问如何获得一个MySQL数据库的表的大小？

SELECT TABLE_NAME AS "Table Name", 

table_rows AS "Quant of Rows", ROUND( (

data_length + index_length

) /1024, 2 ) AS "Total Size Kb"

FROM information_schema.TABLES

WHERE information_schema.TABLES.table_schema = 'YOUR SCHEMA NAME/DATABASE NAME HERE'

LIMIT 0 , 30

SELECT table_schema "DB Name", 

Round(Sum(data_length + index_length) / 1024 / 1024, 1) "DB Size in MB" 

FROM   information_schema.tables 

GROUP  BY table_schema; 

DB Name              |      DB Size in MB

mydatabase_wrdp             39.1

information_schema          0.0

SELECT 

    table_name AS `Table`, 

    round(((data_length + index_length) / 1024 / 1024), 2) `Size in MB` 

FROM information_schema.TABLES 

WHERE table_schema = "$DB_NAME"

    AND table_name = "$TABLE_NAME";

SELECT 

     table_schema as `Database`, 

     table_name AS `Table`, 

     round(((data_length + index_length) / 1024 / 1024), 2) `Size in MB` 

FROM information_schema.TABLES 

ORDER BY (data_length + index_length) DESC;