How to ALTER tables without breaking application?

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...

Every now and then I see something like this: SELECT u.* FROM users u WHERE 0 = (SELECT COUNT(*) FROM addresses a WHERE a.user_id = u.id); and it kinda pains me. So figured, I'll write about what is the problem with it, and how to avoid such constructs. Lets consider what went through someones mind … Continue reading "SQL best practices – don’t...

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...