What is the purpose of count () and MAX () function?

Question

Example: SELECT department, COUNT(*)FROM employees WHERE salary > 25000 GROUP BY department; 2. MAX function- returns the maximum values from the column for each group of records. 26 мар. 2020 г.

What is the use MIN () and count () functions?

COUNT() – returns the number of values. MAX() – returns the maximum value. MIN() – returns the minimum value.

What is the use of sum and Max function?

The Max function finds the maximum value. The Min function finds the minimum value. The Sum function calculates the sum of its arguments.

What does count (*) do in SQL?

COUNT(*) returns the number of rows in a specified table, and it preserves duplicate rows. It counts each row separately.

Can we use max and count together in SQL?

And the short answer to the above question is, no. You can't. It is not possible to nest aggregate functions.

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