Re: sum of numeric column

From: Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com>
To: pgsql-general(at)lists(dot)postgresql(dot)org
Subject: Re: sum of numeric column
Date: 2020-12-10 00:48:52
Message-ID: d13cca9a-1db9-2fe8-b33f-b0b1e26e1bd5@aklaver.com
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On 12/9/20 4:46 PM, avi Singh wrote:
> I have a table structure and want to do a sum of column type i.e
> numeric. How can I do it ? when i try sum function i get this error

You don't have a numeric type you have a numeric array type.

>
> ERROR:  function sum(numeric[]) does not exist

Hence the error above.

>
> Can anyone please help me with this ?

What do you want to do with the array?

>
>            Column           |           Type           | Collation |
> Nullable | Default
> ----------------------------+--------------------------+-----------+----------+---------
>  grid_id                    | bigint                   |           |
> not null |
>  as_of_date                 | date                     |           |
> not null |
>  cell_id                    | bigint                   |           |
> not null |
>  last_event_timestamp_local | timestamp with time zone |           |
>        |
>  last_event_id              | bigint                   |           |
>        |
>  column_id                  | bigint                   |           |
>        |
>  column_name                | character varying(50)    |           |
>        |
>  row_id                     | bigint                   |           |
>        |
>  data_type_id               | smallint                 |           |
>        |
>  data_numeric               | numeric[]                |           |
>        |
>  data_string                | character varying[]      |           |
>        |
>
> e.g. of values in numeric type column
>
>  data_numeric
> --------------
>  {2.0}
>  {1.0}
>
> Regards
> Prabhjot

--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com

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