MIN (Transact-SQL)
SQL Server 2008
Returns the minimum value in the expression. May be followed by the OVER clause.
Applies the aggregate function to all values. ALL is the default.
Specifies that each unique value is considered. DISTINCT is not meaningful with MIN and is available for ISO compatibility only.
Is a constant, column name, or function, and any combination of arithmetic, bitwise, and string operators. MIN can be used with numeric, char, varchar, or datetime columns, but not with bit columns. Aggregate functions and subqueries are not permitted.
For more information, see Expressions (Transact-SQL).

