On 2 Aug 2011, at 9:06am, Igor Sereda wrote:
> Thanks, Simon - it's a bug then. Hope it will get pulled into the bug
> tracker.
> Simon Slavin-3 wrote:
>
>> The spec for '<=' should say that comparing any number with NULL always
>> gives a NULL result. If SQLite is doing anything apart from th
Thanks, Simon - it's a bug then. Hope it will get pulled into the bug
tracker.
Igor
Simon Slavin-3 wrote:
>
>
> On 2 Aug 2011, at 1:10am, Igor Sereda wrote:
>
>> To my humble knowledge, operations with NULL have well-defined semantics,
>> both in SQL-you-name-it standards and in SQLite. "A
On 2 Aug 2011, at 1:10am, Igor Sereda wrote:
> To my humble knowledge, operations with NULL have well-defined semantics,
> both in SQL-you-name-it standards and in SQLite. "A < B" may have three
> results - TRUE, FALSE and NULL. It doesn't matter whether you can make any
> sense of it - it's the
Simon, Michael -
To my humble knowledge, operations with NULL have well-defined semantics,
both in SQL-you-name-it standards and in SQLite. "A < B" may have three
results - TRUE, FALSE and NULL. It doesn't matter whether you can make any
sense of it - it's the spec ;)
Therefore I'm trying to rep
On 1 Aug 2011, at 10:45pm, Black, Michael (IS) wrote:
> If it's meaningless then shouldn't it be a syntax error?
It's about as meaningless as
X <= maxreal
so it would take quite a lot of processing time to identify it as meaningless.
Not sure as if it's worth the processing time. Any decent
avin [slav...@bigfraud.org]
Sent: Monday, August 01, 2011 4:43 PM
To: General Discussion of SQLite Database
Subject: EXT :Re: [sqlite] Virtual Table xBestIndex and NULL Search Conditions
(Bug?)
On 1 Aug 2011, at 9:47pm, Igor Sereda wrote:
> So - who else thinks it's a bug?
The SQL standard
On 1 Aug 2011, at 9:47pm, Igor Sereda wrote:
> So - who else thinks it's a bug?
The SQL standard says 'NULL' means 'I don't know' or 'value missing' or
something of the kind. So using a comparison like
X > NULL
doesn't mean anything, since there can't be a well-ordering principle for a
miss
Thanks Jay,
That's a good hint about the origin of the problem.
However, you refer to the sort order, but the problem is with WHERE
statement. Since numeric comparison with NULL always evaluates to NULL (see
section 4.0 of the link you gave me), a statement like "SELECT * FROM table
WHERE valu
On Mon, Aug 01, 2011 at 12:34:33PM -0700, Igor Sereda scratched on the wall:
>
> Hello,
>
> I'm seeing strange input given into xBestIndex method of my virtual table.
>
> I'm maintaining sqlite4java wrapper and I'm trying to upgrade it from SQLite
> 3.7.4 to 3.7.7.1. A couple of failed tests unc
Hello,
I'm seeing strange input given into xBestIndex method of my virtual table.
I'm maintaining sqlite4java wrapper and I'm trying to upgrade it from SQLite
3.7.4 to 3.7.7.1. A couple of failed tests uncovered that there's a problem
when searching a simple virtual table with constraints that c
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