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From "Kim Haase (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-2603) Minor erratum in page of VARCHAR in Derby Reference manual
Date Thu, 03 May 2007 21:30:15 GMT

    [ https://issues.apache.org/jira/browse/DERBY-2603?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12493530
] 

Kim Haase commented on DERBY-2603:
----------------------------------

There are references to these operators as binary on the following pages:

http://db.apache.org/derby/docs/dev/ref/rrefsqlj13733.html (CHAR data type): same sentence
as in http://db.apache.org/derby/docs/dev/ref/rrefsqlj41207.html (VARCHAR data type)

http://db.apache.org/derby/docs/dev/ref/rrefsqlj1083019.html (Where dynamic parameters are
allowed): 

"5. For the binary operators +, -, *, /, AND, OR, <, >, =, <>, <=, and >=,
use of a dynamic parameter as one operand but not both is permitted. Its type is taken from
the other side."

So the use of "binary" to mean "having two operands" is intentional.

But perhaps the word "binary" can simply be removed from rrefsqlj13733 and rrefsqlj41207 --
don't all comparison operators have two operands? If so, "binary" is not necessary to the
meaning here.

> Minor erratum in page of VARCHAR in Derby Reference manual
> ----------------------------------------------------------
>
>                 Key: DERBY-2603
>                 URL: https://issues.apache.org/jira/browse/DERBY-2603
>             Project: Derby
>          Issue Type: Bug
>          Components: Documentation
>         Environment: http://db.apache.org/derby/docs/dev/ref/rrefsqlj41207.html
>            Reporter: Tomohito Nakayama
>            Priority: Minor
>
> I found next statement in the page through translation into Japanese.
> > When binary comparison operators are applied to VARCHARs, the lengths of the operands
are not altered, and spaces at the end of the values are ignored.
> I think "binary" should be replaced as "boolean".
>  

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