通配符SQL查询-缩小搜索结果

Question

I am making a wildcard search query on the Wordpress database for "Post Title".

My results would vary:

• "Post Title - 1"
• "Post Title 2"
• "Post Title #3"
• "After the Post Title 1"
• "Before the Post Title 1"
• "After the Post Title 2"
• "Before the Post Title 2"

I would like to limit my wildcard results to:

• "Post Title - 1"
• "Post Title 2"
• "Post Title #3"

Any idea or algorithm I can achieve this?

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Code

$query = "SELECT ID, `post_title` FROM `wp_posts` WHERE `post_title` LIKE '%".$titleRequest."%'";

$results = $wpdb->get_results($query);

Answer 1

Modify the query like this:

$query = "SELECT ID, `post_title` FROM `wp_posts` WHERE `post_title` LIKE '".$titleRequest."%'";

$results = $wpdb->get_results($query);

The initial % means "match anything here" - but you do not want to do that, you want to match only things that start with the title requested. The second % is ok - you do want to match things after Post Title, after all.

Answer 2

在您的SQL查询中的WHERE子句中尝试以下操作：

WHERE FieldName LIKE 'Post Title%';

Answer 3

You will need to implement fuzzy logic in your search. But its a very complex algorithm, fortunately there are already some plugins that have implimented this algorithm like " Relevanssi ". Once installed it will override your current search mechanism and add its own, then you can modify it accordingly.