Interbase data type: DATE

[not24]

I'm new with InterBase database. I'm try to write ASP to get data from InterBase 5.x.

When I used this command in ASP, IBAdmin, IBAccess and IBView, it wouldn't show data but I know for fact that that data is in the database:

SELECT *
FROM PATIENT INNER JOIN VISIT ON PATIENT.PATIENTID=VISIT.PATIENTID
WHERE VISIT.LASTMODIFIED = '4/10/2002'

I read in the book, it sound like correct but I do not know why the data not show up.

Please help,

CM

 

[MartijnTonies]

What about "10/4/2002" - this is IB5, right? Do understand that the DATE field holds a time piece as well. Filter that off with an UDF.
Martijn Tonies
InterBase Workbench - the developer tool for InterBase and Firebird

http://www.interbaseworkbench.com

 

[not24]

It's suppose to be April 10, 2002. Will IB5 date format be difference? That field is TIMESTAMP type.

I actually want to use that query on ASP. I don't know much about Interbase. What's UDF anyway? Can I use it on ASP?

Please advice

 

[MartijnTonies]

An UDF is a User Defined Function. You can write a DLL in your favourite language and make it available to InterBase. Then, you can do things like:

select F_StripTime(MyDateColumn)
from mytable

etc - you might want to check out

http://www.ibphoenix.com

for more information and some links to a couple of free-ware UDF libraries.

Martijn Tonies
InterBase Workbench - the developer tool for InterBase and Firebird

http://www.interbaseworkbench.com

 

[not24]

I finally used command:
WHERE VISIT.LASTMODIFIED >= '4/10/2002' AND VISIT.LASTMODIFIED < '4/11/2002'

Then it's work. But thank you anyway.