CREATE TABLE session_photo (
    session_photo_id BIGINT AUTO_INCREMENT PRIMARY KEY,
    folder_name VARCHAR(255) NULL,
    file_name VARCHAR(255) NULL,
    url VARCHAR(255) NULL,
    session_photo_order INT NULL,
    session_id BIGINT NULL,
    created_at DATETIME(6) NULL,
    modified_at DATETIME(6) NULL,
    CONSTRAINT FK_session FOREIGN KEY (session_id) REFERENCES session (session_id)
);

INSERT INTO session_photo (folder_name, file_name, url, session_photo_order, session_id, created_at, modified_at)
SELECT folder_name, file_name, url, 0,session_id,created_at, modified_at
FROM session
WHERE url IS NOT NULL;

ALTER TABLE session
DROP COLUMN url,
DROP COLUMN file_name,
DROP COLUMN folder_name;