Line data Source code
1 : /*-------------------------------------------------------------------------
2 : *
3 : * executor.h
4 : * support for the POSTGRES executor module
5 : *
6 : *
7 : * Portions Copyright (c) 1996-2019, 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 TupleHashEntry FindTupleHashEntry(TupleHashTable hashtable,
144 : TupleTableSlot *slot,
145 : ExprState *eqcomp,
146 : FmgrInfo *hashfunctions);
147 : extern void ResetTupleHashTable(TupleHashTable hashtable);
148 :
149 : /*
150 : * prototypes from functions in execJunk.c
151 : */
152 : extern JunkFilter *ExecInitJunkFilter(List *targetList,
153 : TupleTableSlot *slot);
154 : extern JunkFilter *ExecInitJunkFilterConversion(List *targetList,
155 : TupleDesc cleanTupType,
156 : TupleTableSlot *slot);
157 : extern AttrNumber ExecFindJunkAttribute(JunkFilter *junkfilter,
158 : const char *attrName);
159 : extern AttrNumber ExecFindJunkAttributeInTlist(List *targetlist,
160 : const char *attrName);
161 : extern Datum ExecGetJunkAttribute(TupleTableSlot *slot, AttrNumber attno,
162 : bool *isNull);
163 : extern TupleTableSlot *ExecFilterJunk(JunkFilter *junkfilter,
164 : TupleTableSlot *slot);
165 :
166 :
167 : /*
168 : * prototypes from functions in execMain.c
169 : */
170 : extern void ExecutorStart(QueryDesc *queryDesc, int eflags);
171 : extern void standard_ExecutorStart(QueryDesc *queryDesc, int eflags);
172 : extern void ExecutorRun(QueryDesc *queryDesc,
173 : ScanDirection direction, uint64 count, bool execute_once);
174 : extern void standard_ExecutorRun(QueryDesc *queryDesc,
175 : ScanDirection direction, uint64 count, bool execute_once);
176 : extern void ExecutorFinish(QueryDesc *queryDesc);
177 : extern void standard_ExecutorFinish(QueryDesc *queryDesc);
178 : extern void ExecutorEnd(QueryDesc *queryDesc);
179 : extern void standard_ExecutorEnd(QueryDesc *queryDesc);
180 : extern void ExecutorRewind(QueryDesc *queryDesc);
181 : extern bool ExecCheckRTPerms(List *rangeTable, bool ereport_on_violation);
182 : extern void CheckValidResultRel(ResultRelInfo *resultRelInfo, CmdType operation);
183 : extern void InitResultRelInfo(ResultRelInfo *resultRelInfo,
184 : Relation resultRelationDesc,
185 : Index resultRelationIndex,
186 : Relation partition_root,
187 : int instrument_options);
188 : extern ResultRelInfo *ExecGetTriggerResultRel(EState *estate, Oid relid);
189 : extern void ExecCleanUpTriggerState(EState *estate);
190 : extern void ExecConstraints(ResultRelInfo *resultRelInfo,
191 : TupleTableSlot *slot, EState *estate);
192 : extern bool ExecPartitionCheck(ResultRelInfo *resultRelInfo,
193 : TupleTableSlot *slot, EState *estate, bool emitError);
194 : extern void ExecPartitionCheckEmitError(ResultRelInfo *resultRelInfo,
195 : TupleTableSlot *slot, EState *estate);
196 : extern void ExecWithCheckOptions(WCOKind kind, ResultRelInfo *resultRelInfo,
197 : TupleTableSlot *slot, EState *estate);
198 : extern LockTupleMode ExecUpdateLockMode(EState *estate, ResultRelInfo *relinfo);
199 : extern ExecRowMark *ExecFindRowMark(EState *estate, Index rti, bool missing_ok);
200 : extern ExecAuxRowMark *ExecBuildAuxRowMark(ExecRowMark *erm, List *targetlist);
201 : extern TupleTableSlot *EvalPlanQual(EPQState *epqstate, Relation relation,
