テーブルサイズ確認

mysql> SELECT Data_length,Index_length,TABLE_NAME,TABLE_SCHEMA FROM information_schema.tables where TABLE_SCHEMA = "dbt2";
+-------------+--------------+------------+--------------+
| Data_length | Index_length | TABLE_NAME | TABLE_SCHEMA |
+-------------+--------------+------------+--------------+
|   200081408 |     23724032 | customer   | dbt2         |
|       16384 |            0 | district   | dbt2         |
|    25755648 |            0 | history    | dbt2         |
|    11026432 |            0 | item       | dbt2         |
|     3686400 |            0 | new_order  | dbt2         |
|   272580608 |            0 | order_line | dbt2         |
|    18415616 |     14204928 | orders     | dbt2         |
|   381648896 |            0 | stock      | dbt2         |
|       16384 |            0 | warehouse  | dbt2         |
+-------------+--------------+------------+--------------+

参考
http://q.hatena.ne.jp/1283251244
http://dev.mysql.com/doc/refman/5.1/ja/tables-table.html