Question

Have two tables:

CREATE  TABLE IF NOT EXISTS `issue_details` (
    `id` INT NOT NULL AUTO_INCREMENT ,
    amt_offer_dlr INT NOT NULL DEFAULT 9999 COMMENT '564,510,000',
   maturity  DATE NOT NULL DEFAULT '1111-11-11' COMMENT '06/28/2012' ,
    fk_cusip6 VARCHAR(6) NOT NULL DEFAULT '' COMMENT '' ,
  PRIMARY KEY (id),
  CONSTRAINT con_issue_details__issuers FOREIGN KEY (fk_cusip6) REFERENCES issuers    (fk_cusip6) ON DELETE NO ACTION ON UPDATE CASCADE
)
ENGINE = InnoDB;

CREATE  TABLE IF NOT EXISTS `identifiers` (
  id     INT NOT NULL AUTO_INCREMENT ,
  fk_cusip6 VARCHAR(6)  NOT NULL DEFAULT 'NA' ,
  PRIMARY KEY (id) ,
  CONSTRAINT con_ident__cusip6  FOREIGN KEY (fk_cusip6) REFERENCES cusip_6 (cusip6) ON DELETE NO ACTION ON UPDATE CASCADE ,
)
COMMENT ''
 ENGINE = InnoDB;

issue_details table:
note: each id is different
can have multiple identical fk_cusip6 numbers

+-----+--------------+------------+----------------+
| id  | maturity     | fk_cusip6  |  amt_offer_dlr |
+-----+--------------+------------+----------------+
|  1  | 2013-06-28   | 567090     |  1000          |
|  2  | 2014-06-05   | 567090     |  1000          |
|  3  | 2013-06-05   | 567100     |  2500          |
|  3  | 2014-06-05   | 567100     |  2500          |
+-----+--------------+------------+----------------+

identifier table:
note: each fk_cusip6 number is different

+--------+-----------+
| id     | fk_cusip6 |
+--------+-----------+
| 131472 | 567090    |
| 131473 | 567100    |
+--------+-----------+

I need to generate a query that will match each instance of fk_cusip6 in the identifier table, and then sum amt_offer_dlr for all instances that have the same fk_cusip6 in the issue_details table. The end result should be:

+--------------+---------+------------------------+
| ide.id | isd.fk_cusip6 |  SUM(isd.Amt_Offer_Dlr |
+--------------+---------+------------------------+
| 131472 | 567090        | 2000                   |
| 131473 | 567100        | 5000                   |
+--------------+---------+------------------------+

I tried:

SELECT CURRENT_DATE, FORMAT(SUM(isd.Amt_Offer_Dlr),0) 'Current Out Standing Debt:'
from muni.issue_details isd
INNER JOIN identifiers ide ON ide.fk_cusip6 = isd.fk_cusip6 AND  isd.fk_cusip6 = '567541'
where isd.maturity > CURRENT_DATE
;

This is summing all of the columns.

I think I need a sub-query, but am stuck on the details.

Thanks

Answer 1

Try this:

SELECT
    i.id,
    i.fk_cusip6,
    x.amt_offer_dlr_sum

FROM identifiers i

INNER JOIN (
    SELECT
        id.fk_cusip6,
        SUM(id.amt_offer_dlr) AS amt_offer_dlr_sum
    FROM issue_details id
    GROUP BY id.fk_cusip6
) x
ON x.fk_cusip6 = i.fk_cusip6;