postgresqlHow do I use PostgreSQL's bigserial data type?

PostgreSQL's bigserial data type is an auto-incrementing 64-bit integer. It is used to generate a unique number for each row in a table. This can be useful when a unique identifier is needed for each record in a table, such as a primary key.

Example code

CREATE TABLE users (
    id bigserial PRIMARY KEY,
    name varchar(255) NOT NULL
);

This code creates a table with a bigserial column named id that is set as the primary key. After creating the table, you can insert records into it and id will automatically be assigned a unique number.

Code explanation

1. CREATE TABLE: This is a SQL command used to create a new table.
2. id bigserial PRIMARY KEY: This creates a bigserial column named id and sets it as the primary key.
3. name varchar(255) NOT NULL: This creates a varchar column named name that is not allowed to be NULL.

Helpful links

• PostgreSQL Documentation - bigserial
• W3Schools - SQL CREATE TABLE

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