I would say yes as long as table_b still references the same sequence as
table_a. Sequences are stored and maintained separately from the tables
they are used in. If you drop and recreate a sequence, the starting number
of that sequence will be 1 even though the database using the sequence has
500 records in it. You can reset the value of the sequence (seq_a) to the
highest value currently stored in the database for the column that seq_a is
being used with. When I ported my Access97 table to Postgres, I had to set
the value of each sequence I used to match the highest value stored in my
tables.
-----Original Message-----
From: archiver [SMTP:archiver@db.geocrawler.com]
Sent: Saturday, February 27, 1999 3:51 PM
To: pgsql-sql@hub.org
Subject: [SQL] Simple Question??
Here's a question that maybe you can answer easily...
If I am using a sequence (seq_a) in table_a
...then "create table_b as select * from table_a"
...does table_b start using that sequence (seq_a), starting at the
point
where table_a left off??
I have a 1GB table that I want to optimize by reordering it, and I
will want
the new table to use the same sequence to generate the primary key.
I will
then drop the original table and rename the table_b to table_a.
Any clues?
Tim Perdue
tim@perdue.net
