Re: SQL: Are the "" around table & coloumnames necessary?

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От pauLSiew
Тема Re: SQL: Are the "" around table & coloumnames necessary?
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Msg-id a54pp2$10hc$1@jupiter.hub.org
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Ответ на Re: SQL: Are the "" around table & coloumnames necessary?  (Oliver Elphick <olly@lfix.co.uk>)
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Try not use the SQL keywords as ur table or field name.

"Oliver Elphick" <olly@lfix.co.uk> wrote in message
news:1014327565.3217.862.camel@linda...
> On Mon, 2002-02-18 at 12:43, Mikey wrote:
> > Hello,
> >
> > when I  write a select for example,
> > it doesn't work this way:
> >
> >    select col1, col2
> >       from my_table;
> >
> > instead of that I have to write
> >
> >    select "col1", "col2"
> >       from "my_table";
> >
> > I dont understand this...is there a way to use
> > the more comfortable form without "" ?
>
> The two queries you show are identical.  However, if any of the column
> names contain upper-case characters and were enclosed in double-quotes
> when the table was created, you will get the behaviour you are
> complaining about, because all unquoted identifiers are folded to
> lower-case before the query is executed.
>
> The solution is not to use upper-case characters in identifiers.
> If you already have tables with upper-case names, drop them and recreate
> them (or do pg_dumpall, edit the dump file and reload the database).
>
> --
> Oliver Elphick                                Oliver.Elphick@lfix.co.uk
> Isle of Wight                              http://www.lfix.co.uk/oliver
> GPG: 1024D/3E1D0C1C: CA12 09E0 E8D5 8870 5839  932A 614D 4C34 3E1D 0C1C
>
>      "My sheep hear my voice, and I know them, and they
>       follow me; And I give unto them eternal life; and they
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>       out of my hand."          John 10:27,28
>
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