$min

Returns the minimum value of a set of values.

Syntax

$max(expression)

Parameters

expression

any expression

Return Value

The value of the selected instance of expression.

Comments

Use $min to find the smallest value among members of a set. Instances of expression that are $Null are ignored.

Expression is often a WHERE expression that includes only selected values in the operation. If the WHERE expression (expr1 WHERE expr2) is true, the expr1 value is included in the operation; otherwise, expression is considered $Null and is ignored.

Example

compute Employees where DeptName = "Sales" \
  evaluate (let MaxSal = $max(Salary)) \
      (let MinSal = $min(Salary)) \
      (let MaxSalF = $max(Salary where Sex = "F")) \
      (let MinSalF = $min(Salary where Sex = "F"))

At the end of this operation, MaxSal contains the highest salary paid to any employee in Sales; MinSal contains the lowest salary paid to any employee in Sales; MaxSalF contains the highest salary paid to any female employee in Sales; and, MinSalF contains the lowest salary paid to any female employee in Sales.

 

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