discord-bot/db/migrations/3_minecraft-server-migrate.sql

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SQL

-- Create the new table
CREATE TABLE IF NOT EXISTS minecraft
(
server_discord integer not null,
server_minecraft text not null,
PRIMARY KEY (server_discord, server_minecraft),
FOREIGN KEY (server_discord) REFERENCES servers (server)
);
-- Import in the data
INSERT INTO minecraft (server_discord, server_minecraft)
SELECT server, server_minecraft
FROM servers
where server_minecraft is not null;
-- delete the col in teh server table
ALTER TABLE servers
DROP COLUMN server_minecraft;