Chore/postgres 17

postgresql-17/json_table.sql

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+CREATE TABLE IF NOT EXISTS books (
+    id integer NOT NULL,
+    name varchar NOT NULL,
+    data jsonb
+);
+
+INSERT INTO books (id, name, data)
+    VALUES (
+      1,
+      'High Performance PostgreSQL for Rails',
+      jsonb_build_object(
+        'publisher', 'Pragmatic Bookshelf; 1st edition (July 23, 2024)',
+        'isbn', '979-8888650387',
+        'author','Andrew Atkinson'));
+
+SELECT
+    isbn,
+    publisher,
+    author
+FROM
+    books,
+    JSON_TABLE (data, '$' COLUMNS (
+        publisher text PATH '$.publisher',
+        isbn text PATH '$.isbn',
+        author text PATH '$.author'
+    )) AS jt;
+

postgresql-17/merge.sql

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+-- MERGE in Postgres 15
+
+create table people (id int, name text);
+create table employees (id int, name text);
+
+insert into people (id, name) VALUES (1, 'Andy');
+
+MERGE INTO employees e
+USING people p
+ON e.id = p.id
+WHEN MATCHED THEN
+    UPDATE SET name = p.name
+WHEN NOT MATCHED THEN
+    INSERT (id, name)
+    VALUES (p.id, p.name)
+;
+-- RETURNING *; 
+
+--  id | name | id | name
+-- ----+------+----+------
+--   1 | Andy |  1 | Andy
+-- (1 row)

postgresql-17/setup.sh

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+docker pull postgres:17
+
+docker run --name my-postgres-container -e POSTGRES_PASSWORD=mysecretpassword -d postgres:17
+
+docker exec -it my-postgres-container psql -U postgres

postgresql-17/updatable_views.sql

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+create table employees (id int, name text, is_admin boolean);
+
+insert into employees (id, name, is_admin) VALUES (1, 'Andy', true);
+insert into employees (id, name, is_admin) VALUES (2, 'Jane', false);
+insert into employees (id, name, is_admin) VALUES (3, 'Jared', false);
+
+CREATE VIEW non_admins AS
+SELECT * FROM employees
+WHERE is_admin = false;
+
+SELECT * FROM non_admins;
+
+-- Updatable automatically by INSERT, UPDATE, DELETE
+
+-- With 17, added MERGE support
+-- Can be updated with trigger-updatable
+
+CREATE OR REPLACE FUNCTION update_employee()
+RETURNS TRIGGER AS $$
+BEGIN
+    UPDATE employees
+    SET is_admin = NEW.is_admin
+    WHERE id = OLD.id;
+
+    RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;
+
+CREATE TRIGGER trigger_update_non_admins
+INSTEAD OF UPDATE ON non_admins
+FOR EACH ROW
+EXECUTE FUNCTION update_employee();
+
+UPDATE non_admins SET is_admin = true where id = 2 RETURNING *;