A transaction is a unit of work that you want to treat as “a whole.” It has to either happen in full or not at all. In Go lang, a transaction is essentially an object that reserves a connection to the database. You begin a transaction with a call to db.Begin() and close it with a commit() or rollback() method on the resulting Tx variable.
A Novel about Developers, Digital Disruption, and Thriving in the Age of Data
Over a month ago, I read the book “The Phoenix Project” and published a review on my blog. The book was certainly amazing as it touched on so many important aspects of software development, DevOps and my own IT career. To my surprise, I found that the book also has a sequel “The Unicorn Project“.
Continue reading “The Unicorn Project – Book Review”
In the last post Updating/Deleting rows with Go, we learned to manipulate rows in PostgreSQL database in Go project using database/sql package that ships with Go, along with github.com/lib/pq Postgres driver. In this post, we’ll learn how to query rows i.e. SELECT
In the previous post Inserting records into a database with Go, we learned how to insert rows to PostgreSQL database from Go project using database/sql package that ships with Go, along with github.com/lib/pq Postgres driver. In this post, we’ll learn the remaining two DML (data manipulation language) operations i.e. UPDATE and DELETE.
In the previous post Connecting to PostgreSQL from Go lang project, we learned how to connect to the PostgreSQL database from Go lang project using database/sql package that ships with Go, along with github.com/lib/pq Postgres driver. In this post, we’ll learn how to insert data (rows) in a PostgreSQL table.
The Go programming language, sometimes referred to as Go lang, is making strong gains in popularity. Chances are if you are a Go developer, you will have to interact with SQL at some point in your project. This blog post will show how to connect to a PostgreSQL database from Go using database/sql package.
I’ve been working as a database engineer for over a decade, engineering enterprise data platforms. During the beginning of my career in early 2000, I chose the ‘safe’ path of being a DBA believing that relational systems being universal containers for storing critical data will never change. I started learning relational technologies like Oracle, MS-SQL, and eventually also learned Open Source systems including PostgreSQL & MySQL.
A Novel about IT, DevOps, and Helping Your Business Win
Some people are lucky to find books that changes their life. While I’m yet to find my life-changing novel, I do come across books that make me think, question my beliefs and push me to learn. The Project Phoenix is that book for me.
Continue reading “The Phoenix Project – Book Review”
Download link: https://marketplace.visualstudio.com/items?itemName=ms-ossdata.vscode-postgresql
Ctrl + Shift + P (On mac use ⌘ + Shift + P)Search and select PostgreSQL: New Query
In the command palette, select Create Connection Profile. Follow the prompts to enter your Postgres instance hostname, database, username, and password.
You are now connected to your Postgres database. You can confirm this via the Status Bar (the ribbon at the bottom of the VS Code window). It will show your connected hostname, database, and user.
Now, let’s try to query database.
Type a query ex. SELECT * FROM pg_stat_activity;
Right-click, select Execute Query / keyboard shortcut [⌘M ⌘R] and the results will show in a new window.
6. You can also save the query results as JSON, CSV or Excel.
So now, you can seamlessly code for PostgreSQL from Microsoft VS Code without switching screens, leverage powerful intellisense and execute queries.
Enjoy Coding!
IMP NOTE: Result windows from queries won´t show up again after being closed. This is bug with current version and is being worked by dev team. Workaround is either to keep the result window Open Or close / re-open the VS code window.
Starting Postgres 10.x and onward, it is now possible to create declarative partitions.
In my previous post ‘postgresql-table-partitioning-part-i-implementation-using-inheritance‘, I discussed about implementing Partitioning in PostgreSQL using ‘Inheritance’. Up until PostgreSQL 9, it was only way to partition tables in PostgreSQL. It was simple to implement, however had some limitations like:
Continue reading “PostgreSQL Table Partitioning Part II – Declarative Partitioning”
data-nerd.blog 