I have created a script to be run on a Postgres DB, and it works perfectly when run in DBeaver as long as Autocommit is turned on, but when the same script is run in pgAdmin with Autocommit turned on,…
DROP TABLE IF EXISTS A; CREATE TABLE a (id int); CREATE or replace FUNCTION insert_and_return(int) RETURNS int AS $$ BEGIN INSERT INTO a VALUES ($1); RETURN $1; END; $$ LANGUAGE plpgsql; SELECT * FROM insert_and_return(10),A AS y; Above code has…
i have the following tables: tenants: tenantId (UUID) invoiceAddress (TEXT) packages: packageId needsInvoice tenants_and_packages: tenantsAndPackagesId tenantId packageId This is a M2N-Mapping between Tenants and Packages. What is the problem? I want to achieve the following "Check"-Logic. I want to make…
Node.js / Nest.js /Typeorm /postgresql my code is i have table farm | id | center_point type GeoJson | point type GeoPoints| It can save to database, Does it have another way to update before commitTransaction ** if Transaction fail…
I want to drop unused tables. I listed empty tables to make sure that tables not getting inserts and deletes (using such as temporary table) within 1 week. Is there way for checking if a table is not getting any…
I am beginning to understand how transaction and locks work in databases. So in a very higher-level understanding: BEGIN -- txID: 1234 UPDATE tbl_1 SET field = value WHERE id IN (1); -- for simplicity -- Locks acquired on rows…
From the documentation, my understanding is that when a ROLLBACK command is issued in a transaction, PostgreSQL typically employs the Write-Ahead Logging (WAL) mechanism to undo the changes made within that transaction. However, because changes made to UNLOGGED tables bypass…
I’m using Postgres and have a transactional method defined as follows: @Entity public class SomeEntity { // … } @Transactional(isolation = READ_COMMITED) public void persistUniqueAndSendEmail() { SomeEntity e = // … // Persis the entity to Postgres with a unique…
I try to do transactions on my project java, and I realise all transactions don't rollback the rows in DB. It's a local project (the DB was MySQL on phpmyadmin, all tables in innoDB). I try to do an insert…
When trying to use SERIALIZABLE transactions in PostgreSQL, I'm hitting very unexpected serialization failures on the simplest possible access patterns: SELECT row to see if it exists, and then INSERT when it doesn't. To set the background: --psql (14.10 (Ubuntu…