We Learn SQL #5 | SQL AGGREGATE FUNCTIONS

Опубликовано: 13 Январь 2020
на канале: We Learn SQL

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We’ll discuss five basic aggregate functions: MIN, MAX, AVERAGE, SUM and COUNT.

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My name’s Adrian and this video is part of the series about SQL basics. We already know JOINs, so it’s time to tackle a new subject. We’ll be talking about aggregate functions.

Aggregate functions are used to compute basic statistics for a given set of rows. They can help us answer questions such as: what is the maximum value in a given column or how many rows are there in a table. Sounds interesting? Let's learn together!

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