WHENEVER SQLERROR EXIT SQL.SQLCODE

CREATE TABLE dds_ai_customers (
  customer_id     NUMBER GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
  customer_name   VARCHAR2(100) NOT NULL,
  region          VARCHAR2(30) NOT NULL,
  account_owner   VARCHAR2(60) NOT NULL,
  risk_rating     VARCHAR2(20) NOT NULL,
  tax_id          VARCHAR2(30),
  annual_revenue  NUMBER(12,2)
);