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Php 与mysql中的数字相反以文字显示的匹配_Php_Mysql_Database_Mysqli - Fatal编程技术网

Php 与mysql中的数字相反以文字显示的匹配

Php 与mysql中的数字相反以文字显示的匹配,php,mysql,database,mysqli,Php,Mysql,Database,Mysqli,我有一个select语句,它试图从数据库中选择匹配项,但在我得到结果后,匹配项是以文字表示的,而不是以数字表示的 SELECT DATA , "CASE WHEN data LIKE '%one two%' THEN 2 ELSE CASE WHEN data LIKE '%one%' THEN 1 ELSE 0 END END END" AS 'matches' FROM remember LIMIT 0 , 30 结果: 列匹配: "CASE WHEN data LIKE '%

我有一个select语句,它试图从数据库中选择匹配项,但在我得到结果后,匹配项是以文字表示的,而不是以数字表示的

SELECT DATA ,  
"CASE WHEN data LIKE  '%one two%' THEN 2 
ELSE CASE WHEN data LIKE '%one%' THEN 1
ELSE 0
END
END
END" AS  'matches'
FROM remember
LIMIT 0 , 30
结果:

列匹配:

"CASE WHEN data LIKE  '%love%' THEN 2" ELSE CASE W...
"CASE WHEN data LIKE  '%love%' THEN 2" ELSE CASE W...
"CASE WHEN data LIKE  '%love%' THEN 2" ELSE CASE W...
2
1
0
预期结果:

列匹配:

"CASE WHEN data LIKE  '%love%' THEN 2" ELSE CASE W...
"CASE WHEN data LIKE  '%love%' THEN 2" ELSE CASE W...
"CASE WHEN data LIKE  '%love%' THEN 2" ELSE CASE W...
2
1
0

您不需要多次使用CASE:

SELECT CASE WHEN data LIKE  '%one two%' THEN 2 
            WHEN data LIKE '%one%' THEN 1
            ELSE 0 
            END AS  'matches'

案例前的双引号是什么?这真的是一个真实的、不受限制的问题吗?@VolkerK-Huh?如果字符串前后没有双引号,数据库将抛出一个错误。使用这些引号,您将返回字符串文字作为结果。@VolkerK那么,您的建议是什么?@VolkerK我做错了什么?谢谢!我得找个地方开始了,很高兴我能帮上忙D