On 22/12/14 20:14, Jaime Casanova wrote:
> On Thu, Dec 18, 2014 at 7:14 AM, Petr Jelinek <petr@2ndquadrant.com> wrote:
>> Hi,
>>
>> v2 version of this patch is attached.
>>
>
> a few more tests revealed that passing null as the sample size
> argument works, and it shouldn't.
Fixed.
> in repeatable it gives an error if i use null as argument but it gives
> a syntax error, and it should be a data exception (data exception --
> invalid repeat argument in a sample clause) according to the standard
Also fixed.
>
> also you need to add CHECK_FOR_INTERRUPTS somewhere, i tried with a
> big table and had to wait a long time for it to finish
Ah yeah, I can't rely on CHECK_FOR_INTERRUPTS in ExecScan because it
might take a while to fetch a row if percentage is very small and table
is big... Fixed.
Attached is v3 which besides the fixes mentioned above also includes
changes discussed with Tomas (except the CREATE/DROP TABLESAMPLE
METHOD), fixes for crash with FETCH FIRST and is rebased against current
master.
--
Petr Jelinek http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
