Re: Sqldf - error message

Hello

2009/11/20 Marvelde, Luc te <L(dot)teMarvelde(at)nioo(dot)knaw(dot)nl>:
> Hi All!
>
> I just discovered sqldf and im very enthousiastic, as I am a big fan of R
> and I often get frustrated using Access for datamanagement.
>
> I tried running some queries from Access in R, and it works very well.
> However, I have problems with some queries.
>
> If I run this SQL query:
>
>> sqldf("SELECT
> + dbo_tbl_Terrein.RingCentraleNaam,
> + dbo_tbl_Broedsels.BroedselID
> + FROM ((dbo_tbl_BroedselLocatie
> + INNER JOIN dbo_tbl_Broedsels ON dbo_tbl_BroedselLocatie.BroedselID =
> dbo_tbl_Broedsels.BroedselID)
> + INNER JOIN dbo_tbl_Nestkasten ON dbo_tbl_BroedselLocatie.NestkastID =
> dbo_tbl_Nestkasten.NestkastID)
> + INNER JOIN dbo_tbl_Terrein ON dbo_tbl_Nestkasten.TerreinNummer =
> dbo_tbl_Terrein.TerreinNummer
> + WHERE (((dbo_tbl_Terrein.RingCentraleNaam)='Oosterhout a/d Waal'));")
>
> I get the following message:
>
> Error in sqliteExecStatement(con, statement, bind.data) :
>   RS-DBI driver: (error in statement: no such column:
> dbo_tbl_Broedsels.BroedselID)
>
> ( I also tried removing the 'dbo_tbl_'  part of the dataframe names, but
> still the same problem occurred)

I thing, you have a problem with data. Probably some creating script
was broken or some similar. The message is clean. Your database has
not column BroedselID. Recheck your query, please. Im not sure - maybe
SQLite identifiers are case sensitive. Maybe are defined as case
sensitive.

Regards
Pavel Stehule

>
> Now ofcoarse I looked on google, because I was sure someone would have had
> the same problem.. And yes, I found this website...
>
> http://code.google.com/p/sqldf/
>
> They say:
> This happens when you try to use variable with a dot in it (as dots have
> special meaning to SQL) or if you try to use SQL92 reserved keywords.
> SQLite/RSQLite replaces dots with underscores and changes keywords words so
> that they can be used. The keywords in question can be found by entering the
> following at the R command line:
>
> .SQL92Keywords
>
> In this list of keywords, i cannot find any word that is close to the error…
> So, i was wondering if someone knows how to solve it. preferably i do not
> want to change all variable names, as these names come from the 'big main
> database' of the institute.
>
> The site also says that SQLite/RSQLite can fix the problem… but then when i
> look in their help, i cannot see how i can easily use those commands…
>
> Anyone?
>
> Kind regards,
>
> Luc te Marvelde
> New member :)
>
>
>
>