這是非常尷尬的,從處理圖像的工作,但它應該讓你你所要求的東西。也不確定你想要'Str。#' - 你用22給出的例子圖像,因爲每個結果都不是最有用的。
select
District.District_Name as District,
sum(Learner_History.`Status` = 'catchment') as Catchment,
sum(Learner_History.`Status` = 'fresher') as Fresher,
sum(Learner_History.`Status` = 'dropout') as Dropout,
sum(Learner_History.`Status` = 'missout') as Missout,
sum(Learner_History.`Status` = 'mainstrain') as Mainstrain,
sum(Learner_History.`Status` = 'pec') as PEC
from District
left join School on School.District_ID = District.District_ID
left join Learner on Learner.School_ID = School.School_ID
left join Learner_History on Learner_History.Learner_ID = Learner.Learner_ID
group by District.District_Name;
大多數人想要格式化文本而不是圖像。 – jarlh
沒有圖片謝謝。請參閱https://meta.stackoverflow.com/questions/333952/why-should-i-provide-an-mcve-for-what-seems-to-me-to-be-a-very-simple-sql-query – Strawberry
有人可以請建議解決方案? –