File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
The moose likes JDBC and Relational Databases and the fly likes SQL to update column Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login
JavaRanch » Java Forums » Databases » JDBC and Relational Databases
Bookmark "SQL to update column" Watch "SQL to update column" New topic

SQL to update column

Raj Ohadi
Ranch Hand

Joined: Jun 30, 2006
Posts: 316
I have a table with following columns:

id(PK), name, score_1, score_2, score_3, rating

First I have the data for all columns EXCEPT rating. Then I want to update "rating" for each row using this rule

if (score_1 + score_2 + score_3) > 90: rating = A
if it > 80 but < 90 : rating =B

How to write this sql ?
Jeanne Boyarsky
author & internet detective

Joined: May 26, 2003
Posts: 33124

You would need update statements. The easiest way to do this is to have one update statement for each letter grade. Try write an update statement for the first one and post here if you get stuck.

[OCA 8 book] [Blog] [JavaRanch FAQ] [How To Ask Questions The Smart Way] [Book Promos]
Other Certs: SCEA Part 1, Part 2 & 3, Core Spring 3, TOGAF part 1 and part 2
I agree. Here's the link:
subject: SQL to update column
It's not a secret anymore!