Código
mysql> SELECT * FROM `vendor_comment` PROCEDURE ANALYSE ( ); +---------------------------------+-----------------------------+------------------------------+------------+------------+------------------+-------+-------------------------+--------+---------------------------------------------------------------------------------------------------------------+ | Field_name | Min_value | Max_value | Min_length | Max_length | Empties_or_zeros | NULLS | Avg_value_or_avg_length | Std | Optimal_fieldtype | +---------------------------------+-----------------------------+------------------------------+------------+------------+------------------+-------+-------------------------+--------+---------------------------------------------------------------------------------------------------------------+ | vsi.vendor_comment.id_vendor | 1 | 3 | 1 | 1 | 0 | 0 | 2.0000 | 0.8165 | ENUM('1','2','3') NOT NULL | | vsi.vendor_comment.id_buyer | 1 | 1 | 1 | 1 | 0 | 0 | 1.0000 | 0.0000 | ENUM('1') NOT NULL | | vsi.vendor_comment.comment | Buyer 1 comment TO CocaCola | Buyer 1 comment TO Microsoft | 27 | 31 | 0 | 0 | 28.6667 | NULL | ENUM('Buyer 1 comment to CocaCola','Buyer 1 comment to Ideas de Web','Buyer 1 comment to Microsoft') NOT NULL | | vsi.vendor_comment.registration | 2009-12-31 | 2009-12-31 | 10 | 10 | 0 | 0 | 10.0000 | NULL | ENUM('2009-12-31') NOT NULL | +---------------------------------+-----------------------------+------------------------------+------------+------------+------------------+-------+-------------------------+--------+---------------------------------------------------------------------------------------------------------------+ 4 ROWS IN SET (0.00 sec)