Hmm. Jean and I did agree it would be better not to have tags beginning
with numbers quite some time ago, which was why AQL doesn't allow them.
I guess we didn't outlaw them for practical backward compatibility
reasons. But consider them deprecated - better to use standard
progamming language type identifiers, except that ones prefixed with an
underscore are reserved to the system (is that documented anywhere?).
Richard
Keith Bradnam wrote:
> On 13 Aug 2003, Dave Matthews wrote:
>>>>It's legal for tag names to begin with a number, right? It works fine
>>in all other respects but in AQL it gives a syntax error.
>>>>E.g. at WormBase, http://www.wormbase.org/db/searches/aql_query,>>"select U from U in class UTR where exists_tag U->5_UTR" gives
>>"AQL error 700 around: '_tag U->5_UTR"
>>>> Hi Dave,
>> It's legal as far as I know, and we have often used numbers as part of
> tag names in WormBase (as your example shows with the '5_UTR' tag).
>> Never been aware of any querying problems though, but then I hardly ever
> use AQL. If it is a number-related problem, you could maybe check by
> writing an AQL query against the '2_point' tag in the ?Rearrangement
> class. If you still get a bug, then this should be enough info for the
> acedb guys to track it down (note though that Ed is on holiday at the
> moment).
>> Regards,
>> Keith
>> ~ Keith Bradnam - WormBase group: http://www.wormbase.org/> ~
> ~ The Wellcome Trust Sanger Institute,
> ~ Hinxton, Cambridge, CB10 1SA, UK. Tel: 01223 494922
>>
