SQL best practices – don’t compare count(*) with 0

On 18th of December 2024, Michael Paquier committed patch: psql: Add more information about service name This commit adds support for the following items in psql, able to show a service name, when available: - Variable SERVICE. - Substitution %s in PROMPT{1,2,3}. This relies on 4b99fed7541e, that has made the service name available … Continue...

On 11st of December 2024, Masahiko Sawada committed patch: Add UUID version 7 generation function. This commit introduces the uuidv7() SQL function, which generates UUID version 7 as specified in RFC 9652. UUIDv7 combines a Unix timestamp in milliseconds and random bits, offering both uniqueness and sortability. In our implementation, the...

I once wrote about this problem, but given that we now have DO blocks and procedures I can make nicer, easy to use example. Over the years there have been many improvements to how long ALTER TABLE can take. You can now (in some cases) change datatype without rewrite or add default value. Regardless how … Continue reading "How to ALTER tables...

New Blog Post Title: How can I send mail or HTTP request from database? This question happens every now and then in one of PostgreSQL support places. Whenever it happens, I just suggest to not try, as interacting with outside world from database can be problematic, and instead use LISTEN/NOTIFY. But it occurred to me, … Continue reading ""

Based on checking logs, and my own personal needs I added more categories of keywords to pgdoc.link: environment variables, like: PGHOST config file names, like: pgpass functions from some contrib modules, like: akeys, or cube_ll_coord various keyword-like functions (?), like: current_user. This happened thanks to bug report by Benjie Gillam This...