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Track in the plan the types associated with PARAM_EXEC parameters.

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Up until now, we only tracked the number of parameters, which was
sufficient to allocate an array of Datums of the appropriate size,
but not sufficient to, for example, know how to serialize a Datum
stored in one of those slots.  An upcoming patch wants to do that,
so add this tracking to make it possible.

Patch by me, reviewed by Tom Lane and Amit Kapila.

Discussion: http://postgr.es/m/CA+TgmoYqpxDKn8koHdW8BEKk8FMUL0=e8m2Qe=M+r0UBjr3tuQ@mail.gmail.com
This commit is contained in:
Robert Haas
2017-11-13 15:24:12 -05:00
parent ce4c86a656
commit e64861c79b
10 changed files with 53 additions and 28 deletions
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6
src/backend/optimizer/plan/planner.c
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@ -243,7 +243,7 @@ standard_planner(Query *parse, int cursorOptions, ParamListInfo boundParams)
glob->rootResultRelations = NIL;
glob->relationOids = NIL;
glob->invalItems = NIL;
glob->nParamExec = 0;
glob->paramExecTypes = NIL;
glob->lastPHId = 0;
glob->lastRowMarkId = 0;
glob->lastPlanNodeId = 0;
@ -415,7 +415,7 @@ standard_planner(Query *parse, int cursorOptions, ParamListInfo boundParams)
* set_plan_references' tree traversal, but for now it has to be separate
* because we need to visit subplans before not after main plan.
*/
if (glob->nParamExec > 0)
if (glob->paramExecTypes != NIL)
{
Assert(list_length(glob->subplans) == list_length(glob->subroots));
forboth(lp, glob->subplans, lr, glob->subroots)
@ -466,7 +466,7 @@ standard_planner(Query *parse, int cursorOptions, ParamListInfo boundParams)
result->rowMarks = glob->finalrowmarks;
result->relationOids = glob->relationOids;
result->invalItems = glob->invalItems;
result->nParamExec = glob->nParamExec;
result->paramExecTypes = glob->paramExecTypes;
/* utilityStmt should be null, but we might as well copy it */
result->utilityStmt = parse->utilityStmt;
result->stmt_location = parse->stmt_location;