I'm trying to run the following query in SQLite 3:
SELECT *,
DISTANCE(latitude, longitude, ?, ?) AS "distance"
FROM "country"
WHERE "id" NOT LIKE ?
HAVING "distance" <= ?
ORDER BY "distance" ASC;
But I get the following error:
SQLSTATE[HY000]: General error: 1 a GROUP BY clause is required before HAVING
I don't understand why SQLite wants me to group results, but still I tried the following:
SELECT *,
DISTANCE(latitude, longitude, ?, ?) AS "distance"
FROM "country"
WHERE "id" NOT LIKE ?
GROUP BY "id"
HAVING "distance" <= ?
ORDER BY "distance" ASC;
And I also tried this:
SELECT *,
DISTANCE(latitude, longitude, ?, ?) AS "distance"
FROM "country"
WHERE "id" NOT LIKE ?
GROUP BY "distance"
HAVING "distance" <= ?
ORDER BY "distance" ASC;
No errors, but all records were returned (even those having "distance" > ?
). I also tried doing:
SELECT *,
DISTANCE(latitude, longitude, ?, ?) AS "distance"
FROM "country"
WHERE "id" NOT LIKE ?
AND "distance" <= ?
ORDER BY "distance" ASC;
Same output, all records were returned. I've double checked - the distance is being correctly calculated... I've no idea what's wrong with this query, can someone help me out?
You can't specify a HAVING
clause without having specified a GROUP BY
clause. Use:
SELECT *,
DISTANCE(latitude, longitude, ?, ?) AS dist
FROM COUNTRY c
WHERE c.id NOT LIKE ?
AND DISTANCE(c.latitude, c.longitude, ?, ?) <= ?
ORDER BY dist;
If you don't want to call DISTANCE more than once, you can use a subquery:
SELECT x.*
FROM (SELECT c.*,
DISTANCE(latitude, longitude, ?, ?) AS dist
FROM COUNTRY c
WHERE c.id NOT LIKE ?) x
WHERE x.dist <= ?
ORDER BY dist;