PHP search keywords in multiple table column

Question

I have below search script to perform multiple column search in table, but the results is not as expected, few of data rows are show with status = new and company name = demo , can someone please point out what is wrong for below query? what is more accurate query to perform a search with these conditions?

SELECT * FROM messageboard AS m LEFT JOIN users AS u ON m.author_id=u.user_id 
WHERE m.status='approved' 
AND u.user_email LIKE '%demo%' 
OR u.company_name LIKE '%demo%' 
OR m.subject LIKE '%demo%' 
ORDER BY m.posted_time DESC

Thanks a lot.

Answer 1

SELECT * FROM messageboard AS m LEFT JOIN users AS u ON m.author_id=u.user_id 
WHERE m.status='approved' 
AND (u.user_email LIKE '%demo%' 
OR u.company_name LIKE '%demo%' 
OR m.subject LIKE '%demo%' )
ORDER BY m.posted_time DESC

Answer 2

我建议用方括号组织您的AND和OR条件。