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Aggregate function. Returns the highest value observed in all rows in an aggregation. “Highest” is determined by the collation rules of the data passed in.


This aggregate function is not to be confused with GREATEST, which is a non-aggregate function returning the highest value in its list of arguments.

MAX ( expression )


Return Type

The highest value, in the type of the input.


memsql> select max(person_id) from people;
| max(person_id) |
|           6336 |

memsql> select max(first_name) from people;
| max(first_name) |
| Zula            |
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