Re: [basex-talk] simplest possible FLOWR specifying a database
Hi thufir,
The specification might be helpful here [1,2], but essentially it is the
thing being processed, given as a sort of global scope.
HTH!
Best,
Bridger
[1] https://www.w3.org/TR/xquery-31/#id-context-item-expression
[2] https://www.w3.org/TR/xquery-31/#dt-context-item
On Sat, Oct 12, 2019, 4:49 PM thufir wrote:
> that's interesting. what's item in this example, and how can it be
> referenced?
>
>
> thanks,
>
> Thufir
>
> On 2019-10-12 2:29 a.m., Christian Grün wrote:
> > On top of the query (in the query prolog), you can bind your database
> > to the context. After that, there’ll be no need to bind it to a
> > variable:
> >
> > declare context item := db:open("com.w3schools.books");
> > /bookstore
> >
> >
> >
> > On Sat, Oct 12, 2019 at 10:11 AM thufir wrote:
> >>
> >> nevermind, it's:
> >>
> >> let $db := db:open("com.w3schools.books")
> >> return $db/bookstore
> >>
> >> I thought it was unusual because of db:open.
> >>
> >>
> >> -Thufir
> >>
> >> On 2019-10-12 12:50 a.m., thufir wrote:
> >>> these FLWOR .xq files work as is:
> >>>
> >>> let $db := db:open("com.w3schools.books")
> >>> for $x in $db/bookstore
> >>> return $x
> >>>
> >>>
> >>> or
> >>>
> >>> {
> >>> let $db := db:open("com.w3schools.books")
> >>> for $x in $db/bookstore/book
> >>> return {$x/title,$x/author}
> >>> }
> >>>
> >>>
> >>> Probably a silly question, but, rather than, as in the first query,
> >>> using $x can I not somehow specify just "/"?
> >>>
> >>>
> >>>
> >>> thanks,
> >>>
> >>> Thufir
>
Re: [basex-talk] simplest possible FLOWR specifying a database
that's interesting. what's item in this example, and how can it be
referenced?
thanks,
Thufir
On 2019-10-12 2:29 a.m., Christian Grün wrote:
On top of the query (in the query prolog), you can bind your database
to the context. After that, there’ll be no need to bind it to a
variable:
declare context item := db:open("com.w3schools.books");
/bookstore
On Sat, Oct 12, 2019 at 10:11 AM thufir wrote:
nevermind, it's:
let $db := db:open("com.w3schools.books")
return $db/bookstore
I thought it was unusual because of db:open.
-Thufir
On 2019-10-12 12:50 a.m., thufir wrote:
these FLWOR .xq files work as is:
let $db := db:open("com.w3schools.books")
for $x in $db/bookstore
return $x
or
{
let $db := db:open("com.w3schools.books")
for $x in $db/bookstore/book
return {$x/title,$x/author}
}
Probably a silly question, but, rather than, as in the first query,
using $x can I not somehow specify just "/"?
thanks,
Thufir
Re: [basex-talk] simplest possible FLOWR specifying a database
On top of the query (in the query prolog), you can bind your database
to the context. After that, there’ll be no need to bind it to a
variable:
declare context item := db:open("com.w3schools.books");
/bookstore
On Sat, Oct 12, 2019 at 10:11 AM thufir wrote:
>
> nevermind, it's:
>
> let $db := db:open("com.w3schools.books")
> return $db/bookstore
>
> I thought it was unusual because of db:open.
>
>
> -Thufir
>
> On 2019-10-12 12:50 a.m., thufir wrote:
> > these FLWOR .xq files work as is:
> >
> > let $db := db:open("com.w3schools.books")
> > for $x in $db/bookstore
> > return $x
> >
> >
> > or
> >
> > {
> > let $db := db:open("com.w3schools.books")
> > for $x in $db/bookstore/book
> > return {$x/title,$x/author}
> > }
> >
> >
> > Probably a silly question, but, rather than, as in the first query,
> > using $x can I not somehow specify just "/"?
> >
> >
> >
> > thanks,
> >
> > Thufir
Re: [basex-talk] simplest possible FLOWR specifying a database
Am 12.10.2019 um 10:11 schrieb thufir:
nevermind, it's:
let $db := db:open("com.w3schools.books")
return $db/bookstore
I thought it was unusual because of db:open.
You would not even need the "let .. return", if you simply want a short
expression you can also use
db:open("com.w3schools.books")/bookstore
Re: [basex-talk] simplest possible FLOWR specifying a database
nevermind, it's:
let $db := db:open("com.w3schools.books")
return $db/bookstore
I thought it was unusual because of db:open.
-Thufir
On 2019-10-12 12:50 a.m., thufir wrote:
these FLWOR .xq files work as is:
let $db := db:open("com.w3schools.books")
for $x in $db/bookstore
return $x
or
{
let $db := db:open("com.w3schools.books")
for $x in $db/bookstore/book
return {$x/title,$x/author}
}
Probably a silly question, but, rather than, as in the first query,
using $x can I not somehow specify just "/"?
thanks,
Thufir
[basex-talk] simplest possible FLOWR specifying a database
these FLWOR .xq files work as is:
let $db := db:open("com.w3schools.books")
for $x in $db/bookstore
return $x
or
{
let $db := db:open("com.w3schools.books")
for $x in $db/bookstore/book
return {$x/title,$x/author}
}
Probably a silly question, but, rather than, as in the first query,
using $x can I not somehow specify just "/"?
thanks,
Thufir
