MySQL:在多列中查找相同的字符串

Question

我正在尝试制作类似搜索页面的功能.我想查询"ColumnA"和"ColumnB"以及"ColumnC"和"ColumnD"中的"查询".并在任何列中选择包含单词/短语"query"的行.这似乎有效:

   SELECT * FROM projects
   WHERE 
   category LIKE '%query%' OR
   name LIKE '%query%' OR 
   description LIKE '%query%'OR 
   keywords LIKE '%query%' OR 
   'type' LIKE '%query%'  
   ORDER BY name ASC   

但它很冗长.有没有更容易或更有效的方法来做到这一点？

Answer 1

简单的解决方法:

SELECT * 
FROM projects 
WHERE 
    CONCAT(category,name,description,keywords,type) LIKE '%query%' 
ORDER BY name ASC;

如果需要,您可以在列之间添加分隔符:

SELECT * 
FROM projects 
WHERE 
    CONCAT(category,"|",name,"|",description,"|",keywords,"|",type) LIKE '%query%' 
ORDER BY name ASC;

您还可以使用全文搜索(您需要创建全文索引,如下所述:多列上的FULLTEXT INDEXES如何工作？)

SELECT *, MATCH (category,name,description,keywords,type) AGAINST ('query') AS score FROM projects WHERE MATCH (category,name,description,keywords,type) AGAINST ('query');