PostgreSQL – How to Set Auto-Increment for a Column in pgAdmin

auto-incrementpgadminpostgresql

I have started to learn pgAdmin III to manage a PostgreSQL database. But it wasn't an easy to use application.

If I create or have created a table with pgAdmin III, how can I add "auto-increment"-functionality on a column id that has type integer?

Best Answer

two options: Use the "datatype" SERIAL or create a sequence and use this sequence as a default value for your integer:

CREATE SEQUENCE your_seq;
CREATE TABLE foo(
  id int default nextval('your_seq'::regclass),
  other_column TEXT
);
INSERT INTO foo(other_column) VALUES ('bar') RETURNING *;
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