On Fri, 21 Dec 2001, Sterin, Ilya wrote:
>Depends on the database you are using?
Thank you for all who answer my question, but apparently it really depend
on the database - no generic answer. Except probably to make sure the
table have a primary key and generate the key in the Perl script before
Hi.
> PostgreSQL:
> $dbh->do(CREATE SEQUENCE table_uid_seq)
> $dbh->do(CREATE TABLE table ( uid INT4 DEFAULT nextval('table_uid_seq')
> ))
> $dbh->do(INSERT INTO table (table_uid_seq.NEXTVAL, field...) VALUES (...))
> $dbh->...(SELECT last_value as unique_id FROM table_uid_seq)
This way to
It was pointed out to me:
>Oracle:
>> $dbh->do(CREATE SEQUENCE table_uid_seq START WITH 1 INCREMENT BY 1)
>> $dbh->do(CREATE TABLE table ( uid NUMBER(10) PRIMARY KEY ... ))
>> $dbh->do(INSERT INTO table (table_uid_seq.NEXTVAL, field...) VALUES (...))
>meanwhile someone else inserts some records
Mitsuda, Alex writes:
> Need to be a bit careful though, if there are "simultaneous" inserts going
> on @@identity is not guaranteed to give back the correct key...besides a
> numeric primary key, it's always good practice to have an alternate primary
> key with which you can check against...
On Friday, December 21, 2001, at 12:55 PM, Brent Cowgill wrote:
> most databases provide some
> similar way of reading the last generated guid similarly to what
> the sequence
> numbers do for you in postgres and oracle.
>
>
the last record inserted by process A may not be the last record
ins
ssage-
From: William R Ward [mailto:[EMAIL PROTECTED]]
Sent: Friday, December 21, 2001 4:38 PM
To: [EMAIL PROTECTED]
Subject: Re: To find a just-inserted record
[EMAIL PROTECTED] (Chris Spurgeon) writes:
> Another data point for this discussion if you're connecting to a
> Microso
[EMAIL PROTECTED] (Chris Spurgeon) writes:
> Another data point for this discussion if you're connecting to a
> Microsoft Access Database via DBI, you can get the most recently created
> primary key by using the @@identity value. Like this
>
> $sth = $dbh->prepare( 'select @@identi
: Friday, December 21, 2001 3:56 PM
To: S P Arif Sahari Wibowo
Cc: [EMAIL PROTECTED]
Subject: Re: To find a just-inserted record
Maybe you should post some table structures so we can see what you're doing.
And what database you're using.
If you are using a guid as the unique identifie
Maybe you should post some table structures so we can see what you're doing.
And what database you're using.
If you are using a guid as the unique identifier, most databases provide
some
similar way of reading the last generated guid similarly to what the
sequence
numbers do for you in postgres
On Fri, 21 Dec 2001, Brent Cowgill wrote:
>It depends on the database driver you are connected to.
All those solutions are using primary key. These solutions have several
issues:
- It require the table to have unique non null primary key. Not all table
have primary key.
- It require either th
Depends on the database you are using?
Ilya
-Original Message-
From: S P Arif Sahari Wibowo
To: [EMAIL PROTECTED]
Sent: 12/21/01 10:02 AM
Subject: To find a just-inserted record
Hi!
Do you know how to make sure a perl script can found a record that the
script just inserted?
Say the pe
It depends on the database driver you are connected to.
For example:
MySQL:
$dbh->do(CREATE TABLE table ( uid INT AUTO_INCREMENT PRIMARY KEY ... ) )
$dbh->do( INSERT INTO table (field...) VALUES (...))
using DBI, $unique_id = $dbh->{'mysql_insertid'};
Oracle:
$dbh->do(CREATE SEQUENCE table_uid_se
12 matches
Mail list logo
