Package io.prestosql.operator.scalar

Class ConcatWsFunction

java.lang.Object

io.prestosql.metadata.SqlScalarFunction

io.prestosql.operator.scalar.ConcatWsFunction

All Implemented Interfaces:

SqlFunction

public final class ConcatWsFunction
extends SqlScalarFunction

Concatenate all but the first argument with separators. The first parameter is used as a separator. The function needs at least 2 params. Null behavior: concat_ws(null, ...) returns null. concat_ws(sep, arg1, arg2,..., argN) returns arg1 through argN concatenated with separator 'sep'. Null arguments are ignored. concat_ws(sep, array[strings]) returns elements in the array concatenated with separators.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ConcatWsFunction.ConcatArrayWs

Field Summary

Fields

Modifier and Type	Field	Description
static ConcatWsFunction	CONCAT_WS

Constructor Summary

Constructors

Constructor	Description
ConcatWsFunction()

Method Summary

Modifier and Type	Method	Description
static io.airlift.slice.Slice	concatWs(io.airlift.slice.Slice separator, io.airlift.slice.Slice[] values)
ScalarFunctionImplementation	specialize(FunctionBinding binding)

Methods inherited from class io.prestosql.metadata.SqlScalarFunction

getFunctionMetadata, specialize

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.prestosql.metadata.SqlFunction

getFunctionDependencies, getFunctionDependencies

Field Detail

CONCAT_WS

public static final ConcatWsFunction CONCAT_WS

Constructor Detail

ConcatWsFunction

public ConcatWsFunction()

Method Detail

specialize

public ScalarFunctionImplementation specialize(FunctionBinding binding)

Overrides:

specialize in class SqlScalarFunction

concatWs

public static io.airlift.slice.Slice concatWs(io.airlift.slice.Slice separator,
                                              io.airlift.slice.Slice[] values)