What Are Group Functions

Q

What Are Group Functions? - MySQL FAQs - SQL SELECT Query Statements with GROUP BY

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A

Group functions are functions applied to a group of rows. Examples of group functions are:

  • COUNT(*) - Returns the number of rows in the group.
  • MIN(exp) - Returns the minimum value of the expression evaluated on each row of the group.
  • MAX(exp) - Returns the maximum value of the expression evaluated on each row of the group.
  • AVG(exp) - Returns the average value of the expression evaluated on each row of the group.

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