Learn SQL articles

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> If you’re often working with large data sets, you might at times need to identify and manipulate duplicate records. SQL, with its built-in functions, can be a powerful tool to help you find these duplicates. Let’s explore how. Understanding Duplicate Records […]

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> In SQL, it is common to work with dates and times. Your goal might involve identifying users who have been inactive for a certain period, finding records that took longer than expected, or extracting data based on specified date ranges. In

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> When working with data in SQL (Structured Query Language), it’s common to encounter tasks that involve understanding, manipulating, and analyzing text strings. One such task is finding the length of a string. This can be extremely useful in numerous scenarios, from

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> Welcome back to our ongoing series on SQL programming. In this edition, we’re going to cover HAVING, a clause in SQL that allows you to filter aggregated data. Let’s start by understanding why we need to use HAVING clause in SQL.

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> Managing dates in any programming language can be a complex task and SQL is no exception. One frequent requirement in data analytics is to calculate the difference between two dates. Fortunately, SQL provides robust functions to work with dates. In this

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> ** Checking if a specific value exists in a comma-separated list in a SQL database may seem like a tricky task, but it is much simpler than you might think. You would typically use this when you have a string column

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> If you find yourself manipulating multiple SQL databases and tables at the same time, it’s standard to combine various SQL queries into one result set. This approach simplifies your task and increases the efficiency and effectiveness of your data processes. Here,

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> If you are dealing with a large database, there might be a situation where you need to combine data from multiple rows into a single string. Fortunately, SQL (Structured Query Language) offers some simple tools and methods for this consolidation. In

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> When it comes to handling data in SQL, you may often encounter scenarios where the date information is stored as strings, and you want to convert them to the date format for further operations. SQL Server provides a built-in function called

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> In SQL programming, converting strings to either uppercase or lowercase can be achieved using in-built functions designed for this purpose. This conversion can be handy when performing data cleaning, manipulation and comparison tasks. In this blog post, we’re going to explore