Many thanks to all.
I should have checked - That table was not supposed to be able to even
get strings in there - this exposed a bug in an application of ours too.
Adding check constraints right away.
Thanks!
On 2015/11/25 1:56 PM, Richard Hipp wrote:
> On 11/25/15, Dave McKee wrote:
>> I
It seems there are some instances where MAX() does not return a value.
I will send such an offending DB direct, but the sqlite3.exe results as
follows:
F:\[BACKUP]>sqlite3.exe IPDB_ImptData.idb
SQLite version 3.9.2 2015-11-02 18:31:45
Enter ".help" for usage hints.
sqlite> SELECT max(UnitCost)
On 25 Nov 2015, at 11:39am, Dave McKee wrote:
> Is this a possible explanation?
You got it. This is part of what I was worried about. MAX processes not just
numbers. It would be useful to know what kind of values Ryan has stored in
that column.
Simon.
I can replicate this behaviour if I insert a zero-length string into the
column.
sqlite> create table foo(a);
sqlite> insert into foo values(5);
sqlite> insert into foo values("");
sqlite> select max(a) from foo;
sqlite> select min(a) from foo;
5
sqlite> select avg(a) from foo;
2.5
Is this a
On 25 Nov 2015, at 11:09am, R Smith wrote:
> sqlite> SELECT max(UnitCost) FROM BOMData;
>
> sqlite> SELECT min(UnitCost) FROM BOMData;
> 0.0
Can you please post the result of
SELECT DISTINCT typeof(UnitCost) FROM BOMData;
(I think that's how you do it. You might need to use GROUP BY.)
On 11/25/15, Dave McKee wrote:
> I can replicate this behaviour if I insert a zero-length string into the
> column.
>
> sqlite> create table foo(a);
> sqlite> insert into foo values(5);
> sqlite> insert into foo values("");
> sqlite> select max(a) from foo;
>
> sqlite> select min(a) from foo;
> 5
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