/**
 * 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.tajo.engine.function.builtin;

import org.apache.tajo.catalog.Column;
import org.apache.tajo.common.TajoDataTypes.Type;
import org.apache.tajo.engine.function.annotation.Description;
import org.apache.tajo.engine.function.annotation.ParamTypes;

@Description(
    functionName = "VAR_SAMP",
    description = "The unbiased sample variance of a set of numbers.",
    example = "> SELECT VAR_SAMP(expr);",
    returnType = Type.FLOAT8,
    paramTypes = {@ParamTypes(paramTypes = {Type.INT4})}
)
public class VarSampInt extends VarSamp {
  public VarSampInt() {
    super(new Column[] {
        new Column("expr", Type.INT4)
    });
  }
}