202 : Index rti, TupleTableSlot *testslot);
203 : extern void EvalPlanQualInit(EPQState *epqstate, EState *parentestate,
204 : Plan *subplan, List *auxrowmarks, int epqParam);
205 : extern void EvalPlanQualSetPlan(EPQState *epqstate,
206 : Plan *subplan, List *auxrowmarks);
207 : extern TupleTableSlot *EvalPlanQualSlot(EPQState *epqstate,
208 : Relation relation, Index rti);
209 :
210 : #define EvalPlanQualSetSlot(epqstate, slot) ((epqstate)->origslot = (slot))
211 : extern bool EvalPlanQualFetchRowMark(EPQState *epqstate, Index rti, TupleTableSlot *slot);
212 : extern TupleTableSlot *EvalPlanQualNext(EPQState *epqstate);
213 : extern void EvalPlanQualBegin(EPQState *epqstate);
214 : extern void EvalPlanQualEnd(EPQState *epqstate);
215 :
216 : /*
217 : * functions in execProcnode.c
218 : */
219 : extern PlanState *ExecInitNode(Plan *node, EState *estate, int eflags);
220 : extern void ExecSetExecProcNode(PlanState *node, ExecProcNodeMtd function);
221 : extern Node *MultiExecProcNode(PlanState *node);
222 : extern void ExecEndNode(PlanState *node);
223 : extern bool ExecShutdownNode(PlanState *node);
224 : extern void ExecSetTupleBound(int64 tuples_needed, PlanState *child_node);
225 :
226 :
227 : /* ----------------------------------------------------------------
228 : * ExecProcNode
229 : *
230 : * Execute the given node to return a(nother) tuple.
231 : * ----------------------------------------------------------------
232 : */
233 : #ifndef FRONTEND
234 : static inline TupleTableSlot *
235 85905326 : ExecProcNode(PlanState *node)
236 : {
237 85905326 : if (node->chgParam != NULL) /* something changed? */
238 2563476 : ExecReScan(node); /* let ReScan handle this */
239 :
240 85905326 : return node->ExecProcNode(node);
241 : }
242 : #endif
243 :
244 : /*
245 : * prototypes from functions in execExpr.c
246 : */
247 : extern ExprState *ExecInitExpr(Expr *node, PlanState *parent);
248 : extern ExprState *ExecInitExprWithParams(Expr *node, ParamListInfo ext_params);
249 : extern ExprState *ExecInitQual(List *qual, PlanState *parent);
250 : extern ExprState *ExecInitCheck(List *qual, PlanState *parent);
251 : extern List *ExecInitExprList(List *nodes, PlanState *parent);
252 : extern ExprState *ExecBuildAggTrans(AggState *aggstate, struct AggStatePerPhaseData *phase,
253 : bool doSort, bool doHash);
254 : extern ExprState *ExecBuildGroupingEqual(TupleDesc ldesc, TupleDesc rdesc,
255 : const TupleTableSlotOps *lops, const TupleTableSlotOps *rops,
256 : int numCols,
257 : const AttrNumber *keyColIdx,
258 : const Oid *eqfunctions,
259 : const Oid *collations,
260 : 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
285 26652824 : ExecEvalExpr(ExprState *state,
286 : ExprContext *econtext,
287 : bool *isNull)
288 : {
289 26652824 : 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
300 113532562 : ExecEvalExprSwitchContext(ExprState *state,
301 : ExprContext *econtext,
302 : bool *isNull)
303 : {
304 : Datum retDatum;
305 : MemoryContext oldContext;
306 :
307 113532562 : oldContext = MemoryContextSwitchTo(econtext->ecxt_per_tuple_memory);
308 113532562 : retDatum = state->evalfunc(state, econtext, isNull);
309 113522230 : MemoryContextSwitchTo(oldContext);
310 113522230 : 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 ExecBuildProjectionInfo().
