如何將大寫字母大寫但保留另一個不區分大小寫？

Question

這裏是我的查詢：

select invoice_number, invoice_date, invoice_total, invoice_due_date, date_format(invoice_due_date, 'Due in %M %Y') as month_due 
from active_invoices 

order by invoice_total desc 

Here's my output

我怎樣才能使它看起來像這樣？

Wanted output

Answer 1

使用case語句對過濾六月七月和應用不同的大寫的條件。

SELECT invoice_number 
    , invoice_date 
    , invoice_total 
    , invoice_due_date 
    , CASE 
     WHEN month(invoice_due_date) = 7 
      THEN date_format(invoice_due_date, 'Due in %M %Y') 
     WHEN month(invoice_due_date) = 6 
      THEN date_format(invoice_due_date, 'DUE IN %M %Y') 
     END AS month_due 
FROM active_invoices 
ORDER BY invoice_total DESC