更新 'patient-co/patient-co-statistics-es/readme.MD'

patient-co/patient-co-statistics-es/readme.MD

@@ -99,13 +99,15 @@ SELECT * FROM wlyy_quota_test where townName like '%湖里%'
**时间聚合使用**
```select town,townName,sum(result1) result1 from wlyy_quota_test group by town,townName,date_histogram(field='quotaDate','interval'='month')```
interval例子
```
1天    date_histogram(field='quotaDate','interval'='1d')
每周   date_histogram(field='quotaDate','interval'='week')
每月   date_histogram(field='quotaDate','interval'='month')
每季度 date_histogram(field='quotaDate','interval'='quarter')
每年   date_histogram(field='quotaDate','interval'='year')
```
**子字段(nested)查询**