MySQL query : search keyword like %

Question

I was trying to query a database table by search keyword. My SQL is as follow:

SELECT * FROM some_table WHERE some_name LIKE '%$keyword%'

where $keyword is from PHP form POST data. The $keyword is already processed by real_escape_string function. I notice that it the $keyword is % , all records are selected. How can I search for the some_name field with % in the content?

Answer 1

You have to escape the literal % , as explained in the manual :

SELECT * FROM some_table WHERE some_name LIKE '%\%%';

Also note that you should escape the _ character the same way, as that's symbol for a single-character wild card.还请注意，您应该以相同的方式转义_字符，因为这是单字符通配符的符号。

Answer 2

You should escape % with \% in keyword