How to return the value 0 for no data using the County?
Hi allI used this query to count the number of records for each month of the year:
SELECT DISTINCT COUNT (I.information_sid) COUNT, TO_DATE (TO_CHAR (INSERT_DATE, 'MM'), 'MM') MONTH
INFORMATION I
TO_DATE GROUP (TO_CHAR (INSERT_DATE, 'MM'), 'MM')
ORDER BY TO_DATE (TO_CHAR (INSERT_DATE, 'MM'), 'MM')
But this code returns no value for months without data
I want to return the value '0' for any month of data. How, please?
Note: I use reports 6i.
Maybe this?
SELECT SUM(CNT_REC) CNT_REC, MONTH
FROM
(
SELECT COUNT(I.information_sid) CNT_REC, TO_DATE(TO_CHAR(INSERT_DATE,'MM'),'MM') MONTH
FROM INFORMATIONS I
GROUP BY TO_DATE(TO_CHAR(INSERT_DATE,'MM'),'MM')
UNION ALL
SELECT 0, LPAD(ROWNUM,2,0)
FROM ALL_OBJECTS
WHERE ROWNUM <= 12
)
GROUP BY MONTH
ORDER BY MONTH
No need to SEPARATE during the use of GROUP BY.
-Clément
Tags: Oracle Development
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