mysqli 查询以计算每个数据库记录中的多个特定单词

Question

我需要一些帮助来计算记录标题字段中的多个特定单词。

这是我的查询

SELECT
    SUM(CASE WHEN `title` LIKE '%fish%' THEN 1 ELSE 0 END) AS count1,
FROM tbl_recipes
GROUP BY recipeID

这是有效的，但如果我想计算多个单词，我不确定我如何实现这一点。

我尝试过类似的方法

SELECT
    SUM(CASE WHEN title LIKE '%fish%' OR WHEN title LIKE '%soup%' THEN 1 ELSE 0 END) AS count1,
FROM tbl_recipes
GROUP BY recipeID

但这引发了一个异常，有谁知道计算数据库字段中特定单词的多个实例的正确方法。

最多可以有 6 个单词需要计数，我需要将它们全部计数为相同的计数，而不是单独计数 :)

谢谢

Answer 1

对于个人计数，您必须尝试这样的事情：-

SELECT
SUM(CASE WHEN title LIKE '%fish%' THEN 1 ELSE 0 END) AS count1,
SUM(CASE WHEN title LIKE '%soup%' THEN 1 ELSE 0 END) AS count2,
SUM(CASE WHEN title LIKE '%fish%' THEN 1 ELSE 0 END) AS count1 +
SUM(CASE WHEN title LIKE '%soup%' THEN 1 ELSE 0 END) AS count2 AS TOTAL
FROM tbl_recipes
GROUP BY recipeID