sql - Where date difference between now and max date value is greater than X -


i want return result set (from postgres database) containing clients last payment date more x number of days ago.

this have list of clients , last payment date:

  select usermaster.userid, date_trunc('days', now()-max(paymentdate)) last_payment   usermaster, paymentdetail    usermaster.userid=paymentdetail.userid   group usermaster.userid;

i limit condition: ... , last_payment > 100 days

this should trick

edit -

select *  (select usermaster.userid, date_trunc('days', now()-max(paymentdate))           last_payment usermaster, paymentdetail  usermaster.userid=paymentdetail.userid group usermaster.userid ) temptab last_payment>100;

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