MySQL 查询字符串包含
我一直试图弄清楚如何使用 MySQL 进行查询，以检查某个列中的值(字符串 $haystack )是否包含某些数据(字符串 $needle)，像这样:
I've been trying to figure out how I can make a query with MySQL that checks if the value (string $haystack ) in a certain column contains certain data (string $needle), like this:
SELECT *
FROM `table`
WHERE `column`.contains('{$needle}')
在PHP中，该函数被称为substr($haystack, $needle)，所以可能:
In PHP, the function is called substr($haystack, $needle), so maybe:
WHERE substr(`column`, '{$needle}')=1
推荐答案
其实很简单:
SELECT *
FROM `table`
WHERE `column` LIKE '%{$needle}%'
% 是任何字符集(无、一个或多个)的通配符.请注意，这在非常大的数据集上可能会变慢，因此如果您的数据库增长，您将需要使用全文索引.
The % is a wildcard for any characters set (none, one or many). Do note that this can get slow on very large datasets so if your database grows you'll need to use fulltext indices.
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