MySQL：是否可以在SELECT语句中插入Contains OR Like？

Question

我想在查询的SELECT语句（而不是WHERE语句）中使用LIKE或REGEX。

如果post_content包含'base64'，我想在查询输出中看到1。有可能吗？

SELECT post_content, length(post_content), LIKE('%base64%') AS contained 
FROM `wp_posts`
order by length(post_content) desc

Answer 1

您可以使用Case语句

SELECT post_content, length(post_content), 
(CASE WHEN post_content  LIKE('%base64%') then "contained " ELSE "not contained" END)  AS contained 
FROM `wp_posts`
order by length(post_content) desc

OR

SELECT post_content, length(post_content), 
 post_content  LIKE('%base64%')   AS contained 
FROM `wp_posts`
order by length(post_content) desc

DEMO