Hands-On Microservices with Rust

up.sql

The up script is simple and contains a statement that creates the memberships table with three fields—the id of a membership, the id of a channel in the channel_id column whose member is a user with the user_id column:

CREATE TABLE memberships (  id SERIAL PRIMARY KEY,  channel_id INTEGER NOT NULL REFERENCES channels,  user_id INTEGER NOT NULL REFERENCES users);