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Check if given date is past date of a given month

3751736Jul 28 2018 — edited Aug 2 2018


I have date coming in as character datatype. I have requirement that

need to check if given date is past date of a given month then set the date as the last day in the month.

I know how to set for the last date of the month by using last_day function. But I want to know how can I check if the give date value falls in the specific month or out and I think I need to check with year value too for leap year on February last day.

SELECT  CASE WHEN to_char(trunc (LAST_DAY(SYSDATE))) <  '20180841' THEN LAST_DAY(sysdate) else01’ end from dual;

I used above SQL and I am getting this issue

ORA-00932: inconsistent datatypes: expected DATE got CHAR

I know the issue but want to make sure with the team.

Thank you for your Time and advice.

This post has been answered by Paulzip on Jul 29 2018
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Locked due to inactivity on Aug 30 2018
Added on Jul 28 2018