GROUP_CONTACT value use as a condition with other column

Question

I have one case where I want to use group_contact value as a condition with other column.

please have a look the following code which I applied but return reference to group function.

take an one example as following.

SELECT 
    GROUP_CONCAT(id) AS loca_id,
    (SELECT 
            SUM(loc.total_qty)
        FROM
            locations_assign AS loc
        WHERE
            id IN (loca_id)) AS pend_qty
FROM
    locations_assign
WHERE
    putaway_type = 3

Is there any way where I can achieve this?

Please help me for the same.

Answer 1

For the IN clause you don't need a GROUP_CONCAT a SELECT sufficed

SELECT 
    GROUP_CONCAT(id) AS loca_id,
    (SELECT 
            SUM(loc.total_qty)
        FROM
            locations_assign AS loc
        WHERE
            id IN (SELECT 
                    id
                FROM
                    locations_assign
                WHERE
                    putaway_type = 3)) AS pend_qty
FROM
    locations_assign
WHERE
    putaway_type = 3

Answer 2

GROUP_CONCAT() returns a comma separated list of ids which is a string and can not be used with the operator IN .
Instead use FIND_IN_SET() :

SELECT 
  t.loca_id,
  SUM(loc.total_qty) AS pend_qty
FROM locations_assign AS loc
CROSS JOIN (
  SELECT GROUP_CONCAT(id) AS loca_id
  FROM locations_assign
  WHERE putaway_type = 3
) t
WHERE FIND_IN_SET(loc.id, t.loca_id)

Answer 3

IN doesn't work with a comma-separated strings, but with a list of separate values. As the list is just the IDs you are selecting anyway, it seems you only want a common aggregation: the list of IDs and the quantity sum:

SELECT 
  GROUP_CONCAT(id) AS loca_id,
  SUM(total_qty) AS pend_qty
FROM locations_assign
WHERE putaway_type = 3;