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 *
328 44555112 : ExecProject(ProjectionInfo *projInfo)
329 : {
330 44555112 : ExprContext *econtext = projInfo->pi_exprContext;
331 44555112 : ExprState *state = &projInfo->pi_state;
332 44555112 : 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 44555112 : ExecClearTuple(slot);
340 :
341 : /* Run the expression, discarding scalar result from the last column. */
342 44555112 : (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 44546210 : slot->tts_flags &= ~TTS_FLAG_EMPTY;
349 44546210 : slot->tts_nvalid = slot->tts_tupleDescriptor->natts;
350 :
351 44546210 : 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
365 55799442 : 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 55799442 : if (state == NULL)
372 4830054 : return true;
373 :
374 : /* verify that expression was compiled using ExecInitQual */
375 : Assert(state->flags & EEO_FLAG_IS_QUAL);
376 :
377 50969388 : ret = ExecEvalExprSwitchContext(state, econtext, &isnull);
378 :
379 : /* EEOP_QUAL should never return NULL */
380 : Assert(!isnull);
381 :
382 50969370 : return DatumGetBool(ret);
383 : }
384 : #endif
385 :
386 : /*
387 : * ExecQualAndReset() - evaluate qual with ExecQual() and reset expression
388 : * context.
389 : */
390 : #ifndef FRONTEND
391 : static inline bool
392 11474410 : ExecQualAndReset(ExprState *state, ExprContext *econtext)
393 : {
394 11474410 : bool ret = ExecQual(state, econtext);
395 :
396 : /* inline ResetExprContext, to avoid ordering issue in this file */
397 11474410 : MemoryContextReset(econtext->ecxt_per_tuple_memory);
398 11474410 : return ret;
399 : }
400 : #endif
401 :
402 : extern bool ExecCheck(ExprState *state, ExprContext *context);
403 :
404 : /*
405 : * prototypes from functions in execSRF.c
406 : */
407 : extern SetExprState *ExecInitTableFunctionResult(Expr *expr,
408 : ExprContext *econtext, PlanState *parent);
409 : extern Tuplestorestate *ExecMakeTableFunctionResult(SetExprState *setexpr,
410 : ExprContext *econtext,
411 : MemoryContext argContext,
412 : TupleDesc expectedDesc,
413 : bool randomAccess);
414 : extern SetExprState *ExecInitFunctionResultSet(Expr *expr,
415 : ExprContext *econtext, PlanState *parent);
416 : extern Datum ExecMakeFunctionResultSet(SetExprState *fcache,
417 : ExprContext *econtext,
418 : MemoryContext argContext,
419 : bool *isNull,
420 : ExprDoneCond *isDone);
421 :
422 : /*
423 : * prototypes from functions in execScan.c
424 : */
425 : typedef TupleTableSlot *(*ExecScanAccessMtd) (ScanState *node);
426 : typedef bool (*ExecScanRecheckMtd) (ScanState *node, TupleTableSlot *slot);
427 :
428 : extern TupleTableSlot *ExecScan(ScanState *node, ExecScanAccessMtd accessMtd,
429 : ExecScanRecheckMtd recheckMtd);
430 : extern void ExecAssignScanProjectionInfo(ScanState *node);
431 : extern void ExecAssignScanProjectionInfoWithVarno(ScanState *node, Index varno);
432 : extern void ExecScanReScan(ScanState *node);
433 :
434 : /*
435 : * prototypes from functions in execTuples.c
436 : */
437 : extern void ExecInitResultTypeTL(PlanState *planstate);
438 : extern void ExecInitResultSlot(PlanState *planstate,
439 : const TupleTableSlotOps *tts_ops);
440 : extern void ExecInitResultTupleSlotTL(PlanState *planstate,
441 : const TupleTableSlotOps *tts_ops);
442 : extern void ExecInitScanTupleSlot(EState *estate, ScanState *scanstate,
443 : TupleDesc tupleDesc,
