Обсуждение: Nested Transactions

i'm trying to accomplish the following task:

begin transaction;
        begin work;
                create table xyz(
                  id int
                );
        commit work;
        select * from xyz;
rollback transaction;
select * from xyz;  // should say database object doesn't exist

however i'm failing to be able to do this?? is there a specific reason?

I know in MSSQL you can say:

begin transaction
    begin transaction test
        create table xyz(
            id [int]
        );
        select * from xyz
    commit transaction test
rollback transaction
select * from xyz // database object doesn't exist

Is there an equivalent?

TIA

I don't believe postgresql supports nested transactions yet.

Wes Sheldahl



cbroussard%liquiddatainc.com@interlock.lexmark.com (Chris) on 03/08/2002
02:12:33 AM

To:   pgsql-general%postgresql.org@interlock.lexmark.com
cc:    (bcc: Wesley Sheldahl/Lex/Lexmark)
Subject:  [GENERAL] Nested Transactions


i'm trying to accomplish the following task:

begin transaction;
        begin work;
                create table xyz(
                  id int
                );
        commit work;
        select * from xyz;
rollback transaction;
select * from xyz;  // should say database object doesn't exist

however i'm failing to be able to do this?? is there a specific reason?

I know in MSSQL you can say:

begin transaction
     begin transaction test
          create table xyz(
               id [int]
          );
          select * from xyz
     commit transaction test
rollback transaction
select * from xyz // database object doesn't exist

Is there an equivalent?

TIA

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cbroussard@liquiddatainc.com (Chris) writes:

> i'm trying to accomplish the following task:
>
> begin transaction;
>         begin work;
>                 create table xyz(
>                   id int
>                 );
>         commit work;
>         select * from xyz;
> rollback transaction;
> select * from xyz;  // should say database object doesn't exist

PostgreSQL currently doesn't have nested transactions.  They have been
discussed for a future version.

-Doug
--
Doug McNaught       Wireboard Industries      http://www.wireboard.com/

      Custom software development, systems and network consulting.
      Java PostgreSQL Enhydra Python Zope Perl Apache Linux BSD...

No, sorry, no nested transactions yet.  It is on the TODO list.

---------------------------------------------------------------------------

Chris wrote:
> i'm trying to accomplish the following task:
>
> begin transaction;
>         begin work;
>                 create table xyz(
>                   id int
>                 );
>         commit work;
>         select * from xyz;
> rollback transaction;
> select * from xyz;  // should say database object doesn't exist
>
> however i'm failing to be able to do this?? is there a specific reason?
>
> I know in MSSQL you can say:
>
> begin transaction
>     begin transaction test
>         create table xyz(
>             id [int]
>         );
>         select * from xyz
>     commit transaction test
> rollback transaction
> select * from xyz // database object doesn't exist
>
> Is there an equivalent?
>
> TIA
>
> ---------------------------(end of broadcast)---------------------------
> TIP 5: Have you checked our extensive FAQ?
>
> http://www.postgresql.org/users-lounge/docs/faq.html
>

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