Re: SQL Transaction related

From: "Uwe C(dot) Schroeder" <uwe(at)oss4u(dot)com>
To: pgsql-general(at)postgresql(dot)org
Cc: "Harpreet Dhaliwal" <harpreet(dot)dhaliwal01(at)gmail(dot)com>
Subject: Re: SQL Transaction related
Date: 2007-05-10 06:49:02
Message-ID: 200705092349.02345.uwe@oss4u.com
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Yes it will. Everything INSIDE ONE transaction is visible to that exact
transaction. So in your scenario the val1 from the select will see what was
inserted - just any other transaction won't unless the current one is
committed.

Uwe

On Wednesday 09 May 2007, Harpreet Dhaliwal wrote:
> Hi,
>
> I have a transaction like following:
>
> BEGIN
>
> INSERT INTO tbl_xyz VALUES (val1, val2);
>
> SELECT INTO wid MAX(val1) FROM tbl_xyz;
>
> END;
>
> My question is in the SELECT INTO statement, will I get the value of val1
> from the INSERT INTO in the same transaction
> even though the transaction has not ended yet.
> I think no.
> How would I get that latest value of val1 in the same transaction because
> its not committed yet as the transaction has not ended.
>
> Thanks,
>
> ~Harpreeet

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