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https://issues.apache.org/jira/browse/DERBY-3664?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12649085#action_12649085
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Shawn Aucoin commented on DERBY-3664:
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I think it was decided that it would be a configurable option. I agree that it
conforms to the spec.
Shawn Aucoin
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> Trailing white space in varchar field is trimmed off.
> -----------------------------------------------------
>
> Key: DERBY-3664
> URL: https://issues.apache.org/jira/browse/DERBY-3664
> Project: Derby
> Issue Type: New Feature
> Components: SQL
> Affects Versions: 10.3.1.4, 10.3.2.1, 10.4.1.3
> Environment: Win XP, Derby 10.4.1.3
> Reporter: Shawn Aucoin
>
> When executing an insert statement with a varchar field containing trailing
> whitespace, the trailing whitespace is removed. This results in unique
> constraint issues. If index is not unique, select * from login where login
> = 'first_test' will return both records. Preceeding whitespace doesn't
> appear to be affected. I tested this from IJ and from java api. I included
> an example below
> CREATE TABLE LOGIN
> (
> LOGIN_ID INT PRIMARY KEY,
> LOGIN VARCHAR(60)
> );
> CREATE UNIQUE INDEX LOGIN_LOGIN_IDX
> ON LOGIN (LOGIN DESC);
> insert into login (LOGIN_ID, LOGIN) values (1, 'first_test');
> insert into login (LOGIN_ID, LOGIN) values (2, 'first_test ');
> Now, i fully admit that there is no logical reason for trailing whitespace,
> but it is client data that i am dealing with and I may not be able to get it
> changed. Thanks, derby is a sweet product!
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