On 09/01/2016 05:08 PM, dandl wrote:
>>> In my particular situation the case I care about is when the result
>> of an UPDATE is two identical rows. All I really want is a DISTINCT
>> option.
>>
>> Assuming I am following correctly what you want is that the result of
>> an UPDATE not be two identical rows.
>
> Correct. In practice I don't care whether the action is IGNORE or REPLACE (in Sqlite terms), the outcome is the same.
It is not:
https://www.sqlite.org/lang_conflict.html
>
> Obviously two different records that share the same primary key is a bad thing and worth an error. Two identical
recordsis just boring.
I do not see how the Sqlite mechanism achieves that. It only looks at
UNIQUE, NOT NULL, CHECK, and PRIMARY KEY constraints. It is not looking
at the record in its entirety.
>
> Regards
> David M Bennett FACS
>
> Andl - A New Database Language - andl.org
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--
Adrian Klaver
adrian.klaver@aklaver.com