-- 테이블 생성 SQL - blog_table
CREATE TABLE blog_table
(
    `blog_id`       INT            NOT NULL    AUTO_INCREMENT, 
    `blog_title`    VARCHAR(50)    NOT NULL, 
    `blog_content`  TEXT           NULL, 
    `blog_owner`    INT            NOT NULL, 
    `created_at`    TIMESTAMP      NOT NULL    DEFAULT CURRENT_TIMESTAMP, 
    `updated_at`    TIMESTAMP      NOT NULL    DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, 
     PRIMARY KEY (blog_id)
);