CREATE DATABASE IF NOT EXISTS yoyuzh_portal DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci; USE yoyuzh_portal; CREATE TABLE IF NOT EXISTS portal_user ( id BIGINT PRIMARY KEY AUTO_INCREMENT, username VARCHAR(64) NOT NULL, email VARCHAR(128) NOT NULL, password_hash VARCHAR(255) NOT NULL, created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP, CONSTRAINT uk_portal_user_username UNIQUE (username), CONSTRAINT uk_portal_user_email UNIQUE (email) ); CREATE TABLE IF NOT EXISTS portal_file ( id BIGINT PRIMARY KEY AUTO_INCREMENT, user_id BIGINT NOT NULL, filename VARCHAR(255) NOT NULL, path VARCHAR(512) NOT NULL, storage_name VARCHAR(255) NOT NULL, content_type VARCHAR(255), size BIGINT NOT NULL, is_directory BIT NOT NULL DEFAULT b'0', created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP, CONSTRAINT fk_portal_file_user FOREIGN KEY (user_id) REFERENCES portal_user (id), CONSTRAINT uk_portal_file_user_path_name UNIQUE (user_id, path, filename) ); CREATE INDEX idx_user_created_at ON portal_user (created_at); CREATE INDEX idx_file_created_at ON portal_file (created_at);