Re: Performance Concern

On Thu, 2003-10-23 at 08:21, John Pagakis wrote:
> Greetings.
>
> I have a table that will require 100,000 rows initially.
>
> Assume the following (some of the field names have been changed for
> confidentiality reasons):
>
> CREATE TABLE baz (
> baz_number CHAR(15) NOT NULL,
> customer_id CHAR(39),
> foobar_id INTEGER,
> is_cancelled BOOL DEFAULT false NOT NULL,
> create_user VARCHAR(60) NOT NULL,
> create_datetime TIMESTAMP DEFAULT 'now()' NOT NULL,
> last_update_user VARCHAR(60) NOT NULL,
> last_update_datetime TIMESTAMP DEFAULT 'now()' NOT NULL,
> CONSTRAINT PK_baz PRIMARY KEY (baz_number)
> );
>
> ALTER TABLE baz
> ADD FOREIGN KEY (customer_id) REFERENCES purchase (customer_id);
>
> ALTER TABLE baz
> ADD FOREIGN KEY (foobar_id) REFERENCES foobar (foobar_id);
>
>
> Using JDBC, it took approximately one hour to insert 100,000 records. I
> have an algorithm to generate a unique baz_number - it is a mixture of alpha
> and numerics.

Using an int for identification is certainly suggested, however it
sounds like you may be short a few indexes on the foreign key'd fields.

EXPLAIN ANALYZE output is always nice..