MySQL Tutorial/Table/Describe Table Structure — различия между версиями

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Версия 13:44, 26 мая 2010

Check the created table by issuing a "describe" command

DESCRIBE tableName;


To verify the table structure, use a DESCRIBE statement

mysql>
mysql>
mysql> CREATE TABLE myTable (
    -> id           int,
    -> first_name   VARCHAR(20),
    -> last_name    VARCHAR(20),
    -> sex          CHAR(1),
    -> start_date   DATE,
    -> end_date     DATE);
Query OK, 0 rows affected (0.05 sec)
mysql>
mysql> show tables;
+----------------+
| Tables_in_test |
+----------------+
| mytable        |
+----------------+
1 row in set (0.00 sec)
mysql>
mysql> describe myTable;
+------------+-------------+------+-----+---------+-------+
| Field      | Type        | Null | Key | Default | Extra |
+------------+-------------+------+-----+---------+-------+
| id         | int(11)     | YES  |     | NULL    |       |
| first_name | varchar(20) | YES  |     | NULL    |       |
| last_name  | varchar(20) | YES  |     | NULL    |       |
| sex        | char(1)     | YES  |     | NULL    |       |
| start_date | date        | YES  |     | NULL    |       |
| end_date   | date        | YES  |     | NULL    |       |
+------------+-------------+------+-----+---------+-------+
6 rows in set (0.00 sec)
mysql>
mysql> drop table myTable;
Query OK, 0 rows affected (0.00 sec)
mysql>