| From: | Peter Geoghegan <pg(at)bowt(dot)ie> |
|---|---|
| To: | PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Use PageIndexTupleOverwrite() within nbtsort.c |
| Date: | 2019-07-15 22:12:19 |
| Message-ID: | CAH2-Wz=Zk=B9+Vwm376WuO7YTjFc2SSskifQm4Nme3RRRPtOSQ@mail.gmail.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
Attached patch slightly simplifies nbtsort.c by making it use
PageIndexTupleOverwrite() to overwrite the last right non-pivot tuple
with the new high key (pivot tuple). PageIndexTupleOverwrite() is
designed so that code like this doesn't need to delete and re-insert
to replace an existing tuple.
This slightly simplifies the code, and also makes it marginally
faster. I'll add this to the 2019-09 CF.
--
Peter Geoghegan
| Attachment | Content-Type | Size |
|---|---|---|
| 0001-Overwrite-lastright-item-with-highkey-in-nbtsort.c.patch | application/octet-stream | 2.6 KB |
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Thomas Munro | 2019-07-15 22:49:39 | Re: Adding SMGR discriminator to buffer tags |
| Previous Message | Bruce Momjian | 2019-07-15 22:11:41 | Re: [Proposal] Table-level Transparent Data Encryption (TDE) and Key Management Service (KMS) |