PostgreSQL: Why does my UPDATE statement not reflect changes in SELECT after a transaction?
I've tried everything I can think of but I've tried everything I can think of but I keep running into I tried several approaches but none seem to work... I'm stuck on something that should probably be simple... I've been struggling with this for a few days now and could really use some help. After trying multiple solutions online, I still can't figure this out. I'm currently working with PostgreSQL 13 and I'm working with an scenario where an UPDATE statement does not seem to reflect the changes when I immediately run a SELECT statement afterwards, all within the same transaction. I have the following code snippet: ```sql BEGIN; UPDATE users SET last_login = NOW() WHERE user_id = 1; SELECT * FROM users WHERE user_id = 1; COMMIT; ``` Despite executing the above, the SELECT query returns the old `last_login` value instead of the updated timestamp. I've verified that the UPDATE statement executes successfully and returns the expected number of rows affected. I also tried explicitly using the `RETURNING` clause with my UPDATE to see if that might help: ```sql UPDATE users SET last_login = NOW() WHERE user_id = 1 RETURNING *; ``` This does indeed return the updated record immediately after the update, but running a separate SELECT immediately after does not show the updated value unless I commit the transaction. Is this expected behavior in PostgreSQL? How can I see the updated values in subsequent SELECT statements without committing the transaction? I've also checked for any isolation level settings and it appears to be set to the default 'read committed'. Any insights would be appreciated! I'd really appreciate any guidance on this. Thanks in advance! For context: I'm using Sql on Linux. Is there a better approach? This is part of a larger service I'm building. What am I doing wrong? I'm working with Sql in a Docker container on CentOS. Any ideas what could be causing this? This is happening in both development and production on Windows 10. I appreciate any insights!