diff options
Diffstat (limited to 'src/include/nodes/pathnodes.h')
| -rw-r--r-- | src/include/nodes/pathnodes.h | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h index e3c579ee443..13b147d85d5 100644 --- a/src/include/nodes/pathnodes.h +++ b/src/include/nodes/pathnodes.h @@ -204,17 +204,16 @@ struct PlannerInfo /* * simple_rte_array is the same length as simple_rel_array and holds - * pointers to the associated rangetable entries. This lets us avoid - * rt_fetch(), which can be a bit slow once large inheritance sets have - * been expanded. + * pointers to the associated rangetable entries. Using this is a shade + * faster than using rt_fetch(), mostly due to fewer indirections. */ RangeTblEntry **simple_rte_array; /* rangetable as an array */ /* * append_rel_array is the same length as the above arrays, and holds * pointers to the corresponding AppendRelInfo entry indexed by - * child_relid, or NULL if none. The array itself is not allocated if - * append_rel_list is empty. + * child_relid, or NULL if the rel is not an appendrel child. The array + * itself is not allocated if append_rel_list is empty. */ struct AppendRelInfo **append_rel_array; |