PostgreSQL ngasilake auto-incrementing IDs (biasane kanggo primary keys) nganggo sequences — obyek khusus sing ngasilake nomer unik sing nambah. SERIAL minangka shorthand sing nggawe sequence kanthi otomatis, lan IDENTITY minangka padanan SQL-standard sing modern.
SERIAL — shorthand klasik
users (
id SERIAL ,
name TEXT
);
users (name) ();
