Learn SQL articles

How can I perform calculations on columns in SQL queries?

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

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How do I calculate the average of a column in SQL?

For an instructor lead, in-depth look at learning SQL click below. Learn SQL >> SQL or Structured Query Language is a powerful tool used to communicate and manipulate databases. In today’s data-driven world, understanding how to use SQL to extract useful information from raw data stored in databases is critically important. One commonly used operation

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How do I calculate the difference between two timestamps in SQL?

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,

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