Re: PATCH: To fix the issue where cast function causes freeze (pgAdmin4)

From: Dave Page <dpage(at)pgadmin(dot)org>
To: Murtuza Zabuawala <murtuza(dot)zabuawala(at)enterprisedb(dot)com>
Cc: pgadmin-hackers <pgadmin-hackers(at)postgresql(dot)org>
Subject: Re: PATCH: To fix the issue where cast function causes freeze (pgAdmin4)
Date: 2016-07-15 11:57:53
Message-ID: CA+OCxowbY7YdszwXhBuH0=kJTnxBxfWrBQoGyby9pFh9qiz+rA@mail.gmail.com
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OK, so the type names are affected by the duplicate column names, and
need to be avoided by using indexes and avoiding dicts. That's issue
#1409.

The second issue is that "SELECT CURRENT_TIMESTAMP" gives us "now
timestamp with time zone (8)". Is the (8) also part of issue #1409, or
some other bug?

The third issue is fixed by this patch, so I'll commit that as there's
a ticket for the other bit already).

On Fri, Jul 15, 2016 at 12:49 PM, Murtuza Zabuawala
<murtuza(dot)zabuawala(at)enterprisedb(dot)com> wrote:
> ++ FYI,
>
> If you provide alias, it'll give you proper result :)
>
> SELECT CURRENT_TIMESTAMP as ts, CAST ( CURRENT_TIMESTAMP AS text ) as
> ts_as_text;
>
>
> --
> Regards,
> Murtuza Zabuawala
> EnterpriseDB: http://www.enterprisedb.com
> The Enterprise PostgreSQL Company
>
> On Fri, Jul 15, 2016 at 5:14 PM, Murtuza Zabuawala
> <murtuza(dot)zabuawala(at)enterprisedb(dot)com> wrote:
>>
>> Hi Dave,
>>
>> Yes, I am aware of that, but the issue you mentioned is due to psycopg2
>> DictCursor issue which I have already mentioned earlier (RM#1409)
>> https://github.com/psycopg/psycopg2/issues/454.
>>
>> The patch is for different issue (RM#1438).
>>
>> --
>> Regards,
>> Murtuza Zabuawala
>> EnterpriseDB: http://www.enterprisedb.com
>> The Enterprise PostgreSQL Company
>>
>> On Fri, Jul 15, 2016 at 4:37 PM, Dave Page <dpage(at)pgadmin(dot)org> wrote:
>>>
>>> On Thu, Jul 14, 2016 at 10:06 AM, Murtuza Zabuawala
>>> <murtuza(dot)zabuawala(at)enterprisedb(dot)com> wrote:
>>> > Hi,
>>> >
>>> > PFA patch to fix the issue where if user use cast function and it
>>> > causes
>>> > freeze in query tool.
>>> > (RM#1438)
>>>
>>> This fixes the hang, but then displays the wrong data type for the
>>> first column - e.g.
>>>
>>> SELECT CURRENT_TIMESTAMP, CAST ( CURRENT_TIMESTAMP AS text ) ;
>>>
>>> will show the columns as "now text(8)" and "now text", when it should
>>> be "now timestamp with time zone", "now text"
>>>
>>> Note that SELECT CURRENT_TIMESTAMP also gets this a little wrong - it
>>> shows "now timestamp with time zone(8)" (the size shouldn't be
>>> included)
>>>
>>>
>>> --
>>> 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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