[CWB] reserved words in CWB

[Ruprecht von Waldenfels]

Thanks, Stefan! I expected so.
Best! Ruprecht

Am 11.09.2015 um 06:07 schrieb Stefan Evert:
>> On 10 Sep 2015, at 20:26, Ruprecht von Waldenfels <ruprecht.waldenfels at gmx.net> wrote:
>>
>> in my setup, I unfortunately use the word "by" as the name of an attribute (similar to "word", "lemma", etc.). Unfortunately, if I make a query
>> [lemma="xwz" & by contains "ysd"]
>> I get an error message, because by is a reserved word.
>>
>> The use of "by" (it stands for "Belarusian")  follows automatically from the architecture of my corpus, and I would have to change it in a lot of places. Is there any way I can continue using it by escaping it somehow?
> Unfortunately, there's no workaround.  Like in most programming languages, identifiers (such as attribute names) cannot be identical to reserved words.
>
> The solution, of course, is to rename your attributes.  If you automatically generate attribute names, use a special prefix or suffix to make sure there are no collisions (hint: reserved words never contain underscores).
>
> Have other people had similar issues?  If there's popular demand, we might be able to implement "escapes" for attribute names in the final 3.5 release.  We'd probably use R-style notation with backticks, i.e. in your example
>
> 	[lemma="xwz" & `by` contains "ysd"]
>
> (The ` operator is defined in the CQP grammar, but currently unused.)
>
> Best,
> Stefan
>
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