444 : const TupleTableSlotOps *tts_ops);
445 : extern TupleTableSlot *ExecInitExtraTupleSlot(EState *estate,
446 : TupleDesc tupledesc,
447 : const TupleTableSlotOps *tts_ops);
448 : extern TupleTableSlot *ExecInitNullTupleSlot(EState *estate, TupleDesc tupType,
449 : const TupleTableSlotOps *tts_ops);
450 : extern TupleDesc ExecTypeFromTL(List *targetList);
451 : extern TupleDesc ExecCleanTypeFromTL(List *targetList);
452 : extern TupleDesc ExecTypeFromExprList(List *exprList);
453 : extern void ExecTypeSetColNames(TupleDesc typeInfo, List *namesList);
454 : extern void UpdateChangedParamSet(PlanState *node, Bitmapset *newchg);
455 :
456 : typedef struct TupOutputState
457 : {
458 : TupleTableSlot *slot;
459 : DestReceiver *dest;
460 : } TupOutputState;
461 :
462 : extern TupOutputState *begin_tup_output_tupdesc(DestReceiver *dest,
463 : TupleDesc tupdesc,
464 : const TupleTableSlotOps *tts_ops);
465 : extern void do_tup_output(TupOutputState *tstate, Datum *values, bool *isnull);
466 : extern void do_text_output_multiline(TupOutputState *tstate, const char *txt);
467 : extern void end_tup_output(TupOutputState *tstate);
468 :
469 : /*
470 : * Write a single line of text given as a C string.
471 : *
472 : * Should only be used with a single-TEXT-attribute tupdesc.
473 : */
474 : #define do_text_output_oneline(tstate, str_to_emit) \
475 : do { \
476 : Datum values_[1]; \
477 : bool isnull_[1]; \
478 : values_[0] = PointerGetDatum(cstring_to_text(str_to_emit)); \
479 : isnull_[0] = false; \
480 : do_tup_output(tstate, values_, isnull_); \
481 : pfree(DatumGetPointer(values_[0])); \
482 : } while (0)
483 :
484 :
485 : /*
486 : * prototypes from functions in execUtils.c
487 : */
488 : extern EState *CreateExecutorState(void);
489 : extern void FreeExecutorState(EState *estate);
490 : extern ExprContext *CreateExprContext(EState *estate);
491 : extern ExprContext *CreateStandaloneExprContext(void);
492 : extern void FreeExprContext(ExprContext *econtext, bool isCommit);
493 : extern void ReScanExprContext(ExprContext *econtext);
494 :
495 : #define ResetExprContext(econtext) \
496 : MemoryContextReset((econtext)->ecxt_per_tuple_memory)
497 :
498 : extern ExprContext *MakePerTupleExprContext(EState *estate);
499 :
500 : /* Get an EState's per-output-tuple exprcontext, making it if first use */
501 : #define GetPerTupleExprContext(estate) \
502 : ((estate)->es_per_tuple_exprcontext ? \
503 : (estate)->es_per_tuple_exprcontext : \
504 : MakePerTupleExprContext(estate))
505 :
506 : #define GetPerTupleMemoryContext(estate) \
507 : (GetPerTupleExprContext(estate)->ecxt_per_tuple_memory)
508 :
509 : /* Reset an EState's per-output-tuple exprcontext, if one's been created */
510 : #define ResetPerTupleExprContext(estate) \
511 : do { \
512 : if ((estate)->es_per_tuple_exprcontext) \
513 : ResetExprContext((estate)->es_per_tuple_exprcontext); \
514 : } while (0)
515 :
516 : extern void ExecAssignExprContext(EState *estate, PlanState *planstate);
517 : extern TupleDesc ExecGetResultType(PlanState *planstate);
518 : extern const TupleTableSlotOps *ExecGetResultSlotOps(PlanState *planstate,
519 : bool *isfixed);
520 : extern void ExecAssignProjectionInfo(PlanState *planstate,
521 : TupleDesc inputDesc);
522 : extern void ExecConditionalAssignProjectionInfo(PlanState *planstate,
523 : TupleDesc inputDesc, Index varno);
524 : extern void ExecFreeExprContext(PlanState *planstate);
