php - 根据字符串相关性和字符串顺序在数据库中搜索字符串

Question

我有一个 SQL 搜索语句的示例，其中我尝试按顺序查找字符串部分，相关性优先。所以它首先搜索“一二三”的完整字符串，然后继续搜索“一二”，然后是“二三”，最后一直搜索到一个单词，但它从不向后搜索。只有秩序。因此，例如，它永远不会搜索“三二一”，只会搜索“一二三”，我想知道是否可以将所有这些单个查询语句组合成一个查询？谢谢。

$text1 = "one";
$text2 = "two";
$text3 = "three";

SELECT text FROM tableName WHERE text LIKE "$text1 $text2 $text3"  
SELECT text FROM tableName WHERE text LIKE "$text1 $text2"
SELECT text FROM tableName WHERE text LIKE "$text2 $text3"
SELECT text FROM tableName WHERE text LIKE "$text1" 
SELECT text FROM tableName WHERE text LIKE "$text2" 
SELECT text FROM tableName WHERE text LIKE "$text3"  

Answer 1

是的。您可以搜索它们，然后按相关性排序。这是一种方法:

SELECT text
FROM tableName
WHERE text LIKE "$text1" OR
      text LIKE "$text2" OR
      text LIKE "$text3" 
ORDER BY (text LIKE "$text1 $text2 $text3") DESC,
         (text LIKE "$text1 $text2") DESC,
         (text LIKE "$text2 $text3") DESC,
         (text LIKE "$text1" ) DESC,
         (text LIKE "$text2" ) DESC,
         (text LIKE "$text3" ) DESC