Mysql Wordpress：如果其他列具有特定值，如何在sql列中查找字符串

注：SQL NOOB

我正在使用以下查询在我的wp_posts table>post_content列中查找字符串的所有实例：

SELECT LENGTH(post_content) - LENGTH(REPLACE(post_content,'string I want to query','')) AS occurs FROM wp_posts WHERE post_content LIKE '%string I want to query%'

这非常有效，但我想将查询限制为仅返回值为

type

的出现在另一列中：

post\u type

这是我想到的，但它不起作用：

SELECT LENGTH(post_content) - LENGTH(REPLACE(post_content,'string I want to query','')) Where post_type = 'type' AS occurs FROM wp_posts WHERE post_content LIKE '%string I want to query%'

---

这是其他人的答案。只需在查询的

WHERE

部分添加

和

：

SELECT LENGTH(post_content) - LENGTH(REPLACE(post_content,'string I want to query','')) AS occurs FROM wp_posts WHERE post_content LIKE '%string I want to query%' AND post_type = 'type'