Line data Source code
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(Relation resultRel, 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 : extern void ExecSetTupleBound(int64 tuples_needed, PlanState *child_node);
236 :
237 :
238 : /* ----------------------------------------------------------------
239 : * ExecProcNode
240 : *
241 : * Execute the given node to return a(nother) tuple.
242 : * ----------------------------------------------------------------
243 : */
244 : #ifndef FRONTEND
245 : static inline TupleTableSlot *
246 20545027 : ExecProcNode(PlanState *node)
247 : {
248 20545027 : if (node->chgParam != NULL) /* something changed? */
249 3552 : ExecReScan(node); /* let ReScan handle this */
250 :
251 20545027 : return node->ExecProcNode(node);
252 : }
253 : #endif
254 :
255 : /*
256 : * prototypes from functions in execExpr.c
257 : */
258 : extern ExprState *ExecInitExpr(Expr *node, PlanState *parent);
259 : extern ExprState *ExecInitQual(List *qual, PlanState *parent);
260 : extern ExprState *ExecInitCheck(List *qual, PlanState *parent);
261 : extern List *ExecInitExprList(List *nodes, PlanState *parent);
262 : extern ProjectionInfo *ExecBuildProjectionInfo(List *targetList,
263 : ExprContext *econtext,
264 : TupleTableSlot *slot,
265 : PlanState *parent,
266 : TupleDesc inputDesc);
267 : extern ExprState *ExecPrepareExpr(Expr *node, EState *estate);
268 : extern ExprState *ExecPrepareQual(List *qual, EState *estate);
269 : extern ExprState *ExecPrepareCheck(List *qual, EState *estate);
270 : extern List *ExecPrepareExprList(List *nodes, EState *estate);
271 :
272 : /*
273 : * ExecEvalExpr
274 : *
275 : * Evaluate expression identified by "state" in the execution context
276 : * given by "econtext". *isNull is set to the is-null flag for the result,
277 : * and the Datum value is the function result.
278 : *
279 : * The caller should already have switched into the temporary memory
280 : * context econtext->ecxt_per_tuple_memory. The convenience entry point
281 : * ExecEvalExprSwitchContext() is provided for callers who don't prefer to
282 : * do the switch in an outer loop.
283 : */
284 : #ifndef FRONTEND
285 : static inline Datum
286 1334773 : ExecEvalExpr(ExprState *state,
287 : ExprContext *econtext,
288 : bool *isNull)
289 : {
290 1334773 : return (*state->evalfunc) (state, econtext, isNull);
291 : }
292 : #endif
293 :
294 : /*
295 : * ExecEvalExprSwitchContext
296 : *
297 : * Same as ExecEvalExpr, but get into the right allocation context explicitly.
298 : */
299 : #ifndef FRONTEND
300 : static inline Datum
301 22265792 : ExecEvalExprSwitchContext(ExprState *state,
302 : ExprContext *econtext,
303 : bool *isNull)
304 : {
305 : Datum retDatum;
306 : MemoryContext oldContext;
307 :
308 22265792 : oldContext = MemoryContextSwitchTo(econtext->ecxt_per_tuple_memory);
309 22265792 : retDatum = (*state->evalfunc) (state, econtext, isNull);
310 22262716 : MemoryContextSwitchTo(oldContext);
311 22262716 : return retDatum;
312 : }
313 : #endif
314 :
315 : /*
316 : * ExecProject
317 : *
318 : * Projects a tuple based on projection info and stores it in the slot passed
319 : * to ExecBuildProjectInfo().
320 : *
321 : * Note: the result is always a virtual tuple; therefore it may reference
322 : * the contents of the exprContext's scan tuples and/or temporary results
323 : * constructed in the exprContext. If the caller wishes the result to be
324 : * valid longer than that data will be valid, he must call ExecMaterializeSlot
325 : * on the result slot.
326 : */
327 : #ifndef FRONTEND
328 : static inline TupleTableSlot *
329 19951853 : ExecProject(ProjectionInfo *projInfo)
330 : {
331 19951853 : ExprContext *econtext = projInfo->pi_exprContext;
332 19951853 : ExprState *state = &projInfo->pi_state;
333 19951853 : TupleTableSlot *slot = state->resultslot;
334 : bool isnull;
335 :
336 : /*
337 : * Clear any former contents of the result slot. This makes it safe for
338 : * us to use the slot's Datum/isnull arrays as workspace.
339 : */
340 19951853 : ExecClearTuple(slot);
341 :
342 : /* Run the expression, discarding scalar result from the last column. */
343 19951853 : (void) ExecEvalExprSwitchContext(state, econtext, &isnull);
344 :
345 : /*
346 : * Successfully formed a result row. Mark the result slot as containing a
347 : * valid virtual tuple (inlined version of ExecStoreVirtualTuple()).
348 : */
349 19949028 : slot->tts_isempty = false;
350 19949028 : slot->tts_nvalid = slot->tts_tupleDescriptor->natts;
351 :
352 19949028 : return slot;
353 : }
354 : #endif
355 :
356 : /*
357 : * ExecQual - evaluate a qual prepared with ExecInitQual (possibly via
358 : * ExecPrepareQual). Returns true if qual is satisfied, else false.
