Date function not returning any rows

Question

I am trying to pull back rows for data of people who were born in the 90s
     a.birthday >= to_date('01/01/90','dd/mm/yy')
     and     
          a.birthday <= to_date('31/12/90','dd/mm/yy')
I know that there is definately users born in the 90s in my database but it returns 0 rows with the above ouptut Date format is like "05-FEB-93", have tried using dd/mon/yy but that gives an error

Answer 1

user8652681 wrote:
I am trying to pull back rows for data of people who were born in the 90s
     a.birthday >= to_date('01/01/90','dd/mm/yy')
     and     
          a.birthday <= to_date('31/12/90','dd/mm/yy')
I know that there is definately users born in the 90s in my database but it returns 0 rows with the above ouptut Date format is like "05-FEB-93", have tried using dd/mon/yy but that gives an errorFirst off to_date('01/01/90','dd/mm/yy') is Jan 1, 2090. You need to use a four digit year.
Secondly a.birthday >= to_date('01/01/1990','dd/mm/yyyy') and a.birthday <= to_date('31/12/1990','dd/mm/yyyy')
is not everyone born in the 90's, it's everyone born in 1990. If you want everyone born in the 90's you need:
a.birthday between to_date('01/01/1990','dd/mm/yyyy') and to_date('31/12/1999 23:59:59','dd/mm/yyyy hh24:mi:ss')I realize your birthdays are most likely trunc'ed so the time portion probably isn't necessary but I included it just to be safe.
Edited by: kendenny on Jul 22, 2009 6:13 AM