Question

我有一个字符串，其中包含一些像$string = 'one, two, "phrase three words"'这样的关键字我正在尝试使用以下方式进行全文搜索：

    SELECT *, MATCH (column) AGAINST ('$string') AS score, 
FROM table WHERE MATCH (column) AGAINST ('$string' IN BOOLEAN MODE) ORDER BY score DESC

当MySql返回结果时，关键字“短语三个单词”不匹配为短语，但其中的每个单词都匹配为单个。

我应该如何修改字符串或查询以接收整个短语匹配的结果？我已尝试使用stripslashes（）作为字符串，但结果是一样的。

Answer 1

正如MySQL手册所说：

包含在双引号（“”“）字符内的短语匹配只有字体包含短语的行，因为它是键入的。

让我们看一下示例表：

mysql> select * from articles;
+----+-----------------------+------------------------------------------+
| id | title                 | body                                     |
+----+-----------------------+------------------------------------------+
|  1 | PostgreSQL Tutorial   | DBMS stands for DataBase ...             |
|  2 | How To Use MySQL Well | After you went through a ...             |
|  3 | Optimizing MySQL      | In this tutorial we will show ...        |
|  4 | 1001 MySQL Tricks     | 1. Never run mysqld as root. 2. ...      |
|  5 | MySQL vs. YourSQL     | In the following database comparison ... |
|  6 | MySQL Security        | When configured properly, MySQL ...      |
+----+-----------------------+------------------------------------------+

mysql> SELECT * FROM articles WHERE MATCH (title,body)
     AGAINST ('"database comparison"' IN BOOLEAN MODE);

+----+-------------------+------------------------------------------+
| id | title             | body                                     |
+----+-------------------+------------------------------------------+
|  5 | MySQL vs. YourSQL | In the following database comparison ... |
+----+-------------------+------------------------------------------+

当引用单词时，顺序很重要：

mysql> SELECT * FROM articles WHERE MATCH (title,body)
     AGAINST ('"comparison database"' IN BOOLEAN MODE);

Empty set (0.01 sec)

当我们删除引号时，它会搜索包含“database”或“comparison”字样的行：

mysql> SELECT * FROM articles WHERE MATCH (title,body)
     AGAINST ('database comparison' IN BOOLEAN MODE);

+----+---------------------+------------------------------------------+
| id | title               | body                                     |
+----+---------------------+------------------------------------------+
|  1 | PostgreSQL Tutorial | DBMS stands for DataBase ...             |
|  5 | MySQL vs. YourSQL   | In the following database comparison ... |
+----+---------------------+------------------------------------------+

现在订单无关紧要：

mysql> SELECT * FROM articles WHERE MATCH (title,body)
     AGAINST ('comparison database' IN BOOLEAN MODE);

+----+---------------------+------------------------------------------+
| id | title               | body                                     |
+----+---------------------+------------------------------------------+
|  1 | PostgreSQL Tutorial | DBMS stands for DataBase ...             |
|  5 | MySQL vs. YourSQL   | In the following database comparison ... |
+----+---------------------+------------------------------------------+

如果我们想要获取包含单词“PostgreSQL”或短语“数据库比较”的行，我们应该使用此请求：

mysql> SELECT * FROM articles WHERE MATCH (title,body)
     AGAINST ('PostgreSQL "database comparison"' IN BOOLEAN MODE);

+----+---------------------+------------------------------------------+
| id | title               | body                                     |
+----+---------------------+------------------------------------------+
|  1 | PostgreSQL Tutorial | DBMS stands for DataBase ...             |
|  5 | MySQL vs. YourSQL   | In the following database comparison ... |
+----+---------------------+------------------------------------------+

fiddle

确保您搜索的字词不在list of stopwords中，但会被忽略。

使用包含关键字的字符串在PHP中进行MySql全文搜索

1 个答案: