/*
* statext_dependencies_load
* Load the functional dependencies for the indicated pg_statistic_ext tuple
*/
MVDependencies *
statext_dependencies_load(Oid mvoid)
{
MVDependencies *result;
bool isnull;
Datum deps;
HeapTuple htup;
htup = SearchSysCache1(STATEXTOID, ObjectIdGetDatum(mvoid));
if (!HeapTupleIsValid(htup))
elog(ERROR, "cache lookup failed for statistics object %u", mvoid);
deps = SysCacheGetAttr(STATEXTOID, htup,
Anum_pg_statistic_ext_stxdependencies, &isnull);
if (isnull)
elog(ERROR,
"requested statistic kind \"%c\" is not yet built for statistics object %u",
STATS_EXT_DEPENDENCIES, mvoid);
result = statext_dependencies_deserialize(DatumGetByteaPP(deps));
ReleaseSysCache(htup);
return result;
}
/*
* statext_ndistinct_load
* Load the ndistinct value for the indicated pg_statistic_ext tuple
*/
MVNDistinct *
statext_ndistinct_load(Oid mvoid)
{
MVNDistinct *result;
bool isnull;
Datum ndist;
HeapTuple htup;
htup = SearchSysCache1(STATEXTOID, ObjectIdGetDatum(mvoid));
if (!HeapTupleIsValid(htup))
elog(ERROR, "cache lookup failed for statistics object %u", mvoid);
ndist = SysCacheGetAttr(STATEXTOID, htup,
Anum_pg_statistic_ext_stxndistinct, &isnull);
if (isnull)
elog(ERROR,
"requested statistic kind \"%c\" is not yet built for statistics object %u",
STATS_EXT_NDISTINCT, mvoid);
result = statext_ndistinct_deserialize(DatumGetByteaPP(ndist));
ReleaseSysCache(htup);
return result;
}
static PyObject *
PLyBytes_FromBytea(PLyDatumToOb *arg, Datum d)
{
text *txt = DatumGetByteaPP(d);
char *str = VARDATA_ANY(txt);
size_t size = VARSIZE_ANY_EXHDR(txt);
return PyBytes_FromStringAndSize(str, size);
}