecScanRecheckMtd) (ScanState *node, TupleTableSlot *slot);
432 :
433 : extern TupleTableSlot *ExecScan(ScanState *node, ExecScanAccessMtd accessMtd,
434 : ExecScanRecheckMtd recheckMtd);
435 : extern void ExecAssignScanProjectionInfo(ScanState *node);
436 : extern void ExecAssignScanProjectionInfoWithVarno(ScanState *node, Index varno);
437 : extern void ExecScanReScan(ScanState *node);
438 :
439 : /*
440 : * prototypes from functions in execTuples.c
441 : */
442 : extern void ExecInitResultTypeTL(PlanState *planstate);
443 : extern void ExecInitResultSlot(PlanState *planstate,
444 : const TupleTableSlotOps *tts_ops);
445 : extern void ExecInitResultTupleSlotTL(PlanState *planstate,
446 : const TupleTableSlotOps *tts_ops);
447 : extern void ExecInitScanTupleSlot(EState *estate, ScanState *scanstate,
448 : TupleDesc tupleDesc,
449 : const TupleTableSlotOps *tts_ops);
450 : extern TupleTableSlot *ExecInitExtraTupleSlot(EState *estate,
451 : TupleDesc tupledesc,
452 : const TupleTableSlotOps *tts_ops);
453 : extern TupleTableSlot *ExecInitNullTupleSlot(EState *estate, TupleDesc tupType,
454 : const TupleTableSlotOps *tts_ops);
455 : extern TupleDesc ExecTypeFromTL(List *targetList);
456 : extern TupleDesc ExecCleanTypeFromTL(List *targetList);
457 : extern TupleDesc ExecTypeFromExprList(List *exprList);
458 : extern void ExecTypeSetColNames(TupleDesc typeInfo, List *namesList);
459 : extern void UpdateChangedParamSet(PlanState *node, Bitmapset *newchg);
460 :
461 : typedef struct TupOutputState
462 : {
463 : TupleTableSlot *slot;
464 : DestReceiver *dest;
465 : } TupOutputState;
466 :
467 : extern TupOutputState *begin_tup_output_tupdesc(DestReceiver *dest,
468 : TupleDesc tupdesc,
469 : const TupleTableSlotOps *tts_ops);
470 : extern void do_tup_output(TupOutputState *tstate, Datum *values, bool *isnull);
471 : extern void do_text_output_multiline(TupOutputState *tstate, const char *txt);
472 : extern void end_tup_output(TupOutputState *tstate);
473 :
474 : /*
475 : * Write a single line of text given as a C string.
476 : *
477 : * Should only be used with a single-TEXT-attribute tupdesc.
478 : */
479 : #define do_text_output_oneline(tstate, str_to_emit) \
480 : do { \
481 : Datum values_[1]; \
482 : bool isnull_[1]; \
483 : values_[0] = PointerGetDatum(cstring_to_text(str_to_emit)); \
484 : isnull_[0] = false; \
485 : do_tup_output(tstate, values_, isnull_); \
486 : pfree(DatumGetPointer(values_[0])); \
487 : } while (0)
488 :
489 :
490 : /*
491 : * prototypes from functions in execUtils.c
492 : */
493 : extern EState *CreateExecutorState(void);
494 : extern void FreeExecutorState(EState *estate);
495 : extern ExprContext *CreateExprContext(EState *estate);
496 : extern ExprContext *CreateWorkExprContext(EState *estate);
497 : extern ExprContext *CreateStandaloneExprContext(void);
498 : extern void FreeExprContext(ExprContext *econtext, bool isCommit);
499 : extern void ReScanExprContext(ExprContext *econtext);
500 :
501 : #define ResetExprContext(econtext) \
502 : MemoryContextReset((econtext)->ecxt_per_tuple_memory)
503 :
504 : extern ExprContext *MakePerTupleExprContext(EState *estate);
505 :
506 : /* Get an EState's per-output-tuple exprcontext, making it if first use */
507 : #define GetPerTupleExprContext(estate) \
508 : ((estate)->es_per_tuple_exprcontext ? \
509 : (estate)->es_per_tuple_exprcontext : \
510 : MakePerTupleExprContext(estate))
511 :
512 : #define GetPerTupleMemoryContext(estate) \
513 : (GetPerTupleExprContext(estate)->ecxt_per_tuple_memory)
514 :
515 : /* Reset an EState's per-output-tuple exprcontext, if one's been created */
516 : #define ResetPerTupleExprContext(estate) \
517 : do { \
518 : if ((estate)->es_per_tuple_exprcontext) \
519 : ResetExprContext((estate)->es_per_tuple_exprcontext); \
520 : } while (0)
521 :
522 : extern void ExecAssignExprContext(EState *estate, PlanState *planstate);
