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mysql> show table status like 'test';
+------+--------+---------+------------+------+----------------+-------------+-----------------+--------------+-----------+----------------+---------------------+---------------------+------------+-----------------+----------+----------------+---------+
| Name | Engine | Version | Row_format | Rows | Avg_row_length | Data_length | Max_data_length | Index_length | Data_free | Auto_increment | Create_time | Update_time | Check_time | Collation | Checksum | Create_options | Comment |
+------+--------+---------+------------+------+----------------+-------------+-----------------+--------------+-----------+----------------+---------------------+---------------------+------------+-----------------+----------+----------------+---------+
| test | MyISAM | 10 | Dynamic | 2 | 20 | 40 | 281474976710655 | 1024 | 0 | NULL | 2010-04-26 14:51:06 | 2010-04-26 14:59:56 | NULL | utf8_general_ci | NULL | | | 
+------+--------+---------+------------+------+----------------+-------------+-----------------+--------------+-----------+----------------+---------------------+---------------------+------------+-----------------+----------+----------------+---------+
1 row in set (0.00 sec)

mysql> set names utf8;
Query OK, 0 rows affected (0.00 sec)

mysql> select * from test;
+--


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mysql Óï¾ä´íÎó - ÆäËûÊý¾Ý¿â¿ª·¢ / MySQL/Postgresql

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BEGIN
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  WHILE v1 > 0 DO
  SET v1 = v1 - 1;
  END WHILE;
END
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