>>>I'm having trouble retrieving data from an Oracle Rdb database where a date calculation is involved (eg dDischargeDate - dDob <= 18 years).
>>>
>>>I have very little documentation about Rdb. Please note that Rdb is a step-child of Oracle so make no Oracle assumptions!
>>>
>>>Is it possible to subtract 2 dates in ANSI SQL92 and get a number of days, months, or years? What is the syntax?
>>
>>When I have a date parameter for an ORacle retrieval, I have to convert the date to with dtoc() function first:
>>
>>local cDate
>>cDate = dtoc(somedate)
>>
>>My remote view SQL looks like:
>>
>>...where Ora_DateField = ?cDate and ...
>>
>>My SQL Passthru construction would be:
>>
>>"... where Ora_DateField = '" + cDate + "' and ..."
>
>Good advice, but I need the ANSI SQL92 SPT syntax for date subtraction:
>
>"WHERE <= 18" && Kid is under 18 years old
>
>- or -
>
>"WHERE >
>I need to do subtraction since I'm looking for kids with the dx in the past 3 years so I need to calculate Dob vs discharge date.

dDate = gomonth(date(), -216) && subtract 216 months from today

... where Ora_DateField >= dDate

Mark McCasland
Midlothian, TX USA