delete EqualsAndHashCode

import com.google.common.base.Optional;

import io.shardingsphere.core.constant.AggregationType;

import lombok.EqualsAndHashCode;

import lombok.Getter;

import lombok.ToString;

/**

 * Aggregation distinct select item.

 * @author panjuan

 */

@Getter

@EqualsAndHashCode(callSuper = true)

@ToString

public final class AggregationDistinctSelectItem extends AggregationSelectItem {

    private final String distinctColumnName;