MySQL似乎在if语句更改列的值之前对行进行排序，我需要在值更改后对其进行排序

Question

这个真实的查询

SELECT  IF(`AutomobilioMarke`='Vauxhall', 'Opel', `AutomobilioMarke`),
        `AutomobilioModelis`, `AutomobilioVariklis`, `kurTip`,
        `VarGal`, `GamintojoKodas`, `AutomobilioMetai`, `Kaina`,
        `ID`, `Kur`, `VArkliai`, `VariklioTuris`
    FROM  Detale AS p
    JOIN  AutomobiliuList AS r  ON r.KType = p.KTipas
    WHERE  (`AutomobilioMarke` != '')
      AND  (`KatId` = 4840  OR  `KatId` = 4844)
      AND  (`Quantity` != 0)
    ORDER BY  `AutomobilioMarke` ASC, `AutomobilioModelis` ASC,
              `GamintojoKodas` ASC, `AutomobilioMetai` ASC 

我认为问题出在：

SELECT IF(`Make`='Vauxhall', "Opel", `Make`) FROM Cars ORDER BY `Make` ASC

我得到这样的行排序：

• 欧宝 ....
• 标致....
• 雷诺 ....
• 漫游者....
• 欧宝 ....

我想要：

• 欧宝 ....
• 欧宝 ....
• 标致....
• 雷诺 ....
• 漫游者....

好像是先排序再改值，有没有办法先改值再排序？？？

或者排序改变排序，或者只是得到想要的值..

Answer 1

您没有为表达式返回的列设置别名：

IF(`AutomobilioMarke`='Vauxhall', 'Opel', `AutomobilioMarke`)

因此，如果您认为 ORDER BY 会按此表达式的结果排序，那么您就错了，因为它按表中的列 AutomobilioMarke 排序。
所以定义一个别名并在ORDER BY 子句中使用它：

SELECT 
  IF(`AutomobilioMarke`='Vauxhall', 'Opel', `AutomobilioMarke`) AS AutoMarke, 
  `AutomobilioModelis`, 
  `AutomobilioVariklis`, 
  `kurTip`, 
  `VarGal`, 
  `GamintojoKodas`, 
  `AutomobilioMetai`, 
  `Kaina`, 
  `ID`,
  `Kur`, 
  `VArkliai`, 
  `VariklioTuris` 
FROM Detale AS p JOIN AutomobiliuList AS r 
ON r.KType = p.KTipas 
WHERE(`AutomobilioMarke` != '') AND (`KatId` = 4840 OR `KatId` = 4844) AND (`Quantity` != 0)
ORDER BY AutoMarke ASC, `AutomobilioModelis` ASC, `GamintojoKodas` ASC, `AutomobilioMetai` ASC