Postgres 13

By using db<>fiddle, you agree to license everything you submit by Creative Commons CC0.
CREATE SCHEMA dannys_diner;
SET search_path = dannys_diner;

CREATE TABLE sales (
  "customer_id" VARCHAR(1),
  "order_date" DATE,
  "product_id" INTEGER
);

INSERT INTO sales
  ("customer_id", "order_date", "product_id")
VALUES
  ('A', '2021-01-01', '1'),
  ('A', '2021-01-01', '2'),
  ('A', '2021-01-07', '2'),
  ('A', '2021-01-10', '3'),
  ('A', '2021-01-11', '3'),
  ('A', '2021-01-11', '3'),
  ('B', '2021-01-01', '2'),
  ('B', '2021-01-02', '2'),
  ('B', '2021-01-04', '1'),
  ('B', '2021-01-11', '1'),
  ('B', '2021-01-16', '3'),
  ('B', '2021-02-01', '3'),
  ('C', '2021-01-01', '3'),
  ('C', '2021-01-01', '3'),
  ('C', '2021-01-07', '3');
 

CREATE TABLE menu (
  "product_id" INTEGER,
  "product_name" VARCHAR(5),
  "price" INTEGER
);

INSERT INTO menu
  ("product_id", "product_name", "price")
VALUES
  ('1', 'sushi', '10'),
  ('2', 'curry', '15'),
  ('3', 'ramen', '12');
  

CREATE TABLE members (
  "customer_id" VARCHAR(1),
  "join_date" DATE
);

INSERT INTO members
  ("customer_id", "join_date")
VALUES
  ('A', '2021-01-07'),
  ('B', '2021-01-09');
15 rows affected

3 rows affected

2 rows affected

SELECT *
  FROM dannys_diner.menu
 ORDER BY 1 


product_id
product_name
price


1
sushi
10

2
curry
15

3
ramen
12


UPDATE dannys_diner.menu AS m
   SET price = price * 2 
  FROM dannys_diner.sales AS s
 WHERE product_name = 'sushi'
   AND customer_id = 'A'
   AND s.product_id = m.product_id
1 rows affected

SELECT *
  FROM dannys_diner.menu
 ORDER BY 1 


product_id
product_name
price


1
sushi
20

2
curry
15

3
ramen
12