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MySQL: 案件评价不正确。 我哪里出错了?
原标题:MySQL: Case not evaluating correctly. Where did I went wrong?

这是用于查找关键字“部门 2” 的自动完整的函数的查询

SELECT display_text,token, relevancy , 
(CASE token 
    WHEN token =  sector  THEN relevancy*1000 
    WHEN token =  2  THEN relevancy*1000 
    ELSE relevancy / 100 
END) as real_relevancy 
FROM location_search WHERE display_text LIKE  %sector%  AND display_text LIKE  %2%  
ORDER BY real_relevancy DESC

The table have five fields: id , area_id, display_text, token and relevancy. display text is what i want to show in auto complete search result. And token contains the display text split by spaces.

表格中将有三个条目。

id    |  area_id | display_text    | token  | relevancy
6     |   234    | Sector 2 Noida  | sector | 441
7     |   234    | Sector 2 Noida  | 2      | 986
8     |   234    | sector 2 Noida  | noida  | 660

对于所有其他显示区域来说也是如此。通过询问我在这里要做什么, 这一点非常清楚, 上面的结果更加相关。

问题是,第一种情况是真实的,在象征品为杂交品或2类的随机情况中被排除。

就像第一场暴风雨在BAFet是

display_text                    |   token   |  relevancy   |  real_relevancy
Sector 29 - Powergrid , Gurgaon | Powergrid |  789         |  789000

为什么会这样?我是不是搞错了?

问题回答

我尝试了几件事情 并改变了案件条件 从象征性 = 部门 改为只是部门... 它现在的工作。

所以新的查询看起来是这样的 :

SELECT display_text,token, relevancy , 
(CASE token 
    WHEN  sector  THEN relevancy*1000 
    WHEN  2  THEN relevancy*1000 
    ELSE relevancy / 100 
END) as real_relevancy 
FROM location_search WHERE display_text LIKE  %sector%  AND display_text LIKE  %2%  
ORDER BY real_relevancy DESC

的确是愚蠢的错误。





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