can put alias in fulltext query? - full-text-search

Question

This is FULLTEXT query, searching food from restaurants-menu
$query = "SELECT *, MATCH(food_row) AGAINST('cheese' IN BOOLEAN MODE) AS yyy
FROM table_menu
WHERE MATCH(food_row) AGAINST('cheese' IN BOOLEAN MODE)
AND restaurant IN (SELECT id FROM table_restaurant
WHERE country IN ('FR') AND town='paris')";
I want to modify. Considering Max distance = 5km. this is working.
latitude and longitude are of user (google geocode), lat and lng of restaurants in mysql (they are in table_restaurant)
$xxx = " (((acos(sin((".$latitude."*pi()/180)) *
sin((`lat`*pi()/180))+cos((".$latitude."*pi()/180)) *
cos((`lat`*pi()/180)) * cos(((".$longitude."- `lng`)
*pi()/180))))*180/pi())*60*1.1515*1.609344) ";
$query .= " AND ($xxx <= 5 )"; // 5 = the max distance
yes working, but I can't write each restaurant distance in the output.
I don't know how insert 'AS distance' If not FULLTEXT, would be easy.
$query = "SELECT *, $xxx as distance FROM table2 WHERE ... ORDER BY distance ";
output: distance = row['distance']
how can I do? Sorry for my english, tanks

Answer 1

I assume the reason you're modifying the query is because the distance test is optional.
Try it like this:
if ($max_dist) {
$dist = " (((acos(sin((".$latitude."*pi()/180)) *
sin((`lat`*pi()/180))+cos((".$latitude."*pi()/180)) *
cos((`lat`*pi()/180)) * cos(((".$longitude."- `lng`)
*pi()/180))))*180/pi())*60*1.1515*1.609344) ";
$having = "HAVING distance < $max_dist";
} else {
$dist = " NULL ";
$having = '';
}
$query = "SELECT m.*, MATCH(food_row) AGAINST('cheese' IN BOOLEAN MODE) AS yyy,
$dist AS distance
FROM table_menu m
JOIN table_restaurant r ON m.restaurant = r.id
WHERE MATCH(food_row) AGAINST('cheese' IN BOOLEAN MODE)
AND country IN ('FR') AND town='paris'
$having";