Re: storage engine: how to identify PRIMARY keys?

If I understand your question correctly you need something like this:
table->s->primary_key - pk field number, equals to MAX_KEY if there is
no explicit pk.

On 10/05/16 12:11, Christoph Rupp wrote:
> Hi,
> 
> in the ::create() method of my storage engine I want to create indices
> for all columns where (*field)->m_indexed is true.
> 
> As far as I understand there are different types of indices:
> - PRIMARY: always unique
> - INDEX: usually not unique (can have duplicate keys)
> 
> but I have not been able to figure out whether a FIELD object is a
> primary key or not.
> 
> I saw that the Schema description (TABLE->s) has more information
> about the columns, but it seems they're already sorted by priority
> (i.e. primary key is first), whereas the FIELD objects are not sorted.
> 
> Thanks
> Christoph
> 


-- 
Best regards,
Vlad

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