ES使用SQL时如何进行日期的格式化

SELECT HISTOGRAM(CAST(statTime AS DATE), INTERVAL 1 DAY) AS h, COUNT(*) FROM \"aaa\" group by h

结果：
[
"2020-05-25T00:00:00.000Z",
16
],
[
"2020-06-12T00:00:00.000Z",
8
]

需要怎么格式化才能得到如下结果？？？
期望结果：
[
"2020-05-25 00:00:00",
16
],
[
"2020-06-12 00:00:00",
8
],