359 : *
360 : * Note: ExecQual used to have a third argument "resultForNull". The
361 : * behavior of this function now corresponds to resultForNull == false.
362 : * If you want the resultForNull == true behavior, see ExecCheck.
363 : */
364 : #ifndef FRONTEND
365 : static inline bool
366 10352715 : ExecQual(ExprState *state, ExprContext *econtext)
367 : {
368 : Datum ret;
369 : bool isnull;
370 :
371 : /* short-circuit (here and in ExecInitQual) for empty restriction list */
372 10352715 : if (state == NULL)
373 8163121 : return true;
374 :
375 : /* verify that expression was compiled using ExecInitQual */
376 2189594 : Assert(state->flags & EEO_FLAG_IS_QUAL);
377 :
378 2189594 : ret = ExecEvalExprSwitchContext(state, econtext, &isnull);
379 :
380 : /* EEOP_QUAL should never return NULL */
381 2189593 : Assert(!isnull);
382 :
383 2189593 : return DatumGetBool(ret);
384 : }
385 : #endif
386 :
387 : extern bool ExecCheck(ExprState *state, ExprContext *context);
388 :
389 : /*
390 : * prototypes from functions in execSRF.c
391 : */
392 : extern SetExprState *ExecInitTableFunctionResult(Expr *expr,
393 : ExprContext *econtext, PlanState *parent);
394 : extern Tuplestorestate *ExecMakeTableFunctionResult(SetExprState *setexpr,
395 : ExprContext *econtext,
396 : MemoryContext argContext,
397 : TupleDesc expectedDesc,
398 : bool randomAccess);
399 : extern SetExprState *ExecInitFunctionResultSet(Expr *expr,
400 : ExprContext *econtext, PlanState *parent);
401 : extern Datum ExecMakeFunctionResultSet(SetExprState *fcache,
402 : ExprContext *econtext,
403 : bool *isNull,
404 : ExprDoneCond *isDone);
405 :
406 : /*
407 : * prototypes from functions in execScan.c
408 : */
409 : typedef TupleTableSlot *(*ExecScanAccessMtd) (ScanState *node);
410 : typedef bool (*ExecScanRecheckMtd) (ScanState *node, TupleTableSlot *slot);
411 :
412 : extern TupleTableSlot *ExecScan(ScanState *node, ExecScanAccessMtd accessMtd,
413 : ExecScanRecheckMtd recheckMtd);
414 : extern void ExecAssignScanProjectionInfo(ScanState *node);
415 : extern void ExecAssignScanProjectionInfoWithVarno(ScanState *node, Index varno);
416 : extern void ExecScanReScan(ScanState *node);
417 :
418 : /*
419 : * prototypes from functions in execTuples.c
420 : */
421 : extern void ExecInitResultTupleSlot(EState *estate, PlanState *planstate);
422 : extern void ExecInitScanTupleSlot(EState *estate, ScanState *scanstate);
423 : extern TupleTableSlot *ExecInitExtraTupleSlot(EState *estate);
424 : extern TupleTableSlot *ExecInitNullTupleSlot(EState *estate,
425 : TupleDesc tupType);
426 : extern TupleDesc ExecTypeFromTL(List *targetList, bool hasoid);
427 : extern TupleDesc ExecCleanTypeFromTL(List *targetList, bool hasoid);
428 : extern TupleDesc ExecTypeFromExprList(List *exprList);
429 : extern void ExecTypeSetColNames(TupleDesc typeInfo, List *namesList);
430 : extern void UpdateChangedParamSet(PlanState *node, Bitmapset *newchg);
431 :
432 : typedef struct TupOutputState
433 : {
434 : TupleTableSlot *slot;
435 : DestReceiver *dest;
436 : } TupOutputState;
437 :
438 : extern TupOutputState *begin_tup_output_tupdesc(DestReceiver *dest,
439 : TupleDesc tupdesc);
440 : extern void do_tup_output(TupOutputState *tstate, Datum *values, bool *isnull);
441 : extern void do_text_output_multiline(TupOutputState *tstate, const char *txt);
442 : extern void end_tup_output(TupOutputState *tstate);
443 :
444 : /*
445 : * Write a single line of text given as a C string.
446 : *
447 : * Should only be used with a single-TEXT-attribute tupdesc.
