| From: | Peter Geoghegan <pg(at)heroku(dot)com> |
|---|---|
| To: | Josh berkus <josh(at)agliodbs(dot)com> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Pgsql Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Please correct/improve wiki page about abbreviated keys bug |
| Date: | 2016-03-31 20:38:19 |
| Message-ID: | CAM3SWZStgwpCEOggiXAhAYnkn1Om4R5zeKho22EB+6-XCDzrxA@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Wed, Mar 30, 2016 at 6:23 PM, Josh berkus <josh(at)agliodbs(dot)com> wrote:
> Based on that concept, I wrote a query which is now on the wiki page.
> Please fix it if it's not showing what we want it to show.
Sorry, I got caught up with something last night. I did this this
morning Pacific time.
I've made a number of passes over this. I've listed more non-affected
cases, since there are a number of non-obvious cases that are not at
risk, and fixed-up the SQL query, which didn't seem to be doing the
right thing about default collations or domains. I also made it
explicit that non-leading column indexes are not affected (although
that's just mentioned in passing when discussing the SQL query, as
it's a bit esoteric).
--
Peter Geoghegan
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