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CREATE TABLE example ( id BIGSERIAL PRIMARY KEY, rv_id BIGINT NOT NULL, uuid VARCHAR(36) ); INSERT INTO example (rv_id, uuid) ( VALUES (22, 'tom'), (23, 'angela') ) RETURNING *; ALTER TABLE example ADD COLUMN offset_id BIGINT GENERATED ALWAYS AS IDENTITY(SEQUENCE NAME offset_sequence) ; SELECT setval('offset_sequence', (SELECT EXTRACT(epoch FROM now())+10000000000));

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