php - 根据来自多列的 LIKE 匹配项数量对 SQL 结果进行排序

Question

SELECT id 
FROM table 
WHERE fistname LIKE CONCAT('%',?,'%') 
   OR secondname LIKE CONCAT('%',?,'%') 
   OR middlename LIKE CONCAT('%',?,'%')");

$stmt->bind_param("sss", $first, $second, $middle);

我希望能够对返回的结果进行排序，以便它们按匹配总数的顺序显示。

例如:

  id | firstname |  secondname   |  middlename    
------------------------------------------------    
  1  |  Thomas   | Smith       |   John    
  2  |  Bob      | Smith       |   John

对于 vars $first = "Thomas", $second = "Smith", $middle="John"，结果将按顺序 1,2 排序

对于变量 $first = "Bob", $second = "Smith", $middle="Peter"，结果将按顺序 2,1 排序

等...

谢谢!

Answer 1

ORDER BY
       CASE WHEN firstname  LIKE CONCAT('%',?,'%') THEN 1 ELSE 0 END +
       CASE WHEN secondname LIKE CONCAT('%',?,'%') THEN 1 ELSE 0 END +
       CASE WHEN middlename LIKE CONCAT('%',?,'%') THEN 1 ELSE 0 END DESC