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Fix transition tables for wCTEs.

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The original coding didn't handle this case properly; each separate
DML substatement needs its own set of transitions.

Patch by Thomas Munro

Discussion: https://postgr.es/m/CAL9smLCDQ%3D2o024rBgtD4WihzX8B3C6u_oSQ2K3%2BR5grJrV0bg%40mail.gmail.com
This commit is contained in:
Andrew Gierth
2017-06-28 18:59:01 +01:00
parent 501ed02cf6
commit c46c0e5202
7 changed files with 174 additions and 148 deletions
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18
src/include/commands/trigger.h
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@ -42,8 +42,8 @@ typedef struct TriggerData
} TriggerData;
/*
* Meta-data to control the capture of old and new tuples into transition
* tables from child tables.
* The state for capturing old and new tuples into transition tables for a
* single ModifyTable node.
*/
typedef struct TransitionCaptureState
{
@ -72,6 +72,10 @@ typedef struct TransitionCaptureState
* the original tuple directly.
*/
HeapTuple tcs_original_insert_tuple;
/* The tuplestores backing the transition tables. */
Tuplestorestate *tcs_old_tuplestore;
Tuplestorestate *tcs_new_tuplestore;
} TransitionCaptureState;
/*
@ -162,13 +166,15 @@ extern TriggerDesc *CopyTriggerDesc(TriggerDesc *trigdesc);
extern const char *FindTriggerIncompatibleWithInheritance(TriggerDesc *trigdesc);
extern TransitionCaptureState *MakeTransitionCaptureState(TriggerDesc *trigdesc);
extern void DestroyTransitionCaptureState(TransitionCaptureState *tcs);
extern void FreeTriggerDesc(TriggerDesc *trigdesc);
extern void ExecBSInsertTriggers(EState *estate,
ResultRelInfo *relinfo);
extern void ExecASInsertTriggers(EState *estate,
ResultRelInfo *relinfo);
ResultRelInfo *relinfo,
TransitionCaptureState *transition_capture);
extern TupleTableSlot *ExecBRInsertTriggers(EState *estate,
ResultRelInfo *relinfo,
TupleTableSlot *slot);
@ -183,7 +189,8 @@ extern TupleTableSlot *ExecIRInsertTriggers(EState *estate,
extern void ExecBSDeleteTriggers(EState *estate,
ResultRelInfo *relinfo);
extern void ExecASDeleteTriggers(EState *estate,
ResultRelInfo *relinfo);
ResultRelInfo *relinfo,
TransitionCaptureState *transition_capture);
extern bool ExecBRDeleteTriggers(EState *estate,
EPQState *epqstate,
ResultRelInfo *relinfo,
@ -200,7 +207,8 @@ extern bool ExecIRDeleteTriggers(EState *estate,
extern void ExecBSUpdateTriggers(EState *estate,
ResultRelInfo *relinfo);
extern void ExecASUpdateTriggers(EState *estate,
ResultRelInfo *relinfo);
ResultRelInfo *relinfo,
TransitionCaptureState *transition_capture);
extern TupleTableSlot *ExecBRUpdateTriggers(EState *estate,
EPQState *epqstate,
ResultRelInfo *relinfo,