448 : */
449 : #define do_text_output_oneline(tstate, str_to_emit) \
450 : do { \
451 : Datum values_[1]; \
452 : bool isnull_[1]; \
453 : values_[0] = PointerGetDatum(cstring_to_text(str_to_emit)); \
454 : isnull_[0] = false; \
455 : do_tup_output(tstate, values_, isnull_); \
456 : pfree(DatumGetPointer(values_[0])); \
457 : } while (0)
458 :
459 :
460 : /*
461 : * prototypes from functions in execUtils.c
462 : */
463 : extern EState *CreateExecutorState(void);
464 : extern void FreeExecutorState(EState *estate);
465 : extern ExprContext *CreateExprContext(EState *estate);
466 : extern ExprContext *CreateStandaloneExprContext(void);
467 : extern void FreeExprContext(ExprContext *econtext, bool isCommit);
468 : extern void ReScanExprContext(ExprContext *econtext);
469 :
470 : #define ResetExprContext(econtext) \
471 : MemoryContextReset((econtext)->ecxt_per_tuple_memory)
472 :
473 : extern ExprContext *MakePerTupleExprContext(EState *estate);
474 :
475 : /* Get an EState's per-output-tuple exprcontext, making it if first use */
476 : #define GetPerTupleExprContext(estate) \
477 : ((estate)->es_per_tuple_exprcontext ? \
478 : (estate)->es_per_tuple_exprcontext : \
479 : MakePerTupleExprContext(estate))
480 :
481 : #define GetPerTupleMemoryContext(estate) \
482 : (GetPerTupleExprContext(estate)->ecxt_per_tuple_memory)
483 :
484 : /* Reset an EState's per-output-tuple exprcontext, if one's been created */
485 : #define ResetPerTupleExprContext(estate) \
486 : do { \
487 : if ((estate)->es_per_tuple_exprcontext) \
488 : ResetExprContext((estate)->es_per_tuple_exprcontext); \
489 : } while (0)
490 :
491 : extern void ExecAssignExprContext(EState *estate, PlanState *planstate);
492 : extern void ExecAssignResultType(PlanState *planstate, TupleDesc tupDesc);
493 : extern void ExecAssignResultTypeFromTL(PlanState *planstate);
494 : extern TupleDesc ExecGetResultType(PlanState *planstate);
495 : extern void ExecAssignProjectionInfo(PlanState *planstate,
496 : TupleDesc inputDesc);
497 : extern void ExecFreeExprContext(PlanState *planstate);
498 : extern void ExecAssignScanType(ScanState *scanstate, TupleDesc tupDesc);
499 : extern void ExecAssignScanTypeFromOuterPlan(ScanState *scanstate);
500 :
501 : extern bool ExecRelationIsTargetRelation(EState *estate, Index scanrelid);
502 :
503 : extern Relation ExecOpenScanRelation(EState *estate, Index scanrelid, int eflags);
504 : extern void ExecCloseScanRelation(Relation scanrel);
505 :
506 : extern int executor_errposition(EState *estate, int location);
507 :
508 : extern void RegisterExprContextCallback(ExprContext *econtext,
509 : ExprContextCallbackFunction function,
510 : Datum arg);
511 : extern void UnregisterExprContextCallback(ExprContext *econtext,
512 : ExprContextCallbackFunction function,
513 : Datum arg);
514 :
515 : extern void ExecLockNonLeafAppendTables(List *partitioned_rels, EState *estate);
516 :
517 : extern Datum GetAttributeByName(HeapTupleHeader tuple, const char *attname,
518 : bool *isNull);
519 : extern Datum GetAttributeByNum(HeapTupleHeader tuple, AttrNumber attrno,
520 : bool *isNull);
521 :
522 : extern int ExecTargetListLength(List *targetlist);
523 : extern int ExecCleanTargetListLength(List *targetlist);
524 :
525 : /*
526 : * prototypes from functions in execIndexing.c
527 : */
528 : extern void ExecOpenIndices(ResultRelInfo *resultRelInfo, bool speculative);
529 : extern void ExecCloseIndices(ResultRelInfo *resultRelInfo);
530 : extern List *ExecInsertIndexTuples(TupleTableSlot *slot, ItemPointer tupleid,
531 : EState *estate, bool noDupErr, bool *specConflict,
532 : List *arbiterIndexes);
533 : extern bool ExecCheckIndexConstraints(TupleTableSlot *slot, EState *estate,
534 : ItemPointer conflictTid, List *arbiterIndexes);
535 : extern void check_exclusion_constraint(Relation heap, Relation index,
536 : IndexInfo *indexInfo,
537 : ItemPointer tupleid,
538 : Datum *values, bool *isnull,
539 : EState *estate, bool newIndex);
540 :
541 : /*
542 : * prototypes from functions in execReplication.c
543 : */
544 : extern bool RelationFindReplTupleByIndex(Relation rel, Oid idxoid,
545 : LockTupleMode lockmode,
546 : TupleTableSlot *searchslot,
547 : TupleTableSlot *outslot);
548 : extern bool RelationFindReplTupleSeq(Relation rel, LockTupleMode lockmode,
549 : TupleTableSlot *searchslot, TupleTableSlot *outslot);
550 :
551 : extern void ExecSimpleRelationInsert(EState *estate, TupleTableSlot *slot);
552 : extern void ExecSimpleRelationUpdate(EState *estate, EPQState *epqstate,
553 : TupleTableSlot *searchslot, TupleTableSlot *slot);
554 : extern void ExecSimpleRelationDelete(EState *estate, EPQState *epqstate,
555 : TupleTableSlot *searchslot);
556 : extern void CheckCmdReplicaIdentity(Relation rel, CmdType cmd);
557 :
558 : extern void CheckSubscriptionRelkind(char relkind, const char *nspname,
559 : const char *relname);
560 :
561 : #endif /* EXECUTOR_H */
|
