MAX function [Aggregate]

Returns the maximum expression value found in each group of rows.

Syntax 1 
MAX( expression | DISTINCT expression )
Parameters

  • expression   The expression for which the maximum value is to be calculated. This is commonly a column name.

  • DISTINCT expression   Returns the same as MAX( expression ), and is included for completeness.

Remarks

Rows where expression is NULL are ignored. Returns NULL for a group containing no rows.

See also
Standards and compatibility

  • SQL/2003   Core feature.

Example

The following statement returns the value 138948.000, representing the maximum salary in the Employees table.

SELECT MAX( Salary )
FROM Employees;
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