sql - Getting last day of week from week number & year in Aginity workbench -


i working in netezza sql.

i have got week number , year in dataset combined entry. example, "week 3, 2017". want use field date last day of week. in case, should "21-jan-2017".

any thoughts on how can it?

thanks.

here's example should work you:

select  date(year_num || '-01-01') + cast(((week_num * 7) - 1) || ' days' interval)    (select  cast(translate(substr(dt, 0, instr(dt, ', ')), 'week ', '') byteint) week_num,                  cast(substr(dt, instr(dt, ', ') + 2) smallint) year_num             (select  'week 3, 2017' dt                    union                    select  'week 19, 2015' dt                    union                    select  'week 45, 2016' dt) _) _

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