Question

场景是我使用like运算符实现了搜索查询：

.. WHERE caption LIKE 'hello%' OR text LIKE '%hello'
      OR caption LIKE 'jame%' OR text LIKE 'jame%'

，表格类似于：

id | caption | text
---------------------
1  | Hi      | Hi Jame
2  | Hello   | Hello firend
3  | Jame    | Hello jame

所以我希望结果集的顺序如下：

id | caption | text
---------------------
3  | Jame    | Hello jame
1  | Hi      | Hi Jame
2  | Hello   | Hello firend

因为第3行与WHERE和LIKE子句的匹配更多。

有办法吗？

Answer 1

SELECT            *
FROM     ( SELECT *,
                 CASE
                         WHEN caption LIKE 'hello%' OR text LIKE '%hello'
                         THEN 1
                         WHEN caption LIKE 'jame%' OR text LIKE 'jame%'
                         THEN 2                         
                         ELSE 0
                 END AS weight
         FROM    your_table
         )
         q
WHERE    q.weight > 0
ORDER BY q.weight

Answer 2

试试这个

     WHERE caption LIKE 'hello%' OR text LIKE '%hello'
  OR caption LIKE 'jame' OR text LIKE 'jame'
  ORDER BY caption DESC

或更容易

     WHERE caption LIKE 'hello' 
  OR caption LIKE 'jame'
  ORDER BY caption DESC

按照like子句中的匹配数量命令mysql结果集

2 个答案: