Re: Dropping a column on parent table doesn't propagate to children?
От | Moshe Jacobson |
---|---|
Тема | Re: Dropping a column on parent table doesn't propagate to children? |
Дата | |
Msg-id | CAJ4CxL=rTXm+oU-i0-9rBP+KTQToqPeLiH0xCdxK0Sp1CJFGQA@mail.gmail.com обсуждение исходный текст |
Ответ на | Re: Dropping a column on parent table doesn't propagate to children? (Sergey Konoplev <sergey.konoplev@postgresql-consulting.com>) |
Список | pgsql-general |
Perfect response, thank you Sergey.
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On Thu, Aug 30, 2012 at 7:29 AM, Sergey Konoplev <sergey.konoplev@postgresql-consulting.com> wrote:
On Wed, Aug 29, 2012 at 5:48 PM, Moshe Jacobson <moshe@neadwerx.com> wrote:You must. Indexes are not inheritable.
> 1. If I want the inherited table's columns indexed the same way as the
> parent, must I create new indexes on the inherited table?They will be.
> 2. If I move the inherited table to a new schema, will its indexes also be
> moved into the new schema?AIU you mean pure inheritance vs inheritance + pure LIKE. In this case
> 3. Any difference in behavior regarding check constraints, schemas, indexes,
> etc that I should be aware of between inherited tables created with pure
> inheritance as opposed to "like <parent_table>"?
I do not see any.As I was told in IRC:
>> > Also, another question about the docs. The syntax for the ALTER TABLE
>> > command starts as follows:
>> >
>> > ALTER TABLE [ ONLY ] name [ * ]
>> >
>> > What is the asterisk? It is not explained anywhere on that page.
RhodiumToad: grayhemp: opposite of ONLY, only present for historical
reasons since it's the default and has been for decades
so nothing important.
>> >
>> > Thanks,
>> > Moshe
>> >
>> > --
>> > Moshe Jacobson
>> > Nead Werx, Inc. | Senior Systems Engineer
>> > 2323 Cumberland Parkway, Suite 201 | Atlanta, GA 30339
>> > moshe@neadwerx.com | www.neadwerx.com
>> >
>>
>> --
>> Sergey Konoplev
>>
>> a database architect, software developer at PostgreSQL-Consulting.com
>> http://www.postgresql-consulting.com
>>
>> Jabber: gray.ru@gmail.com Skype: gray-hemp Phone: +79160686204
>
>
>
>
> --
> Moshe Jacobson
> Nead Werx, Inc. | Senior Systems Engineer
> 2323 Cumberland Parkway, Suite 201 | Atlanta, GA 30339
> moshe@neadwerx.com | www.neadwerx.com
>
--
Sergey Konoplev
a database architect, software developer at PostgreSQL-Consulting.com
http://www.postgresql-consulting.com
Jabber: gray.ru@gmail.com Skype: gray-hemp Phone: +79160686204
Moshe Jacobson
Nead Werx, Inc. | Senior Systems Engineer
Nead Werx, Inc. | Senior Systems Engineer
2323 Cumberland Parkway, Suite 201 | Atlanta, GA 30339
moshe@neadwerx.com | www.neadwerx.com
moshe@neadwerx.com | www.neadwerx.com
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