Re: [pgAdmin4][Patch]: RM1840 - cannot create gist index due to enforced ASC, DESC options in generated SQL

From: Dave Page <dpage(at)pgadmin(dot)org>
To: Surinder Kumar <surinder(dot)kumar(at)enterprisedb(dot)com>
Cc: pgadmin-hackers <pgadmin-hackers(at)postgresql(dot)org>
Subject: Re: [pgAdmin4][Patch]: RM1840 - cannot create gist index due to enforced ASC, DESC options in generated SQL
Date: 2017-01-17 09:38:47
Message-ID: CA+OCxowjCY1bvuBM3nZ8QpCkG2GxawCThLTjf9mg_VRHGCQaew@mail.gmail.com
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Hi

On Fri, Jan 13, 2017 at 6:50 AM, Surinder Kumar
<surinder(dot)kumar(at)enterprisedb(dot)com> wrote:
> Hi
>
> Please find updated patch following changes:
> 1) Keep field 'opclass' combo box enabled.

That doesn't seem to be working.

> 2) Keep ASC/DESC and NULLs FIRST/LAST options disable for access methods
> other than 'btree'.
> 3) Add validation for name field.

Those bits do though :-)

Please fix 1).

Thanks!

> On Fri, Nov 25, 2016 at 5:16 PM, Dave Page <dpage(at)pgadmin(dot)org> wrote:
>>
>> On Thu, Nov 24, 2016 at 12:13 PM, Surinder Kumar
>> <surinder(dot)kumar(at)enterprisedb(dot)com> wrote:
>> > Hi
>> >
>> > Please find updated patch with change.
>> >
>> > On Fri, Oct 21, 2016 at 9:16 PM, Dave Page <dpage(at)pgadmin(dot)org> wrote:
>> >>
>> >> On Fri, Oct 21, 2016 at 4:42 PM, Surinder Kumar
>> >> <surinder(dot)kumar(at)enterprisedb(dot)com> wrote:
>> >> > On Fri, Oct 21, 2016 at 8:52 PM, Dave Page <dpage(at)pgadmin(dot)org> wrote:
>> >> >>
>> >> >> Hi
>> >> >>
>> >> >> On Fri, Oct 21, 2016 at 4:16 PM, Surinder Kumar
>> >> >> <surinder(dot)kumar(at)enterprisedb(dot)com> wrote:
>> >> >> > Hi
>> >> >> >
>> >> >> > This fix is for exclusion constraint.
>> >> >> > The options like "order" and "nulls" must be conditional. i.e.
>> >> >> > include
>> >> >> > only
>> >> >> > when access method type is other than "gist".
>> >> >>
>> >> >> When creating an index, the asc/desc options are disabled if
>> >> >> gist/gin
>> >> >> used. I think they also should be here.
>> >> >>
>> >> >> Also, what about gin indexes in this case?
>> >> >
>> >> > As per documentation,
>> >> > The access method must support amgettuple (see Chapter 52); at
>> >> > present
>> >> > this
>> >> > means GIN cannot be used
>> >>
>> >> OK, but this patch (unlike the last one) only seems to check for gist.
>> >
>> > I have modified the code so It will check for 'gist' and 'spgist'
>>
>> Hi,
>>
>> This still doesn't seem right to me. For example, if I choose an
>> access method that doesn't have a default operator class for the
>> selected data type, Postgres asks me to explicitly choose one, which I
>> now can't because the combo box is disabled. Conversely, whilst the
>> opclass should probably not be disabled, the ASC/DESC and NULLs
>> FIRST/LAST options probably should be disabled (right now, they're
>> just ignored).
>>
>> Thoughts?
>>
>> --
>> Dave Page
>> Blog: http://pgsnake.blogspot.com
>> Twitter: @pgsnake
>>
>> EnterpriseDB UK: http://www.enterprisedb.com
>> The Enterprise PostgreSQL Company
>
>

--
Dave Page
Blog: http://pgsnake.blogspot.com
Twitter: @pgsnake

EnterpriseDB UK: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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