MySQL sort by number of occurrences

Question

I am doing a search in two text fields called Subject and Text for a specific keyword. To do this I use the LIKE statement. I have encount

Answer 1

// escape $keyword for mysql
$keyword = strtolower('Keyword');
// now build the query
$query = <<

Returns number of occurrences in each field and sorts by that.

The 'keyword' needs to be lower cased for this to work. I don't think it's really fast, performance wise as it needs to lower-case fields and there's no case-insensitive search in MySQL afaik.

You could index each news item (subject and text) by words and store in another table with news_id and occurrence count and then match against that.