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Do execGrouping.c via expression eval machinery.

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This has a performance benefit on own, although not hugely so. The
primary benefit is that it will allow for to JIT tuple deforming and
comparator invocations.

Author: Andres Freund
Discussion: https://postgr.es/m/20171129080934.amqqkke2zjtekd4t@alap3.anarazel.de
This commit is contained in:
Andres Freund
2018-02-15 21:55:31 -08:00
parent 51db0d18fb
commit 773aec7aa9
15 changed files with 498 additions and 366 deletions
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29
src/backend/executor/execExprInterp.c
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@ -355,6 +355,7 @@ ExecInterpExpr(ExprState *state, ExprContext *econtext, bool *isnull)
&&CASE_EEOP_MAKE_READONLY,
&&CASE_EEOP_IOCOERCE,
&&CASE_EEOP_DISTINCT,
&&CASE_EEOP_NOT_DISTINCT,
&&CASE_EEOP_NULLIF,
&&CASE_EEOP_SQLVALUEFUNCTION,
&&CASE_EEOP_CURRENTOFEXPR,
@ -1198,6 +1199,34 @@ ExecInterpExpr(ExprState *state, ExprContext *econtext, bool *isnull)
EEO_NEXT();
}
/* see EEOP_DISTINCT for comments, this is just inverted */
EEO_CASE(EEOP_NOT_DISTINCT)
{
FunctionCallInfo fcinfo = op->d.func.fcinfo_data;
if (fcinfo->argnull[0] && fcinfo->argnull[1])
{
*op->resvalue = BoolGetDatum(true);
*op->resnull = false;
}
else if (fcinfo->argnull[0] || fcinfo->argnull[1])
{
*op->resvalue = BoolGetDatum(false);
*op->resnull = false;
}
else
{
Datum eqresult;
fcinfo->isnull = false;
eqresult = op->d.func.fn_addr(fcinfo);
*op->resvalue = eqresult;
*op->resnull = fcinfo->isnull;
}
EEO_NEXT();
}
EEO_CASE(EEOP_NULLIF)
{
/*