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Re: pipelining in psql, commit 41625ab

Noah Misch <noah@leadboat.com>

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From: Noah Misch <noah@leadboat.com>
To: Michael Paquier <michael@paquier.xyz>
Cc: Anthonin Bonnefoy <anthonin.bonnefoy@datadoghq.com>, Jelte Fennema-Nio <postgres@jeltef.nl>, PostgreSQL Hackers <pgsql-hackers@postgresql.org>
Date: 2025-04-16T23:13:10Z
Lists: pgsql-hackers 
On Wed, Apr 16, 2025 at 09:46:42AM -0700, Michael Paquier wrote:
> On Tue, Apr 15, 2025 at 02:34:50PM -0700, Noah Misch wrote:
> > On Fri, Feb 21, 2025 at 11:33:41AM +0900, Michael Paquier wrote:
> > commit 41625ab wrote:
> >> --- a/src/bin/psql/help.c
> >> +++ b/src/bin/psql/help.c
> >> @@ -167,15 +167,22 @@ slashUsage(unsigned short int pager)
> >>  	HELP0("  \\close STMT_NAME       close an existing prepared statement\n");
> >>  	HELP0("  \\copyright             show PostgreSQL usage and distribution terms\n");
> >>  	HELP0("  \\crosstabview [COLUMNS] execute query and display result in crosstab\n");
> >> +	HELP0("  \\endpipeline           exit pipeline mode\n");
> >>  	HELP0("  \\errverbose            show most recent error message at maximum verbosity\n");
> >> +	HELP0("  \\flush                 push unsent data to the server\n");
> >> +	HELP0("  \\flushrequest          send a flushrequest command\n");
> > 
> > protocol.sgml calls it a "Flush command".
> 
> For \flushrequest, how about "send a request to the server to flush
> its output buffer" and for \flush "flush output data to the server",
> mapping more with the libpq desctiptions?

Works for me.

Commits

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

  1. psql: Fix assertion failures with pipeline mode

  2. psql: Rework TAP routine psql_fails_like() to define WAL sender context

  3. psql: Split extended query protocol meta-commands in --help=commands

  4. psql: Improve descriptions of \\flush[request] in --help

  5. psql: Fix incorrect status code returned by \getresults

  6. psql: Allow queries terminated by semicolons while in pipeline mode

  7. psql: Add \sendpipeline to send query buffers while in a pipeline

  8. psql: Fix memory leak with \gx used within a pipeline

  9. psql: Add pipeline status to prompt and some state variables

  10. Add more tests for utility commands in pipelines

  11. psql: Add support for pipelines

  12. Add braces for if block with large comment in psql's common.c