每分钟MYSQL平均值

Question

我在同一分钟的mysql表中有很多值，我想选择avg值来显示每分钟的单个值：

DEBIT   2018-02-15 09:22:00 54.8611

DEBIT   2018-02-15 09:22:00 45.4861

DEBIT   2018-02-15 09:22:00 51.7361

DEBIT   2018-02-15 09:22:00 83.3333

DEBIT   2018-02-15 09:23:00 135.764

DEBIT   2018-02-15 09:23:00 134.722

DEBIT   2018-02-15 09:23:00 135.764

DEBIT   2018-02-15 09:24:00 135.417

DEBIT   2018-02-15 09:24:00 135.069

DEBIT   2018-02-15 09:24:00 133.681

DEBIT   2018-02-15 09:25:00 134.375

DEBIT   2018-02-15 09:25:00 134.375

DEBIT   2018-02-15 09:25:00 133.681

输出：

DEBIT APA RACIRE SCALAT 2018-02-15 09:22:00 88.8611

DEBIT APA RACIRE SCALAT 2018-02-15 09:23:00 148.542

DEBIT APA RACIRE SCALAT 2018-02-15 09:24:00 135.875

DEBIT APA RACIRE SCALAT 2018-02-15 09:25:00 134.611

Answer 1

assumin your_date是您可以按HOUR(your_date), MINUTE(Your_date)

分组的日期时间列类型

select DATE(your_date), HOUR(your_date), MINUTE(Your_date), AVG(your_value)
from your_table
GROUP BY DATE(your_date), HOUR(your_date), MINUTE(Your_date)

Answer 2

尝试通过适当调用DATE_FORMAT进行汇总：

SELECT
    DATE_FORMAT(date, '%Y,%m,%d %h,%i'),
    AVG(TEMP) AS avg_temp
FROM yourTable
GROUP BY DATE_FORMAT(date, '%Y,%m,%d %h,%i');