[R] RODBC: sqlQuery is successful, but a similar sqlFetch returns error

From: Ben Fairbank <BEN_at_ssanet.com>
Date: Tue 16 Jan 2007 - 17:23:44 GMT


Greetings guRus --  

I have successfully queried a large (24,445 rows by 281 cols.) in-house database using the following RODBC query (without the line breaks)  

testout <- sqlQuery(channel, "select idSchedule,EXCL_Total from dbo.vwC1198_2006_RawData_With_CMPL_EXCL")  

This returns a dataframe of 24445 rows and two columns (as intended), but the following command  

testout <-
sqlFetch(channel,"dbo.vwC1198_2006_RawData_With_CMPL_EXCL",colnames = TRUE,rownames = "idSchedule")  

returns the error message  

in odbcTableExists(channel, sqtable) :

        'dbo.vwC1198_2006_RawData_With_CMPL_EXCL': table not found on channel  

The value of channel did not change between the two commands.  

Based on the help files for sqlFetch and sqlQuery, it is not clear to me why one command would find the table and the other would not. I am running R 2.4.1 on a Windows XP pro machine with 2 gig of memory.  

Thanks for any suggestions or hints,  

Ben Fairbank  

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