create table tb_bbs_comment
(
    COMMENT_ID        varchar(20)   not null comment '댓글 ID'
        primary key,
    POST_ID           varchar(20)   not null comment '게시물 ID',
    CONTENT           text          not null comment '내용',
    PARENT_COMMENT_ID varchar(20)   null comment '부모 댓글 ID',
    DEPTH             int default 0 null comment '댓글 깊이 (0: 원댓글, 1: 대댓글)',
    REG_DTTM          datetime      null comment '등록 일시',
    RGTR              varchar(20)   null comment '등록자',
    MDFCN_DTTM        datetime      null comment '수정 일시',
    MDFR              varchar(20)   null comment '수정자',
    constraint fk_bbs_comment_post
        foreign key (POST_ID) references tb_bbs_post (POST_ID)
)
    comment '댓글';