Major issues with a query - sql

Question

I have a query
SELECT
ZEML.ICC_CODE AS ICC_CODE
,SUM(CS.TOT_HOURS) AS TOT_HOURS
,SUM(CS.NUM_INCIDENT_ALL) AS NUM_INCIDENTS
,(VALUE(FLOAT(SUM(CS.NUM_INCIDENT_ALL)) * 200000 / SUM(TOT_HOURS)
,0)) AS INC_RATE
FROM TR.CLAIMS_SUMM CS
INNER JOIN TR.LOCATION_MASTER LM
ON LM.LOCATION = CS.LOCATION
AND CS.LOCATION < '900'
LEFT JOIN TR.LOCATION_ASSIGNMENTS DISTRICT
ON DISTRICT.LOCATION = LM.LOCATION
AND DISTRICT.ASSIGNMENT_TYPE = 'District'
LEFT JOIN TR.LOCATION_ASSIGNMENTS TERRITORY
ON TERRITORY.LOCATION = LM.LOCATION
AND TERRITORY.ASSIGNMENT_TYPE = 'Territory'
LEFT JOIN TR.EMPL_CLAIMS ZEML
ON CS.LOCATION = ZEML.LOCATION
AND ZEML.TYPE = 'WC'
AND ZEML.STATUS <> 'V'
AND ZEML.CLAIM_ACTION NOT IN ('D','F','I','H')
WHERE CS.DW_DATE BETWEEN '01/01/2014'
AND '05/31/2014'
AND (MONTH(ZEML.DATE_OF_INCIDENT) = MONTH(CS.DW_DATE)
AND YEAR(ZEML.DATE_OF_INCIDENT) = YEAR(CS.DW_DATE))
GROUP BY ZEML.ICC_CODE
UNION
SELECT
'OTHER' AS ICC_CODE
, 0 AS TOT_HOURS
, 0 AS NUM_INCIDENTS
, 0 AS INC_RATE
FROM SYSIBM.SYSDUMMY1
WHERE 1 = 1
ORDER BY 1
in my union where I made an other I want to select everything else from the tr.empl_claims table and store it in the other from the union because this is what I have many other ICC codes without incidents on them and I am doing calculations on our incident rate and hourse based off of all the data but my query right now is only selecting the ones that currently is having incidents which is throwing off my calculations.

Answer 1

From your use of FROM SYSIBM.SYSDUMMY1 I believe you are using DB2 database. If yes, you can use CTE (common table expression) to achieve the desired result like
WITH cte1 AS
(
SELECT
ZEML.ICC_CODE AS ICC_CODE
,SUM(CS.TOT_HOURS) AS TOT_HOURS
,SUM(CS.NUM_INCIDENT_ALL) AS NUM_INCIDENTS
,(VALUE(FLOAT(SUM(CS.NUM_INCIDENT_ALL)) * 200000 / SUM(TOT_HOURS)
,0)) AS INC_RATE
FROM TR.CLAIMS_SUMM CS
... <rest of the code> ...
)
select * from cte1
UNION ALL
SELECT
ICC_CODE
, 0 AS TOT_HOURS
, 0 AS NUM_INCIDENTS
, 0 AS INC_RATE
FROM TR.EMPL_CLAIMS
WHERE ICC_CODE NOT IN
(
SELECT distinct ICC_CODE
FROM cte1
)
ORDER BY 1
SideNote: You are joining the same table LOCATION_ASSIGNMENTS twice (as below) which is not needed.
LEFT JOIN TR.LOCATION_ASSIGNMENTS DISTRICT
ON DISTRICT.LOCATION = LM.LOCATION
AND DISTRICT.ASSIGNMENT_TYPE = 'District'
LEFT JOIN TR.LOCATION_ASSIGNMENTS TERRITORY
ON TERRITORY.LOCATION = LM.LOCATION
AND TERRITORY.ASSIGNMENT_TYPE = 'Territory'
This can be transformed to below using a IN operator
LEFT JOIN TR.LOCATION_ASSIGNMENTS DISTRICT
ON DISTRICT.LOCATION = LM.LOCATION
AND DISTRICT.ASSIGNMENT_TYPE IN ('District', 'Territory')
See more about Common Table Expression in DB2 Here.
Hope this helps.