com.facebook.presto.spi.function

Annotation Type AggregationFunction

@Retention(value=RUNTIME)
 @Target(value={TYPE,METHOD})
public @interface AggregationFunction

Optional Element Summary

Optional Elements

Modifier and Type	Optional Element and Description
String[]	alias
boolean	decomposable
boolean	isOrderSensitive Indicates whether the result of the function depends on the order in which data is fed in, which allows the engine to optimize away ORDER BY clauses in aggregation calls
String	value
SqlFunctionVisibility	visibility

Element Detail

value

public abstract String value

Default:

""

decomposable

public abstract boolean decomposable

Default:

true

isOrderSensitive

public abstract boolean isOrderSensitive

Indicates whether the result of the function depends on the order in which data is fed in, which allows the engine to optimize away ORDER BY clauses in aggregation calls

Default:

false

visibility

public abstract SqlFunctionVisibility visibility

Default:

com.facebook.presto.spi.function.SqlFunctionVisibility.PUBLIC

alias

public abstract String[] alias

Default:

{}