Re: Encountered an error

Поиск
Список
Период
Сортировка
От Shaan Repswal
Тема Re: Encountered an error
Дата
Msg-id CALa+hESn+oDzp8mgayJQOAV1RJMkhESjerP6AkYK-_hR5Chi8A@mail.gmail.com
обсуждение исходный текст
Ответ на Re: Encountered an error  (Karsten Hilbert <Karsten.Hilbert@gmx.net>)
Ответы Re: Encountered an error  (Shaan Repswal <shaun.reapswaal@gmail.com>)
Список psycopg
Hey guys I built the string in python and then passed it to the cur.execute() function. This was so simple! It scares me to see that I didn't get it the first time around. But anyway, thanks for laying to rest my confusions. Thank you so much!

On Fri, Mar 11, 2016 at 3:33 AM, Karsten Hilbert <Karsten.Hilbert@gmx.net> wrote:
On Fri, Mar 11, 2016 at 01:16:33AM +0530, Shaan Repswal wrote:

> I am new to databases and am a novice to programming in general.

Don't worry.

> @Karsten - I know, I got the feeling that the design felt awry as well. The
> database will be on the local machine. And the client side will have the
> code to error check the column names being added and also if there already
> is a column by this name or not.

You can add a second table (pseudo code)

        inventory_detail
                pk serial primary key
                fk_inventory integer foreign key (inventory.pk)
                detail_name text
                detail_value text

and then - instead of creating columns in table inventory -
add rows to the inventory_detail table where .detail_name
would hold what otherwise would be the column name of the new
column in inventory and .detail_value the value you would
have put into the new column in table inventory. The
fk_inventory column would hold the primary key of the row in
the inventory table this inventory_detail row belongs to.

Just a suggestion.

Karsten
--
GPG key ID E4071346 @ eu.pool.sks-keyservers.net
E167 67FD A291 2BEA 73BD  4537 78B9 A9F9 E407 1346


--
Sent via psycopg mailing list (psycopg@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/psycopg

В списке psycopg по дате отправления:

Предыдущее
От: Adrian Klaver
Дата:
Сообщение: Re: unable to connect to postgres db via psycopy
Следующее
От: Shaan Repswal
Дата:
Сообщение: Re: Encountered an error