Diviser des sommes avec différentes conditions WHERE

Question

J'ai besoin d'aide dans ma requête. Je suis en train de diviser une somme d'une colonne avec différentes conditions WHERE par exemple

SELECT 
    TO_CHAR(PS.REPORT_PERIOD_END_DATE, 'YYYY') AS YR, 
    SUM(T1.PRICE) AS COLUMN_1 
FROM TABLE_ONE T1 
    INNER JOIN SUB_STATUSES status ON status.SUB_ID = T1.ID 
    WHERE status.R_SUB_STATUS_CODE = 'COMPLETED' 
AND T1.TYPE = 'COMPANY' OR T1.TYPE = 'SMALL_BUSINESS' 
GROUP BY TO_CHAR(PS.REPORT_PERIOD_END_DATE, 'YYYY') 
ORDER BY TO_CHAR(PS.REPORT_PERIOD_END_DATE, 'YYYY') DESC 

DIVIDE BY 

SELECT 
TO_CHAR(PS.REPORT_PERIOD_END_DATE, 'YYYY') AS YR, 
    SUM(T1.PRICE) AS COLUMN_1 
from TABLE_ONE T1 
    INNER JOIN SUB_STATUSES status ON status.SUB_ID = T1.ID 
    WHERE status.R_SUB_STATUS_CODE = 'COMPLETED' 
AND T1.TYPE = 'LOT' OR T1.TYPE = 'LAND' 
GROUP BY TO_CHAR(PS.REPORT_PERIOD_END_DATE, 'YYYY') 
ORDER BY TO_CHAR(PS.REPORT_PERIOD_END_DATE, 'YYYY') DESC 

La première colonne retourne ceci:

2017 1094 
2016 89 
2015 95 
2014 101 
2013 113 
2012 173 
2011 191 
2010 165 

Answer 1

Utilisez une déclaration de cas au lieu d'une clause where. Les vérifications de requêtes externes se divisent par zéro.

SELECT yr, case when column_2 <> 0 then column_1/column2 else 0 end divcol 
FROM (
    SELECT 
    TO_CHAR(PS.REPORT_PERIOD_END_DATE, 'YYYY') AS YR, 
    SUM(case when t1.type in ('COMPANY', 'SMALL_BUSINESS') THEN T1.PRICE ELSE 0 END) as COLUMN_1, 
    SUM(case when t1.type in ('LOT', 'LAND') THEN T1.PRICE ELSE 0 end) AS COLUMN_2 
    FROM TABLE_ONE T1 
     INNER JOIN SUB_STATUSES status ON status.SUB_ID = T1.ID 
    WHERE status.R_SUB_STATUS_CODE = 'COMPLETED' 
    GROUP BY TO_CHAR(PS.REPORT_PERIOD_END_DATE, 'YYYY') 
) 
ORDER BY yr DESC