2024

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 >> Structured Query Language or SQL is a powerful language used to manipulate and retrieve data in databases. One of the more advanced but incredibly useful capabilities of SQL is the ability to perform mathematical calculations directly on your database columns using

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> w can I parse a string into a specific data type in SQL? When dealing with data in SQL, one of the common tasks you might encounter is converting (or parsing) a string into a specific data type. This may come

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> SQL, or Structured Query Language, is a powerful tool used for communicating with and manipulating databases. It’s an essential skill for many roles in the tech industry. In SQL, databases, tables, and records all have unique identifiers. In this blog, we

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> Working with dates and numbers in SQL can sometimes be a bit challenging, especially when it comes to formatting them to suit the specific requirements of your application. The good news is, SQL provides a number of built-in functions that allow

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> If you’ve worked with SQL for a while, you know how powerful and convenient it is to manipulate data by joining tables within one database. But what if you need to join tables from different databases? Fortunately, SQL also provides the

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> In the world of SQL, data types are fundamental. Different columns in SQL tables can store varying data types including integers, strings, or date/time values. The ability to convert values from one data type to another is essential in analyzing data

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> If you have been working with databases, you often find yourself in a situation where you need to make sure that a specific column exists in a table before performing an operation on it. SQL – Structured Query Language, used for

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> SQL or Structured Query Language is a powerful tool for managing and analyzing large volumes of data. One commonly needed task is to calculate the median value from a list of numbers. Unlike the mean (average), which can be skewed by

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> Calculating the difference between two timestamps in SQL can be a critical operation when it comes to date or time-based analysis. The difference can provide useful insights on time durations, which are commonly used in areas like project planning, task scheduling,