sql优化,评测记录新增字段

mec-biz/src/main/java/com/ym/mec/biz/dal/entity/SysMusicCompareRecord.java

@@ -89,6 +89,9 @@ public class SysMusicCompareRecord extends BaseEntity {
 		this.feature = feature;
 	}
 
+	public SysMusicCompareRecord() {
+	}
+
 	public void setCreateTime(Date createTime) {
 		this.createTime = createTime;
 		this.createDate = DateUtil.format(createTime, DateUtil.DEFAULT_PATTERN);