/**
* 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;
import org.apache.hadoop.hive.ql.exec.Description;
/**
* UDFDateFloorHour.
*
* Converts a timestamp to a timestamp with hour granularity.
*/
@Description(name = "floor_hour",
value = "_FUNC_(param) - Returns the timestamp at a hour granularity",
extended = "param needs to be a timestamp value\n"
+ "Example:\n "
+ " > SELECT _FUNC_(CAST('yyyy-MM-dd HH:mm:ss' AS TIMESTAMP)) FROM src;\n"
+ " yyyy-MM-dd HH:00:00")
public class UDFDateFloorHour extends UDFDateFloor {
public UDFDateFloorHour() {
super("HOUR");
}
}