525 : extern void ExecAssignScanType(ScanState *scanstate, TupleDesc tupDesc);
526 : extern void ExecCreateScanSlotFromOuterPlan(EState *estate,
527 : ScanState *scanstate,
528 : const TupleTableSlotOps *tts_ops);
529 :
530 : extern bool ExecRelationIsTargetRelation(EState *estate, Index scanrelid);
531 :
532 : extern Relation ExecOpenScanRelation(EState *estate, Index scanrelid, int eflags);
533 :
534 : extern void ExecInitRangeTable(EState *estate, List *rangeTable);
535 :
536 : static inline RangeTblEntry *
537 424946 : exec_rt_fetch(Index rti, EState *estate)
538 : {
539 424946 : return (RangeTblEntry *) list_nth(estate->es_range_table, rti - 1);
540 : }
541 :
542 : extern Relation ExecGetRangeTableRelation(EState *estate, Index rti);
543 :
544 : extern int executor_errposition(EState *estate, int location);
545 :
546 : extern void RegisterExprContextCallback(ExprContext *econtext,
547 : ExprContextCallbackFunction function,
548 : Datum arg);
549 : extern void UnregisterExprContextCallback(ExprContext *econtext,
550 : ExprContextCallbackFunction function,
551 : Datum arg);
552 :
553 : extern Datum GetAttributeByName(HeapTupleHeader tuple, const char *attname,
554 : bool *isNull);
555 : extern Datum GetAttributeByNum(HeapTupleHeader tuple, AttrNumber attrno,
556 : bool *isNull);
557 :
558 : extern int ExecTargetListLength(List *targetlist);
559 : extern int ExecCleanTargetListLength(List *targetlist);
560 :
561 : extern TupleTableSlot *ExecGetTriggerOldSlot(EState *estate, ResultRelInfo *relInfo);
562 : extern TupleTableSlot *ExecGetTriggerNewSlot(EState *estate, ResultRelInfo *relInfo);
563 : extern TupleTableSlot *ExecGetReturningSlot(EState *estate, ResultRelInfo *relInfo);
564 :
565 : /*
566 : * prototypes from functions in execIndexing.c
567 : */
568 : extern void ExecOpenIndices(ResultRelInfo *resultRelInfo, bool speculative);
569 : extern void ExecCloseIndices(ResultRelInfo *resultRelInfo);
570 : extern List *ExecInsertIndexTuples(TupleTableSlot *slot, EState *estate, bool noDupErr,
571 : bool *specConflict, List *arbiterIndexes);
572 : extern bool ExecCheckIndexConstraints(TupleTableSlot *slot, EState *estate,
573 : ItemPointer conflictTid, List *arbiterIndexes);
574 : extern void check_exclusion_constraint(Relation heap, Relation index,
575 : IndexInfo *indexInfo,
576 : ItemPointer tupleid,
577 : Datum *values, bool *isnull,
578 : EState *estate, bool newIndex);
579 :
580 : /*
581 : * prototypes from functions in execReplication.c
582 : */
583 : extern bool RelationFindReplTupleByIndex(Relation rel, Oid idxoid,
584 : LockTupleMode lockmode,
585 : TupleTableSlot *searchslot,
586 : TupleTableSlot *outslot);
587 : extern bool RelationFindReplTupleSeq(Relation rel, LockTupleMode lockmode,
588 : TupleTableSlot *searchslot, TupleTableSlot *outslot);
589 :
590 : extern void ExecSimpleRelationInsert(EState *estate, TupleTableSlot *slot);
591 : extern void ExecSimpleRelationUpdate(EState *estate, EPQState *epqstate,
592 : TupleTableSlot *searchslot, TupleTableSlot *slot);
593 : extern void ExecSimpleRelationDelete(EState *estate, EPQState *epqstate,
594 : TupleTableSlot *searchslot);
595 : extern void CheckCmdReplicaIdentity(Relation rel, CmdType cmd);
596 :
597 : extern void CheckSubscriptionRelkind(char relkind, const char *nspname,
598 : const char *relname);
599 :
600 : #endif /* EXECUTOR_H */
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