有having子句如何在组中使用或调节

Question

How we can use OR condition in group by clause below is my sql query

SELECT count(id) as num_rows, 
        (3959 * acos ( cos ( radians(41.766908)) * cos( radians( lat ) ) * cos( radians( lon ) - radians(-81.1526976)) + sin ( radians(41.766908) ) * sin( radians( lat ) ))) AS distance
FROM (`items`) 
WHERE `status` = 1 
GROUP BY `distance` 
HAVING `distance` <=50

In this query I have to add OR condition as well with group by clause that is

 (GROUP BY `distance` HAVING `distance` <=50 OR `nationwide`=1)

How we can execute above query ??

Below is my result - and I have to add OR condition in having by clause

id nationwide distance

1 2 22.4347083649522

1 2 46.8127635462102

8 2 10.0201103523007

13 1 11.888890536392

Answer 1

GROUP BY `distance`, `nationwide`
HAVING `distance` <= 50 OR `nationwide` = 1
;

Note this will GROUP the COUNT s by both field values; if you want the count of all where nationwide = 1 and the count of all where distance >= 50 separately, you will need two separate queries... and a UNION really wouldn't make sense, since distance will be irrelevant in the first, and nationwide irrelevant in the latter.

Answer 2

Just use a comma (,)

(GROUP BY distance HAVING distance <=50, nationwide =1)

Answer 3

可能会对您有帮助

GROUP BY `distance`(HAVING `distance` <= 50 OR `nationwide` = 1);