courses/understanding_spanner/solution/orders-db-schema.sql

CREATE TABLE Customers (
     CustomerID STRING(36) NOT NULL,
     CompanyName STRING(MAX) NOT NULL, 
     Name STRING(MAX) NOT NULL,
     Region STRING(MAX) NOT NULL,
     Address STRING(MAX) NOT NULL
) PRIMARY KEY (CustomerID);

CREATE TABLE Orders (
     OrderID STRING(36) NOT NULL, 
     OrderDate Date NOT NULL, 
     CustomerID STRING(36) NOT NULL,
     CONSTRAINT FK_Orders_Customers FOREIGN KEY (CustomerID) REFERENCES Customers (CustomerID)
) PRIMARY KEY (OrderID);

CREATE TABLE OrdersDetails (
    OrderID STRING(36) NOT NULL, 
    ProductID STRING(36) NOT NULL,
    Qty INT64 NOT NULL,
    Price FLOAT64
) PRIMARY KEY (OrderID, ProductID)
, INTERLEAVE IN PARENT Orders ON DELETE CASCADE;