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Cover Image for ERROR: there is no unique constraint matching given keys for referenced table "bar"

ERROR: there is no unique constraint matching given keys for referenced table "bar"

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šŸ” Understanding the Error: "ERROR: there is no unique constraint matching given keys for referenced table 'bar'" Hey there tech enthusiasts! šŸ‘‹ Are you facing trouble deciphering the mystifying PostgreSQL error "ERROR: there is no unique constraint matc

Matheus Mello
Matheus Mello
Cover Image for Grouped LIMIT in PostgreSQL: show the first N rows for each group?

Grouped LIMIT in PostgreSQL: show the first N rows for each group?

updated a few hours ago

šŸ“ GROUPED LIMIT IN POSTGRESQL: SHOW THE FIRST N ROWS FOR EACH GROUP? šŸ˜ Are you struggling with fetching the first N rows for each group in PostgreSQL? šŸ˜£ Don't worry, we've got you covered! In this blog post, we'll explore common issues and provide easy

Matheus Mello
Matheus Mello
Cover Image for PSQLException: current transaction is aborted, commands ignored until end of transaction block

PSQLException: current transaction is aborted, commands ignored until end of transaction block

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# How to Fix the PSQLException: current transaction is aborted Error Are you getting the frustrating `PSQLException: current transaction is aborted, commands ignored until end of transaction block` error in your JBoss application? Don't worry, we've got y

Matheus Mello
Matheus Mello
Cover Image for Why do we need message brokers like RabbitMQ over a database like PostgreSQL?

Why do we need message brokers like RabbitMQ over a database like PostgreSQL?

updated a few hours ago
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# Why Do We Need Message Brokers like RabbitMQ Over a Database like PostgreSQL? šŸ°šŸ“¦šŸ˜ So, you're new to the world of message brokers and you're wondering why we need them, especially when we already have a reliable database like PostgreSQL. šŸ¤” Let's div

Matheus Mello
Matheus Mello
Cover Image for postgresql - add boolean column to table set default

postgresql - add boolean column to table set default

updated a few hours ago

# šŸš€ PostgreSQL: Adding a Boolean Column to a Table with Default Value Hey there, tech enthusiasts! Are you looking to level up your PostgreSQL skills? Today, we are going to tackle a common question: how to add a boolean column to a table in PostgreSQL,

Matheus Mello
Matheus Mello
Cover Image for Postgres: check if array field contains value?

Postgres: check if array field contains value?

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šŸ“ **Title: How to Check If an Array Field Contains a Value in Postgres** **Introduction** Ever found yourself scratching your head trying to figure out how to check if an array field contains a specific value in Postgres? You're not alone! Many develope

Matheus Mello
Matheus Mello
Cover Image for PostgreSQL Crosstab Query

PostgreSQL Crosstab Query

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# Title: Mastering PostgreSQL Crosstab Queries: A Simple Guide for Beginners šŸ‘©ā€šŸ’» šŸ“ **Introduction** So, you want to learn how to create crosstab queries in PostgreSQL? You've come to the right place! In this guide, we'll walk you through the process s

Matheus Mello
Matheus Mello
Cover Image for How to create a backup of a single table in a postgres database?

How to create a backup of a single table in a postgres database?

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šŸ“ **Tech Blog Post: How to Create a Backup of a Single Table in a Postgres Database?** šŸ“¢ Hey tech enthusiasts! Today we're diving into the world of Postgres databases and exploring a commonly asked question: "How to create a backup of a single table wit

Matheus Mello
Matheus Mello
Cover Image for PostgreSQL query to list all table names?

PostgreSQL query to list all table names?

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# šŸ“š The Ultimate Guide to Listing All Table Names in PostgreSQL Are you struggling to find a query that will give you a list of all table names in your PostgreSQL database? We hear you! It can be frustrating when the query you're using returns not just t

Matheus Mello
Matheus Mello
Cover Image for How to check if a service that I don"t know the name of is running on Ubuntu

How to check if a service that I don"t know the name of is running on Ubuntu

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# šŸš€šŸ’» How to Check if a Service on Ubuntu is Running (Even Without Knowing its Name) So you wanna check if a service is running on your Ubuntu machine but you have no idea what its name is? No worries, mate! We've got your back! In this easy-peasy guide

Matheus Mello
Matheus Mello