Category "postgresql"

Sometimes one record from the set does not get into the database using EF Core and TimescaleDB

I faced pretty strange behavior in my tests, when only one record from the set is not added to the database and this happens from time to time, not always. Here

Unit Testing for pgxpool

I am looking to write unit tests for Go code that uses pgxpool to interact with a postgres database. Is there a test framework that will stand up a dummy or moc

Unable to access data in Postgres query where clause

I am dealing with the following JSON in a Postgres database column called steps in a table called tCampaign : [ { "name":"Step 1", "stepRefe

The proper way to achieve database locks (Pessimistic Read and Write) with TypeORM and NodeJS

I have an application that needs to deal with concurrency/race conditions. I noticed user account balances were being updated wrongly. Multiple requests can rea

How to deal with django migration postgres deadlock?

So, I was deploying the django app to production and then the infamous postgres deadlock situation happened. This happens during the django migration. Django ve

Error Object Id' is unknown when attempting to save changes. Adding Many to Many to the DB

I have objects with many to many relationship. public class Executor { public long Id { get; set; } public string Name { get; set; } public List&l

GraphQLError: Query root type must be provided

I'm using NestJS, TypeORM and GraphQL for my backend API. I'm getting the following error: GraphQLError [Object]: Query root type must be provided. at Sch

How to fill and access a Django ArrayField?

To solve my (kinda specific) problem, I found that I have to use Django ArrayField: https://docs.djangoproject.com/en/2.1/ref/contrib/postgres/fields/#arrayfiel

Query to update the column of second table based on newly generated id of first table

I have two tables company_types and companies_profiles. company_types_id of company_types and company_type_id of companies_profiles has one to many relationship

Postgres Sql - How to apply Offset on Timestamp

My offset-date-time object I store in the DB with 2 columns, one timestamp(UTC) column and another corresponding offset. For example, if I get: 2017-05-01T16:16

cannot access Postgres views from SSIS thru ODBC PSQL driver

I'm working with Postgres from SSIS thru ODBC Unicode driver ver 13.01. 32-bit connection. I can successfully connect to all Postgres tables but can not able t

How to fix "Error: The server does not support SSL connections" when trying to access database in localhost?

I am following Heroku's node.js tutorial to provision a Postgres database. After creating a simple table and connecting to localhost:5000/db, I get an error sa

Can PostgreSQL JOIN on jsonb array objects?

I am considering switching to PostgreSQL, because of the JSON support. However, I am wondering, if the following would be possible with a single query: Let's s

Generate JSON object from a dynamic set of input functions

I am trying to write a function (f_all) that basically just calls other "partial" functions (e.g. f_1,f_2,f_3) and merges the results of them into one final JSO

PostgreSQL user account has unknown password by default

I just installed PostgreSQL 13 on Windows 11. When I run the command psql by default it uses the user aaron, the name of my Windows user account. However, it as

How to fix Rust diesel cli link libpq.lib error on install

I'm trying (for hours now) to install the cargo crate diesel_cli for postgres. However, every time I run the recommended cargo command: cargo install diesel_cli

I am trying to copy a file, but getting error message

I am new to postgres, probably missing something silly like (the correct name of my directory). Can someone guide me? I am following book instructions, Practica

Apply a filter to an automatically joined table

Here's my SQL setup create table a ( id serial primary key, ta text ); create table b ( id serial primary key,

How to simulate database crash in postgreSQL

I'm new into postgresSQL, in my course in "Advance database" we are given a problem to simulate a crash at given location in postgres, is anyone got an idea how

R ODBC DBI error: database does not exist

I'm working on a Mac and trying to connect to my remote Postgres database in R Studio. Error First, the error: Error: nanodbc/nanodbc.cpp:1021: 00000: FATAL: d