Re: Add RESPECT/IGNORE NULLS and FROM FIRST/LAST options

Andrew Gierth <andrew@tao11.riddles.org.uk>

From: Andrew Gierth <andrew@tao11.riddles.org.uk>

To: Tom Lane <tgl@sss.pgh.pa.us>

Cc: pgsql-hackers@postgresql.org, david@fetter.org, Oliver Ford <ojford@gmail.com>, Krasiyan Andreev <krasiyan@gmail.com>

Date: 2018-09-24T00:26:44Z

Lists: pgsql-hackers

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

Fix coding style with "else".
- 20628b62e46e 19 (unreleased) landed
Fix multi WinGetFuncArgInFrame/Partition calls with IGNORE NULLS.
- 2d7b247cb414 19 (unreleased) landed
Fix Coverity issue reported in commit 2273fa32bce.
- dd766a441d69 19 (unreleased) landed
Use ereport rather than elog in WinCheckAndInitializeNullTreatment.
- 5f3808646f67 19 (unreleased) landed
Avoid uninitialized-variable warnings from older compilers.
- 71540dcdcb22 19 (unreleased) cited
Fix Coverity issues reported in commit 25a30bbd423.
- 2273fa32bce7 19 (unreleased) landed
Improve EXPLAIN's display of window functions.
- 8b1b342544b6 18.0 cited
Automatically generate node support functions
- 964d01ae90c3 16.0 cited

>>>>> "Tom" == Tom Lane <tgl@sss.pgh.pa.us> writes:

 >> select nth_value(x) from first ignore;

 Tom> No, because once IGNORE is a keyword, even unreserved, it's not
 Tom> legal as an AS-less alias.

That rule only applies in the select-list, not in the FROM clause; table
aliases in FROM are just ColId, so they can be anything except a fully
reserved or type_func_name keyword.

-- 
Andrew (irc:RhodiumToad)