Amazon Redshift
Database Developer Guide (API Version 2012-12-01)

MIN Window Function

The MIN window function returns the minimum of the input expression values. The MIN function works with numeric values and ignores NULL values.


MIN ( [ ALL ] expression ) OVER ( [ PARTITION BY expr_list ] [ ORDER BY order_list frame_clause ] )



The target column or expression that the function operates on.


With the argument ALL, the function retains all duplicate values from the expression. ALL is the default. DISTINCT is not supported.


Specifies the window clauses for the aggregation functions. The OVER clause distinguishes window aggregation functions from normal set aggregation functions.

PARTITION BY expr_list

Defines the window for the MIN function in terms of one or more expressions.

ORDER BY order_list

Sorts the rows within each partition. If no PARTITION BY is specified, ORDER BY uses the entire table.


If an ORDER BY clause is used for an aggregate function, an explicit frame clause is required. The frame clause refines the set of rows in a function's window, including or excluding sets of rows within the ordered result. The frame clause consists of the ROWS keyword and associated specifiers. See Window Function Syntax Summary.

Data Types

Accepts any data type as input. Returns the same data type as expression.


See MIN Window Function Examples.