mysql：使用like運算符選擇並按列名排序結果

Question

<?php

編輯：抱歉錯過了$。 語法錯誤-好的

$qry="SELECT * 
      FROM `tbl_postad` 
      WHERE category LIKE '% $car %'
        OR title LIKE '% $car %' 
        OR text LIKE '% $car %'";

但我希望輸出先按類別列出行，然后按標題列出，然后再進行描述。 有沒有不使用工會的東西嗎？謝謝。

例：

 id category title description   
  1    car 
  2    car
  3            car
  4            car
  5            car
  6                    car


?>

Answer 1

ORDER BY CASE WHEN category LIKE '% $car %' THEN 0
              WHEN title LIKE '% $car %' THEN 1
              WHEN description LIKE '% $car %' THEN 2
         END

Answer 2

您可以嘗試如下：

SELECT * 
FROM `tbl_postad` 
WHERE category LIKE '%car%' OR title LIKE '%car%' OR description LIKE '%car%'
ORDER BY (category LIKE '%car%') DESC,
     (title LIKE '%car%') DESC,
     (description LIKE '%car%') DESC;

Answer 3

您可以like =`一樣使用相同的思路：

SELECT * 
FROM `tbl_postad` 
WHERE category LIKE '% car %' OR title LIKE '% car %' OR text LIKE '% car %'
ORDER BY (category LIKE '% car %') DESC,
         (title LIKE '% car %') DESC,
         (text LIKE '% car %') DESC;

根據您的樣本數據，我假設您打算使用OR而不是AND 。