I noticed that we're calling _bt_nonkey_truncate() needlessly when a minimum key is needed at the leftmost page on each level of the tree. This was always a special case, and I think that it should remain as one. Attached patch avoids unneeded truncations, while preserving the generic BTreeTupleGetNAtts() assertions.
This isn't a correctness issue, and the extra overhead of unneeded truncation should be negligible, but what we have now seems confusing to me. -- Peter Geoghegan
0001-Don-t-truncate-away-non-key-attributes-for-leftmost-.patch
Description: Binary data
