手动按特定顺序排序答案

【问题标题】：Sort in a specific order manually手动按特定顺序排序
【发布时间】：2021-02-16 08:41:38
【问题描述】：

我有以下查询：

SELECT mean("voltage") FROM "cells" WHERE 
("cell" = 'Cell 1' or "cell" = 'Cell 2' OR "cell" = 'Cell 3' OR "cell" = 'Cell 4' OR 
 "cell" = 'Cell 5' OR "cell" = 'Cell 6' OR "cell" = 'Cell 7' OR "cell" = 'Cell 8' OR 
 "cell" = 'Cell 9' OR "cell" = 'Cell 10' OR "cell" = 'Cell 11' OR "cell" = 'Cell 12' OR 
 "cell" = 'Cell 13' OR "cell" = 'Cell 14' OR "cell" = 'Cell 15' OR "cell" = 'Cell 16') 
AND $timeFilter 
GROUP BY time($__interval), "cell" fill(linear)

我的问题是流入排序为字符串，所以我得到单元格 1，然后是单元格 10，我想要单元格 1，单元格 2 ......，我该如何实现？

【问题讨论】：

您可以尝试使用 WHERE cell IN ("Case 1", "Case 2" ...) 或正则表达式来使您的查询更小

标签： influxdb

【解决方案1】：

你可以使用

ORDER BY SUBSTRING(cell, 6, 12) * 1;

SUBSTRING(test, 6, 12) 将从开头删除“Cell”，* 1 会将其余部分转换为数字。

【讨论】：

我尝试了你的建议，但我得到了InfluxDB Error: error parsing query: only ORDER BY time supported at this time