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Groups > comp.lang.python > #95528

Re: Every character of a string becomes a binding

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On Fri, Aug 21, 2015 at 11:39 AM, Cecil Westerhof <Cecil@decebal.nl> wrote:
> I have the following with sqlite3:
> urls = c.execute('SELECT URL FROM LINKS WHERE URL = ?', url).fetchall()
>
> But this gives:
> Traceback (most recent call last):
>   File "./createDB.py", line 52, in <module>
>     urls = c.execute('SELECT URL FROM LINKS WHERE URL = ?', url).fetchall()
> sqlite3.ProgrammingError: Incorrect number of bindings supplied. The current statement uses 1, and there are 40 supplied.
>
> The number of bindings is the length of the string.
> What is happening here? Why is every character of the string seen as a
> binding, instead of the string being the binding?

Because the execute method expects the bindings to be passed as a
sequence, which means to pass a single binding you need to wrap it in
a sequence: `c.execute('SELECT url FROM links WHERE url = ?', (url,))`

-- 
Zach

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Every character of a string becomes a binding Cecil Westerhof <Cecil@decebal.nl> - 2015-08-21 18:39 +0200
  Re: Every character of a string becomes a binding Zachary Ware <zachary.ware+pylist@gmail.com> - 2015-08-21 11:50 -0500
    Re: Every character of a string becomes a binding Cecil Westerhof <Cecil@decebal.nl> - 2015-08-21 19:04 +0200
      Re: Every character of a string becomes a binding Johannes Bauer <dfnsonfsduifb@gmx.de> - 2015-08-22 11:45 +0200
  Re: Every character of a string becomes a binding John Gordon <gordon@panix.com> - 2015-08-21 17:02 +0000
  Re: Every character of a string becomes a binding Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2015-08-21 20:47 -0400
  Re: Every character of a string becomes a binding Chris Angelico <rosuav@gmail.com> - 2015-08-22 11:03 +1000

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