Learn how to extract data from strings in PostgreSQL using the split_part function. Quite often, we’d like to extract parts of a string when working with text values. A common example is when we have a full name and need to retrieve only the last name. In this article, we’ll examine split_part, a PostgreSQL string-related function that can be used to extract a substring. Why Use String Functions in Your Database?
Unwanted characters in text data can be a bit of a pain, but there’s an easy way to fix them! Sometimes, we’ll find extra characters inside our string data because our SQL queries didn’t work as expected. Moreover, these extra characters may sometimes be invisible, which really complicates things. In this article, we’ll examine some string-related SQL functions that can handle unwanted characters—visible or not! The Importance of Standardizing Strings in Your Database When we work with data populated or loaded as free text, the data quality is often quite poor.
Misspelled names, typos, and text data quality issues in your database? Power up your queries! Use SQL string functions to address data quality issues related to capitalization. Sometimes, our SQL queries don’t work as expected because of data quality issues. In this article, we will examine some string-related SQL functions that can correct data quality issues related to capitalization. We’ll be using PostgreSQL in our examples, but similar functions are available in most database engines.
Regardless of the engine you are using (SQL Server, mySQL, Oracle, etc), you can prevent common errors and simplify the debugging process. This article will discuss some of the issues you’ll face and will help you tackle them successfully. One of the best ways to prevent SQL errors is to keep your queries clear and readable. It’s very easy to forget the ideas behind your code! If you have to revisit it (and you will), messy code can be hard to understand.