Applies the aggregate function to all values. ALL is the default.
A constant, column name, or function, and any combination of arithmetic, bitwise, and string operators. MAX can be used with numeric, character, and datetime columns, but not with bit columns. Aggregate functions and subqueries are not permitted.
Returns a value of the same type as expression.
MAX ignores any null values.
For character columns, MAX finds the highest value in the collating sequence.