Question

I’m switching from MySQL to PostgreSQL and I was wondering how can I have an INT column with AUTO INCREMENT. I saw in the PostgreSQL docs a datatype called SERIAL, but I get syntax errors when using it.

Answer 1

Yes, SERIAL is the equivalent function.

CREATE TABLE foo (     id SERIAL,     bar varchar );  INSERT INTO foo (bar) VALUES ('blah'); INSERT INTO foo (bar) VALUES ('blah');  SELECT * FROM foo;  +----------+ | 1 | blah | +----------+ | 2 | blah | +----------+ 

SERIAL is just a create table time macro around sequences. You can not alter SERIAL onto an existing column.