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Subject: Re: Sqldf - error message
Date: Fri, 20 Nov 2009 15:50:37 +0100
Message-ID: <1276C0564833F043AB4C85ED8DA9CFE502AF0561@ctemail1.nioo.int>
In-Reply-To: <162867790911200637l1c16438apc4bfa3ebef0210d2@mail.gmail.com>
Thread-Topic: [SQL] Sqldf - error message
Thread-Index: Acpp8BA16GSSm/w0SEKQXhjNOVe6xAAAKaew
References: <1276C0564833F043AB4C85ED8DA9CFE502AF054F@ctemail1.nioo.int>
	<162867790911200637l1c16438apc4bfa3ebef0210d2@mail.gmail.com>
From: "Marvelde, Luc te" <L.teMarvelde@nioo.knaw.nl>
To: "Pavel Stehule" <pavel.stehule@gmail.com>
Cc: <pgsql-sql@postgresql.org>

Nothing is wrong with the data... Everything is there in the dataframe. =
All the names are case sensitive, but the way it is spelled is =
correct.... So that cant be the problem

Luc=20

-----Original Message-----
From: Pavel Stehule [mailto:pavel.stehule@gmail.com]=20
Sent: vrijdag 20 november 2009 15:38
To: Marvelde, Luc te
Cc: pgsql-sql@postgresql.org
Subject: Re: [SQL] Sqldf - error message

Hello

2009/11/20 Marvelde, Luc te <L.teMarvelde@nioo.knaw.nl>:
> Hi All!
>
> I just discovered sqldf and im very enthousiastic, as I am a big fan=20
> 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 =
=3D
> dbo_tbl_Broedsels.BroedselID)
> + INNER JOIN dbo_tbl_Nestkasten ON dbo_tbl_BroedselLocatie.NestkastID=20
> + =3D
> dbo_tbl_Nestkasten.NestkastID)
> + INNER JOIN dbo_tbl_Terrein ON dbo_tbl_Nestkasten.TerreinNummer =3D
> dbo_tbl_Terrein.TerreinNummer
> + WHERE (((dbo_tbl_Terrein.RingCentraleNaam)=3D'Oosterhout a/d=20
> + Waal'));")
>
> I get the following message:
>
> Error in sqliteExecStatement(con, statement, bind.data) :
> =A0 RS-DBI driver: (error in statement: no such column:
> dbo_tbl_Broedsels.BroedselID)
>
> ( I also tried removing the 'dbo_tbl_'=A0 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=20
> have special meaning to SQL) or if you try to use SQL92 reserved =
keywords.
> SQLite/RSQLite replaces dots with underscores and changes keywords=20
> words so that they can be used. The keywords in question can be found=20
> 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=20
> error... So, i was wondering if someone knows how to solve it.=20
> preferably i do not want to change all variable names, as these names=20
> 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=20
> commands...
>
> Anyone?
>
> Kind regards,
>
> Luc te Marvelde
> New member :)
>
>
>
>