2026-03-12 21:01:38

Golden_Gate/example_01/cr_tables.sql

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+-- Create sequences for primary key generation
+CREATE SEQUENCE seq_products START WITH 1 INCREMENT BY 1;
+CREATE SEQUENCE seq_orders START WITH 1 INCREMENT BY 1;
+CREATE SEQUENCE seq_users START WITH 1 INCREMENT BY 1;
+CREATE SEQUENCE seq_transactions START WITH 1 INCREMENT BY 1;
+CREATE SEQUENCE seq_tasks START WITH 1 INCREMENT BY 1;
+
+-- Create tables with meaningful names and relevant columns
+CREATE TABLE products (
+    id NUMBER PRIMARY KEY,
+    name VARCHAR2(100),
+    category VARCHAR2(20),
+    quantity INTEGER
+);
+
+CREATE TABLE orders (
+    id NUMBER PRIMARY KEY,
+    description VARCHAR2(255),
+    status VARCHAR2(20)
+);
+
+CREATE TABLE users (
+    id NUMBER PRIMARY KEY,
+    created_at DATE DEFAULT SYSDATE,
+    username VARCHAR2(20),
+    age INTEGER,
+    location VARCHAR2(20)
+);
+
+CREATE TABLE transactions (
+    id NUMBER PRIMARY KEY,
+    amount NUMBER(10,2),
+    currency VARCHAR2(20)
+);
+
+CREATE TABLE tasks (
+    id NUMBER PRIMARY KEY,
+    status VARCHAR2(50),
+    priority INTEGER,
+    type VARCHAR2(20),
+    assigned_to VARCHAR2(20)
+);
+
+-- Create triggers to auto-generate primary key values using sequences
+CREATE OR REPLACE TRIGGER trg_products_pk
+BEFORE INSERT ON products
+FOR EACH ROW
+BEGIN
+    SELECT seq_products.NEXTVAL INTO :NEW.id FROM dual;
+END;
+/
+
+CREATE OR REPLACE TRIGGER trg_orders_pk
+BEFORE INSERT ON orders
+FOR EACH ROW
+BEGIN
+    SELECT seq_orders.NEXTVAL INTO :NEW.id FROM dual;
+END;
+/
+
+CREATE OR REPLACE TRIGGER trg_users_pk
+BEFORE INSERT ON users
+FOR EACH ROW
+BEGIN
+    SELECT seq_users.NEXTVAL INTO :NEW.id FROM dual;
+END;
+/
+
+CREATE OR REPLACE TRIGGER trg_transactions_pk
+BEFORE INSERT ON transactions
+FOR EACH ROW
+BEGIN
+    SELECT seq_transactions.NEXTVAL INTO :NEW.id FROM dual;
+END;
+/
+
+CREATE OR REPLACE TRIGGER trg_tasks_pk
+BEFORE INSERT ON tasks
+FOR EACH ROW
+BEGIN
+    SELECT seq_tasks.NEXTVAL INTO :NEW.id FROM dual;
+END;
+/