Grokking SQL for Tech Interviews
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HAVING

HAVING

In MySQL, the HAVING clause is used in conjunction with the GROUP BY clause to filter the results of a query based on aggregate functions.

The HAVING clause is applied after the GROUP BY clause and allows you to specify conditions for groups of rows. It is primarily used with aggregate functions like SUM, COUNT, AVG, etc.

Syntax

SELECT column_name
FROM table_name
WHERE condition
GROUP BY column_name
HAVING condition

Example

Suppose we have a Students table as shown below:

Now, let's say you want to find courses where the number of students who

.....

.....

.....

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Hasnain Zeeshan

Hasnain Zeeshan

· 2 years ago

The answer should not include the 2nd row because there is only 1 English student with a mark over 80

M

m.malak.fahmy

· 2 years ago

Wrong result value for the mentioned example

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