MySQL 테이블 구조 보기 DESCRIBE

DESCRIBE; DESC, EXPLAIN

MySQL 테이블 구조 보기, 테이블 구조 확인

1 실행예시 1

mysql> DESC employee;
+------------+-------------+------+-----+---------+----------------+
| Field      | Type        | Null | Key | Default | Extra          |
+------------+-------------+------+-----+---------+----------------+
| id         | int(11)     | NO   | PRI | NULL    | auto_increment |
| first_name | varchar(32) | NO   |     | NULL    |                |
| last_name  | varchar(32) | NO   |     | NULL    |                |
+------------+-------------+------+-----+---------+----------------+

2 실행예시 2

mysql> DESC wp_links;
+------------------+---------------------+------+-----+---------------------+----------------+
| Field            | Type                | Null | Key | Default             | Extra          |
+------------------+---------------------+------+-----+---------------------+----------------+
| link_id          | bigint(20) unsigned | NO   | PRI | NULL                | auto_increment |
| link_url         | varchar(255)        | NO   |     |                     |                |
| link_name        | varchar(255)        | NO   |     |                     |                |
| link_image       | varchar(255)        | NO   |     |                     |                |
| link_target      | varchar(25)         | NO   |     |                     |                |
| link_description | varchar(255)        | NO   |     |                     |                |
| link_visible     | varchar(20)         | NO   | MUL | Y                   |                |
| link_owner       | bigint(20) unsigned | NO   |     | 1                   |                |
| link_rating      | int(11)             | NO   |     | 0                   |                |
| link_updated     | datetime            | NO   |     | 0000-00-00 00:00:00 |                |
| link_rel         | varchar(255)        | NO   |     |                     |                |
| link_notes       | mediumtext          | NO   |     | NULL                |                |
| link_rss         | varchar(255)        | NO   |     |                     |                |
+------------------+---------------------+------+-----+---------------------+----------------+

3 실습

mysql> CREATE TABLE dept (
    ->   dept_no INT(11) unsigned NOT NULL,
    ->   dept_name VARCHAR(32) NOT NULL
    -> );
Query OK, 0 rows affected (0.07 sec)

mysql> DESC dept;
+-----------+------------------+------+-----+---------+-------+
| Field     | Type             | Null | Key | Default | Extra |
+-----------+------------------+------+-----+---------+-------+
| dept_no   | int(11) unsigned | NO   |     | NULL    |       |
| dept_name | varchar(32)      | NO   |     | NULL    |       |
+-----------+------------------+------+-----+---------+-------+
2 rows in set (0.00 sec)

4 같이 보기

• SHOW COLUMNS
• SHOW CREATE TABLE
• DESCRIBE
• MySQL 테이블 생성 쿼리 보기 SHOW CREATE TABLE
• MySQL 테이블 생성 CREATE TABLE

5 참고 자료

• http://dev.mysql.com/doc/refman/4.1/en/describe.html