问题
One of my column needs to be transformed into a date field. It contains a value that gives the YYMM and it should be translated into the last day of that month: For example, 1312 should become 12/31/2013.
I have tried various last_day, to_char functions but not able to convert 1312 in a date format. Please help !!
回答1:
Netezza is based on Postgres, so maybe the Postgres method will work. Here is Postgres code that works (see here):
select to_date('1312'||'01', 'YYMMDD') + interval '1 month' - interval '1 day'
回答2:
I would first convert the number to a date, then add 1 month and subtract 1 day.
select add_months(to_date(1312, 'yymm'), 1) - 1 as the_date
来源：https://stackoverflow.com/questions/22566950/how-do-i-convert-mmyy-to-last-day-of-month-in-netezza