joining two table not working as expected - mysql

Question

I have been working on this for about two days now and cant seem to figure it out so I would love some help.
I have two tables:
mysql> select id, date, volume, symbol_id from control_quotedaily limit 5;
+-------+---- -------+----------+-----------+
| id | date | volume | symbol_id |
+-------+------------+----------+-----------+
| 13263 | 2017-11-02 | 7800191 | AXISBANK |
| 13264 | 2017-11-02 | 9303981 | SBIN |
| 13265 | 2017-11-02 | 8013536 | HDFCBANK |
| 13266 | 2017-11-03 | 9642624 | AXISBANK |
| 13267 | 2017-11-04 | 19642327 | AXISBANK |
+-------+------------+----------+-----------+
5 rows in set (0.00 sec)
14 rows in set (0.01 sec)
mysql> select * from control_oidaily
+-----------+------------+-------------+--------------+
| symbol_id | date | expiry_date | val_in_lakhs |
+-----------+------------+-------------+--------------+
| AXISBANK | 2017-11-02 | 2017-11-30 | 166881.8 |
| AXISBANK | 2017-11-02 | 2017-12-28 | 2676.84 |
| AXISBANK | 2017-11-02 | 2018-01-25 | 97.13 |
| HDFCBANK | 2017-11-02 | 2017-11-30 | 76351.11 |
| HDFCBANK | 2017-11-02 | 2017-12-28 | 1509.48 |
| HDFCBANK | 2017-11-02 | 2018-01-25 | 0 |
| SBIN | 2017-11-02 | 2017-11-30 | 88654.3 |
| SBIN | 2017-11-02 | 2017-12-28 | 1060.51 |
| SBIN | 2017-11-02 | 2018-01-25 | 0 |
| AXISBANK | 2017-11-03 | 2017-11-30 | 87640.06 |
+-----------+------------+-------------+--------------+
So for every quote in the control_quotedaily table this is what I want:
closest expiry_date for that quote from the control_oidaily table
I want the val_in_lakhs for that expiry_date.
Eg: For date 2017-11-02, the closest expiry is 2017-11-30 and I want the val_in_lakhs (76351.11) returned.
This is what I am trying:
select o.date, o.expiry_date as expiry_date, o.symbol_id, q.date, q.symbol_id, o.val_in_lakhs, q.tottrdval, q.volume, q.symbol_id
FROM control_oidaily o
JOIN ( select o.date, MIN(expiry_date) as expiry_date, symbol_id
FROM control_oidaily o
GROUP by o.date,o.symbol_id
ORDER BY o.date asc) as ed
ON ed.date = o.date
AND ed.symbol_id = o.symbol_id
AND ed.expiry_date = o.expiry_date
JOIN control_quotedaily q
ON q.date = ed.date
AND q.symbol_id = ed.symbol_id
This is the output I am expecting:
+-------+------------+----------+-----------+--------------+--------------+
| id | date | volume | symbol_id | expiry_date | val_in_lakhs |
+-------+------------+----------+-----------+--------------+--------------+
| 13263 | 2017-11-02 | 7800191 | AXISBANK | 2017-11-30 | 166881.8 |
| 13264 | 2017-11-02 | 9303981 | SBIN | 2017-11-30 | 88654.3 |
| 13265 | 2017-11-02 | 8013536 | HDFCBANK | 2017-11-30 | 76351.11 |
| 13266 | 2017-11-03 | 9642624 | AXISBANK | 2017-11-30 | 87640.06 |
+-------+------------+----------+-----------+--------------+--------------+

Answer 1

In a Derived Table, get the closest_expiry_date (minimum value of expiry_date), for a grouping of symbol_id and date, from control_oidaily table.
Join this with the control_quotedaily table on symbol_id and date, to get closest_expiry_date value for every row in the control_quotedaily table.
Now, use the same derived table again to join with control_oidaily table, matching up on date, expiry_date (with closest expiry date) and symbol_id to get val_in_lakhs.
You possibly want the following query:
SELECT q.id,
q.`date`,
q.volume,
q.symbol_id,
o1.expiry_date,
o1.val_in_lakhs
FROM control_quotedaily AS q
JOIN (SELECT o2.`date`,
o2.symbol_id
MIN(o2.expiry_date) as closest_expiry_date
FROM control_oidaily AS o2
GROUP by o2.`date`, o2.symbol_id
) AS dt
ON dt.`date` = q.`date`
AND dt.symbol_id = q.symbol_id
JOIN control_oidaily AS o1
ON dt.`date` = o1.`date`
AND dt.symbol_id = o1.symbol_id
AND dt.closest_expiry_date = o1.expiry_date