I have a table named users , and some of the columns are having null values which are user_country
, user_state_user_city
, user_area
, user_pincode
.
I want to sort the null values by count.
For example :
user_id user_country user_state user_city user_area user_pincode
1 1 1 1 1 1 - all values
2 1 1 1 2 - 1 empty or null
3 1 1 - 3 empty or null
4 1 1 1 - 2 empty or null
5 1 - 4 empty or null
It should sorty by like below : Expecting output
user_id user_country user_state user_city user_area user_pincode
2 1 1 1 1 - 1 empty or null
4 1 1 1 - 2 empty or null
3 1 1 - 3 empty or null
5 1 - 4 empty or null
1 1 1 1 1 1 - all values
My code :
$where1 = "user_country IS NOT NULL AND user_state IS NOT NULL AND user_city IS NOT NULL AND user_area_name IS NOT NULL AND user_area_pincode IS NOT NULL AND user_country!='' AND user_state!='' AND user_city!='' AND user_area_name!='' AND user_area_pincode!=''";
$this->db->where($where1);
$order = "user_city IS NOT NULL";
$this->db->order_by($order,'desc');
You could use this query:
SELECT yourtable.*
FROM yourtable
ORDER BY
CONCAT(user_country,user_state,user_city,user_area,user_pincode) IS NOT NULL,
(user_country IS NULL) +
(user_state IS NULL) +
(user_city IS NULL) +
(user_area IS NULL) +
(user_pincode IS NULL)
Please see fiddle here .
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