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From Shreyas Kaushik <Shreyas.Kaus...@Sun.COM>
Subject Re: [jira] Commented: (DERBY-20) LIKE handles strings with control characters incorrectly.
Date Mon, 14 Mar 2005 09:52:13 GMT
Updates ?

~ Shreyas

Shreyas Kaushik wrote:

> Any updates here?
>
> ~ Shreyas
>
> Shreyas Kaushik (JIRA) wrote:
>
>>     [ 
>> http://issues.apache.org/jira/browse/DERBY-20?page=comments#action_58547 
>> ]
>>     Shreyas Kaushik commented on DERBY-20:
>> --------------------------------------
>>
>> A more clear comment here would be useful.
>>
>> Clear meaning, what is the use case that you are talking about here? 
>> A small example of the behaviour with expcted output vs. current 
>> output would help.
>>
>>  
>>
>>> LIKE handles strings with control characters incorrectly.
>>> ---------------------------------------------------------
>>>
>>>         Key: DERBY-20
>>>         URL: http://issues.apache.org/jira/browse/DERBY-20
>>>     Project: Derby
>>>        Type: Bug
>>>  Components: SQL
>>>    Versions: 10.0.2.0
>>>    Reporter: Tulika Agrawal
>>>    Priority: Minor
>>>   
>>
>>
>>  
>>
>>> Reporting for Daniel John Debrunner.
>>> If a string contains control characters in the regions matched by 
>>> wild card characters then in some situations a LIKE will return 
>>> false instead of true and the row will not be returned.
>>> Caused by the dynamic like optimization using >= with a prefix which 
>>> is is equivalent to >= on the prefeix appended with blanks and not 
>>> null (\u0000) characters.
>>>   
>>
>>
>>  
>>

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