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Add UtilityReturnsTuples() support for CALL

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This ensures that prepared statements for CALL can return tuples.
This commit is contained in:
Peter Eisentraut
2018-07-09 13:58:08 +02:00
parent cccf81d259
commit ec67b89816
3 changed files with 34 additions and 0 deletions
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24
src/backend/commands/functioncmds.c
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@ -51,6 +51,7 @@
#include "commands/proclang.h"
#include "executor/execdesc.h"
#include "executor/executor.h"
#include "funcapi.h"
#include "miscadmin.h"
#include "optimizer/clauses.h"
#include "optimizer/var.h"
@ -2340,3 +2341,26 @@ ExecuteCallStmt(CallStmt *stmt, ParamListInfo params, bool atomic, DestReceiver
FreeExecutorState(estate);
}
/*
* Construct the tuple descriptor for a CALL statement return
*/
TupleDesc
CallStmtResultDesc(CallStmt *stmt)
{
FuncExpr *fexpr;
HeapTuple tuple;
TupleDesc tupdesc;
fexpr = stmt->funcexpr;
tuple = SearchSysCache1(PROCOID, ObjectIdGetDatum(fexpr->funcid));
if (!HeapTupleIsValid(tuple))
elog(ERROR, "cache lookup failed for procedure %u", fexpr->funcid);
tupdesc = build_function_result_tupdesc_t(tuple);
ReleaseSysCache(tuple);
return tupdesc;
}