[R] quoting a table name due to a special character in sqlQuery (RODBC)

[Stefan Uhmann]

It works, great!

Thank you, Phil.
/Stefan

Phil Spector schrieb, Am 15.09.2009 18:28:
> Stefan -
>     Have you tried surrounding the problem names with 
> backticks (`) instead of quotes (' or ")?
> 
>  					- Phil Spector
>  					 Statistical Computing Facility
>  					 Department of Statistics
>  					 UC Berkeley
>  					 spector at stat.berkeley.edu
> 
> 
> On Tue, 15 Sep 2009, Stefan Uhmann wrote:
> 
>> Dear List,
>>
>> I have a problem with RODBC on a Paradox-DB, sqlQuery, and special characters 
>> in table names. Unfortunately, some of the latter include the underscore <_>. 
>> And I am not able to change them.
>>
>> That's not a problem, when I quote the table name:
>>> sqlQuery(channel2, 'SELECT * FROM "anmeldung-alt"')
>> Btw, if I swap ' and " it does not work:
>>> sqlQuery(channel2, "SELECT * FROM 'anmeldung-alt'")
>> [1] "HY000 -3003 [Microsoft][ODBC Paradox Driver] Syntaxfehler in Abfrage. 
>> Die Abfrage ist unvollständig."
>> [2] "[RODBC] ERROR: Could not SQLExecDirect 'SELECT * FROM 'anmeldung-alt''"
>>
>> It gets nasty, when I try to build a function and to substitute the 'SELECT * 
>> FROM "anmeldung-alt"' with a paste():
>>> tabelle
>> [1] "anmeldung-alt"
>>> paste('select * from ', '"', tabelle, '"', sep="")
>> [1] "select * from \"anmeldung-alt\""
>>> gsub('\"', '"', paste('select * from ', '"', tabelle, '"', sep=""))
>> [1] "select * from \"anmeldung-alt\""
>>
>> Can anybody point me into the right direction, please?
>>
>> Thanks in advance,
>> Stefan
>>
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