Change the starting value of a serial - Postgresql

Question

I\'ve a little problem with serial : From a file, I filled my database in which I have a client ID (it is a serial and it is my primary key). I have 300 clients so 300 client ID

Answer 1

You can alter a sequence using RESTART WITH to change the current sequence number;

ALTER SEQUENCE test_seq RESTART WITH 300;

To get the sequence name if you created it using the serial keyword, use

SELECT adsrc FROM pg_attrdef WHERE adrelid = (SELECT oid FROM pg_class WHERE relname = 'table name goes here'); 

An SQLfiddle to test with.