RE: Need help on SQLRPGLE

Hi,

 

if you want to compare a numeric date with a real date in SQL, you first
have to convert the numeric date into a valid character representation for a
date and use the scalar function DATE() to convert this string
representation into a real date. Valid character representations of a date
are 'YYYY-MM-DD', 'MM/DD/YYYY' and 'DD.MM.YYYY'. The additional use of the
scalar function DATE() is only necessary if you want to calculate with this
date otherwise SQL is smart enough to know this string represents a date.

 

If you use the scalar function date with a numeric value, the numeric value
must represent the calculated number of days since '0001-01-01'.

 

You also can do the inverse, convert the real date into a character
representation of a date with the scalar function CHAR. After built a string
that only contains the digits of this character string and convert this
string into a numeric value. In your case converting the current date into a
numeric date will result in a better performance, because an access path
built over the numeric date field can be used.

 

Example:

Select * From MyTable

   Where MyNumDate = Cast(Replace(Char(Current_Date, ISO), '-', '') as
Dec(8, 0));

 

Birgitta