/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hive.ql.udf.generic;
import org.apache.hadoop.hive.ql.exec.Description;
/**
* GenericUDF Class for SQL construct "greatest(v1, v2, .. vn)".
*/
@Description(name = "greatest",
value = "_FUNC_(v1, v2, ...) - Returns the greatest value in a list of values",
extended = "Example:\n"
+ " > SELECT _FUNC_(2, 3, 1) FROM src LIMIT 1;\n" + " 3")
public class GenericUDFGreatest extends GenericUDFBaseNwayCompare {
@Override
protected String getFuncName() {
return "greatest";
}
@Override
protected int getOrder() {
return 1;
}
}