Re: For each statement trigger and update table

From: Rene Romero Benavides <rene(dot)romero(dot)b(at)gmail(dot)com>
To: Mike Martin <mike(at)redtux(dot)plus(dot)com>
Cc: pgsql-sql(at)lists(dot)postgresql(dot)org
Subject: Re: For each statement trigger and update table
Date: 2020-01-04 00:26:34
Message-ID: CANaGW08w6yEZk-BiEmfG7O6dvV3gt_hmrwnB56oxyy7a0agSyg@mail.gmail.com
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Mike, please include to the mailing list as well, so others can help you
out too. Why do you need the trigger to be FOR EACH STATEMENT? so I can
understand your use case, even if it's simple stuff, please share with us
your code.

On Fri, Jan 3, 2020 at 6:06 PM Rene Romero Benavides <
rene(dot)romero(dot)b(at)gmail(dot)com> wrote:

> Oh, so you're defining transition relations (REFERENCING NEW TABLE, OLD
> TABLE ) as in here?
>
> CREATE TRIGGER paired_items_update
> AFTER UPDATE ON paired_items
> REFERENCING NEW TABLE AS newtab OLD TABLE AS oldtab
> FOR EACH ROW
> EXECUTE FUNCTION check_matching_pairs();
>
>
> On Fri, Jan 3, 2020 at 5:55 PM Mike Martin <mike(at)redtux(dot)plus(dot)com> wrote:
>
>> According to the docs, not possible to use a transition table and column
>> list together
>>
>> On Fri, 3 Jan 2020, 23:39 Rene Romero Benavides, <rene(dot)romero(dot)b(at)gmail(dot)com>
>> wrote:
>>
>>> > I can give code when I get home, but it's pretty simple stuff
>>> please do so, along with your trigger definition. Are you aware that you
>>> can define your update trigger to fire on a specific column?
>>>
>>> https://www.postgresql.org/docs/current/sql-createtrigger.html
>>>
>>> For UPDATE events, it is possible to specify a list of columns using
>>> this syntax:
>>>
>>> UPDATE OF column_name1 [, column_name2 ... ]
>>>
>>>
>>>
>>> On Fri, Jan 3, 2020 at 5:21 PM Mike Martin <mike(at)redtux(dot)plus(dot)com> wrote:
>>>
>>>> Not sure if this is possible
>>>> Basically I want to have a trigger which updates an array column in the
>>>> same table when a column is updated
>>>> This works as a row level trigger, but not as per statement
>>>> I have hit the recursive issue (where update fires update trigger which
>>>> fires etc)
>>>> According to the docs I cannot use columns and relative tables together
>>>>
>>>> So any suggestions? I can give code when I get home, but it's pretty
>>>> simple stuff
>>>>
>>>
>>>
>>> --
>>> El genio es 1% inspiración y 99% transpiración.
>>> Thomas Alva Edison
>>> http://pglearn.blogspot.mx/
>>>
>>>
>
> --
> El genio es 1% inspiración y 99% transpiración.
> Thomas Alva Edison
> http://pglearn.blogspot.mx/
>
>

--
El genio es 1% inspiración y 99% transpiración.
Thomas Alva Edison
http://pglearn.blogspot.mx/

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