static RelOptInfo *
saio_main(PlannerInfo *root, int levels_needed, List *initial_rels)
{
if (enable_saio && levels_needed >= saio_threshold)
return saio(root, levels_needed, initial_rels);
else if (enable_geqo && levels_needed >= geqo_threshold)
return geqo(root, levels_needed, initial_rels);
else
return standard_join_search(root, levels_needed, initial_rels);
}
/*
* get_combiner_join_rel
*
* Gets the input rel for a combine plan, which only ever needs to read from a TuplestoreScan
* because the workers have already done most of the work
*/
static RelOptInfo *
get_combiner_join_rel(PlannerInfo *root, int levels_needed, List *initial_rels)
{
RelOptInfo *rel;
Path *path;
rel = standard_join_search(root, levels_needed, initial_rels);
rel->pathlist = NIL;
path = create_tuplestore_scan_path(rel);
add_path(rel, path);
set_cheapest(rel);
return rel;
}
