/*
* Error callback to give more context info about type conversion failure.
*/
static void
slot_store_error_callback(void *arg)
{
SlotErrCallbackArg *errarg = (SlotErrCallbackArg *) arg;
LogicalRepRelMapEntry *rel;
char *remotetypname;
Oid remotetypoid,
localtypoid;
/* Nothing to do if remote attribute number is not set */
if (errarg->remote_attnum < 0)
return;
rel = errarg->rel;
remotetypoid = rel->remoterel.atttyps[errarg->remote_attnum];
/* Fetch remote type name from the LogicalRepTypMap cache */
remotetypname = logicalrep_typmap_gettypname(remotetypoid);
/* Fetch local type OID from the local sys cache */
localtypoid = get_atttype(rel->localreloid, errarg->local_attnum + 1);
errcontext("processing remote data for replication target relation \"%s.%s\" column \"%s\", "
"remote type %s, local type %s",
rel->remoterel.nspname, rel->remoterel.relname,
rel->remoterel.attnames[errarg->remote_attnum],
remotetypname,
format_type_be(localtypoid));
}
/*
* Main function for aggregating leaf partition MCV/Freq to compute
* root or interior partition MCV/Freq
* Input:
* - relationOid: Oid of root or interior partition
* - attnum: column number
* - nEntries: target number of MCVs/Freqs to be collected, the real number of
* MCVs/Freqs returned may be less
* Output:
* - result: two dimensional arrays of MCVs and Freqs
*/
void
aggregate_leaf_partition_MCVs
(
Oid relationOid,
AttrNumber attnum,
unsigned int nEntries,
ArrayType **result
)
{
List *lRelOids = rel_get_leaf_children_relids(relationOid); /* list of OIDs of leaf partitions */
Oid typoid = get_atttype(relationOid, attnum);
TypInfo *typInfo = (TypInfo*) palloc(sizeof(TypInfo));
initTypInfo(typInfo, typoid);
HTAB* datumHash = createDatumHashTable(nEntries);
float4 sumReltuples = 0;
ListCell *le = NULL;
foreach (le, lRelOids)
{
Oid partOid = lfirst_oid(le);
HeapTuple heaptupleStats = get_att_stats(partOid, attnum);
if (!HeapTupleIsValid(heaptupleStats))
{
continue;
}
float4 partReltuples = 0;
addAllMCVsToHashTable(datumHash, partOid, heaptupleStats, typInfo, &partReltuples);
heap_freetuple(heaptupleStats);
sumReltuples += partReltuples;
}
