EVOLUTION-MANAGER

Edit File: column_generated_virtual_drop_column.result

DROP TABLE IF EXISTS logs; CREATE TABLE logs ( id INT, record JSON, message VARCHAR(255) GENERATED ALWAYS AS (json_extract(`record`, '$.message')) VIRTUAL ) ENGINE=Mroonga DEFAULT CHARSET=utf8mb4; INSERT INTO logs(id, record) VALUES (1, '{"level": "info", "message": "start"}'); INSERT INTO logs(id, record) VALUES (2, '{"level": "info", "message": "restart"}'); INSERT INTO logs(id, record) VALUES (3, '{"level": "warn", "message": "abort"}'); ALTER TABLE logs DROP COLUMN message; SELECT * FROM logs; id record 1 {"level": "info", "message": "start"} 2 {"level": "info", "message": "restart"} 3 {"level": "warn", "message": "abort"} DROP TABLE logs;