01.07.2015 13:34, Jiří Činčura wrote:
>>     If new datatype is the same from index POV, there is no need to rebuild
>> index.
>
> Not sure what you mean by same? Let's say I change it from smallint to int.

   All kind of numbers have the same representation in index keys. So, in the
case above there is no need to rebuild index.

>> Else, IIRC, engine rebuild all indices dependent on domain-based fields.
>> You can check it yourself, btw :)
>
> How?

   Look at execution statistics. If commit took more time than expected (few 
ms),
performs a lot of fetches\marks, etc - it could be sign that index(es) was 
rebuild.

Regards,
Vlad


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