523 : extern TupleDesc ExecGetResultType(PlanState *planstate);
524 : extern const TupleTableSlotOps *ExecGetResultSlotOps(PlanState *planstate,
525 : bool *isfixed);
526 : extern void ExecAssignProjectionInfo(PlanState *planstate,
527 : TupleDesc inputDesc);
528 : extern void ExecConditionalAssignProjectionInfo(PlanState *planstate,
529 : TupleDesc inputDesc, Index varno);
530 : extern void ExecFreeExprContext(PlanState *planstate);
531 : extern void ExecAssignScanType(ScanState *scanstate, TupleDesc tupDesc);
532 : extern void ExecCreateScanSlotFromOuterPlan(EState *estate,
533 : ScanState *scanstate,
534 : const TupleTableSlotOps *tts_ops);
535 :
536 : extern bool ExecRelationIsTargetRelation(EState *estate, Index scanrelid);
537 :
538 : extern Relation ExecOpenScanRelation(EState *estate, Index scanrelid, int eflags);
539 :
540 : extern void ExecInitRangeTable(EState *estate, List *rangeTable);
541 :
542 : static inline RangeTblEntry *
543 460840 : exec_rt_fetch(Index rti, EState *estate)
544 : {
545 460840 : return (RangeTblEntry *) list_nth(estate->es_range_table, rti - 1);
546 : }
547 :
548 : extern Relation ExecGetRangeTableRelation(EState *estate, Index rti);
549 :
550 : extern int executor_errposition(EState *estate, int location);
551 :
552 : extern void RegisterExprContextCallback(ExprContext *econtext,
553 : ExprContextCallbackFunction function,
554 : Datum arg);
555 : extern void UnregisterExprContextCallback(ExprContext *econtext,
556 : ExprContextCallbackFunction function,
557 : Datum arg);
558 :
559 : extern Datum GetAttributeByName(HeapTupleHeader tuple, const char *attname,
560 : bool *isNull);
561 : extern Datum GetAttributeByNum(HeapTupleHeader tuple, AttrNumber attrno,
562 : bool *isNull);
563 :
564 : extern int ExecTargetListLength(List *targetlist);
565 : extern int ExecCleanTargetListLength(List *targetlist);
566 :
567 : extern TupleTableSlot *ExecGetTriggerOldSlot(EState *estate, ResultRelInfo *relInfo);
568 : extern TupleTableSlot *ExecGetTriggerNewSlot(EState *estate, ResultRelInfo *relInfo);
569 : extern TupleTableSlot *ExecGetReturningSlot(EState *estate, ResultRelInfo *relInfo);
570 :
571 : /*
572 : * prototypes from functions in execIndexing.c
573 : */
574 : extern void ExecOpenIndices(ResultRelInfo *resultRelInfo, bool speculative);
575 : extern void ExecCloseIndices(ResultRelInfo *resultRelInfo);
576 : extern List *ExecInsertIndexTuples(TupleTableSlot *slot, EState *estate, bool noDupErr,
577 : bool *specConflict, List *arbiterIndexes);
578 : extern bool ExecCheckIndexConstraints(TupleTableSlot *slot, EState *estate,
579 : ItemPointer conflictTid, List *arbiterIndexes);
580 : extern void check_exclusion_constraint(Relation heap, Relation index,
581 : IndexInfo *indexInfo,
582 : ItemPointer tupleid,
583 : Datum *values, bool *isnull,
584 : EState *estate, bool newIndex);
585 :
586 : /*
587 : * prototypes from functions in execReplication.c
588 : */
589 : extern bool RelationFindReplTupleByIndex(Relation rel, Oid idxoid,
590 : LockTupleMode lockmode,
591 : TupleTableSlot *searchslot,
592 : TupleTableSlot *outslot);
593 : extern bool RelationFindReplTupleSeq(Relation rel, LockTupleMode lockmode,
594 : TupleTableSlot *searchslot, TupleTableSlot *outslot);
595 :
596 : extern void ExecSimpleRelationInsert(EState *estate, TupleTableSlot *slot);
597 : extern void ExecSimpleRelationUpdate(EState *estate, EPQState *epqstate,
598 : TupleTableSlot *searchslot, TupleTableSlot *slot);
599 : extern void ExecSimpleRelationDelete(EState *estate, EPQState *epqstate,
600 : TupleTableSlot *searchslot);
601 : extern void CheckCmdReplicaIdentity(Relation rel, CmdType cmd);
602 :
603 : extern void CheckSubscriptionRelkind(char relkind, const char *nspname,
604 : const char *relname);
605 :
606 : #endif /* EXECUTOR_H */
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