Package io.github.torand.fastersql.function.aggregate

Class AggregateFunctions

java.lang.Object

io.github.torand.fastersql.function.aggregate.AggregateFunctions

public final class AggregateFunctions
extends Object

Provides factory methods for aggregate functions.

Method Summary

Modifier and Type	Method	Description
static Avg	avg(Expression expression)	Creates the average aggregate of an expression.
static CountAll	count()	Creates the count aggregate of all rows.
static Count	count(Expression expression)	Creates the count aggregate of an expression.
static Max	max(Expression expression)	Creates the maximum aggregate of an expression.
static Min	min(Expression expression)	Creates the minimum aggregate of an expression.
static Sum	sum(Expression expression)	Creates the sum aggregate of an expression.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

max

public static Max max(Expression expression)

Creates the maximum aggregate of an expression.

Parameters:

expression - the expression.

Returns:

the aggregate function.

min

public static Min min(Expression expression)

Creates the minimum aggregate of an expression.

Parameters:

expression - the expression.

Returns:

the aggregate function.

count

public static Count count(Expression expression)

Creates the count aggregate of an expression.

Parameters:

expression - the expression.

Returns:

the aggregate function.

count

public static CountAll count()

Creates the count aggregate of all rows.

Returns:

the aggregate function.

sum

public static Sum sum(Expression expression)

Creates the sum aggregate of an expression.

Parameters:

expression - the expression.

Returns:

the aggregate function.

avg

public static Avg avg(Expression expression)

Creates the average aggregate of an expression.

Parameters:

expression - the expression.

Returns:

the aggregate function.