On Fri, Feb 5, 2021 at 9:49 AM Eduardo Kortright <[email protected]>
wrote:

>
> Hello,
>
> I am using Sequel 5.41.0 to connect to a SQL Server database using the
> tiny_tds gem and the tinytds adapter.
>
> I just noticed that when retrieving certain large columns the returned
> value is getting truncated to 2,048 characters.
>
> In SQL Server, the columns are defined as nvarchar(max), which could hold
> over 2 billion characters, but in my case I have values ranging from
> several thousand to almost 4 million characters.
>
> When I execute DB.schema(:mytable), I see a property "max_chars" for the
> nvarchar(max) column that has the value -1.  Other columns defined as
> nvarchar(4000), for example, show max_chars = 4000, and the returned value
> can be as large as 4000 characters.
>
> Can you tell me how to handle the nvarchar(max) columns?
>

Try using the :textsize option when connecting, as described in:
http://sequel.jeremyevans.net/rdoc/files/doc/opening_databases_rdoc.html#label-tinytds
.  If that doesn't work, please post a minimal self contained example
showing the problem and I'll test with it.

The :max_chars schema entry being -1 is expected.  The :max_length schema
entry is the one Sequel uses to actually specify behavior such as setting
validations, and it not set for cases where :max_chars < 0.

Thanks,
Jeremy

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