[R] Query an Access database based on a date attribute (Tudor Bodea)

[Prof Brian Ripley]

On Tue, 13 Nov 2007, Baize, Harold wrote:

> Tudor Bodea asked:
>
>> In this context, I try to get all the records for which market is atl-bos,
>> competitor is delta and dd is 2007-11-20 (first record above). To do this I used
>
>>> # channel <- odbcConnectAccess("test.mdb")
>>> res <- sqlQuery(channel, "select * from test_table where market = 'atl-bos'
>>> and competitor = 'delta' and dd = 2007-11-20")
>
>> Does any of you know what it is going on?
>
> Try this:
>
> res <- sqlQuery(channel, "select * from test_table
>   where market = 'atl-bos'and competitor = 'delta' and dd = {d '2007-11-20'}")
>
> Microsoft variant of SQL has an odd date syntax. I tried a dozen things before
> I found what worked.

You could have asked RODBC: sqlTypeInfo() tells you what quote pairs to 
use with each type for the current DBMS.

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
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