RE: Data Type to store Leading Zero(0)

Hi,

How about storing the actual number in TEXT column and adding a separate INT primary key column where you either copy the number or use it as a generated column?

Or, if you actually want to include the leading zeroes in the primary key, how about two-column primary key like this:

number_of_leading_zeroes smallint,
the_number integer

So, the number "0005556879" would become a primary key (3, 5556879).

Sincerely,
Anssi Kanninen

From: Nidhi Gupta <nidhig631(at)gmail(dot)com>
Sent: keskiviikko 20. tammikuuta 2021 13.20
To: soumik(dot)bhattacharjee(at)kpn(dot)com
Cc: pgsql-admin(at)postgresql(dot)org
Subject: Re: Data Type to store Leading Zero(0)

Use datatype smallint(1) for storing zero or use Boolean datatype.

On Wed, Jan 20, 2021, 4:43 PM <soumik(dot)bhattacharjee(at)kpn(dot)com<mailto:soumik(dot)bhattacharjee(at)kpn(dot)com>> wrote:
Hello Experts,

As per business needs we need to store Zero(0) in primary key column of table with this kind of value --> 07******** with applications written in Java microservices.

We are not able to use numeric data type as it trims the Zero value in leading, but it’s also a performance impact if we define varchar in the data type.

Please suggest.

Thanks