I have a table with integer columns and I wanted to calculate to some simple 
statistics. To make the calculations more portable, I chose to use SQL rather 
than the XBase calculate command. This is an example of what I tried:

SELECT AVG(myintcolumn) FROM myTable INTO ARRAY myArray

Result 0. I knew that the average would be small but it should not have been 
zero. I tried the equivalent calculation using CALCULATE AVG() and got the 
correct answer (0.7). I then changed the SQL to:

SELECT CAST(AVG(myintcolumn) As B(1)) FROM myTable INTO ARRAY myArray


Bingo! Result 0.7. The mistake I made was in thinking that SQL and XBase 
calculations are identical - they're not. SQL preserves the underlying data 
type and CALCULATE returns a numeric.

Moral: NEVER ASSUME ANYTHING.

Laurie

--- StripMime Report -- processed MIME parts ---
multipart/alternative
  text/plain (text body -- kept)
  text/html
---

_______________________________________________
Post Messages to: [email protected]
Subscription Maintenance: http://mail.leafe.com/mailman/listinfo/profox
OT-free version of this list: http://mail.leafe.com/mailman/listinfo/profoxtech
Searchable Archive: http://leafe.com/archives/search/profox
This message: 
http://leafe.com/archives/byMID/profox/[email protected]
** All postings, unless explicitly stated otherwise, are the opinions of the 
author, and do not constitute legal or medical advice. This statement is added 
to the messages for those lawyers who are too stupid to see the obvious.

Reply via email to