Check Mysql Database Size

SELECT ROUND(  SUM(data_length + index_length) / 1024 / 1024  ) TOTAL_MB,  ROUND(SUM(data_length) / 1024 / 1024) DATA_MB,  ROUND(  SUM(index_length) / 1024 /1024  ) INDEX_MB  FROM information_schema.TABLES;

+----------+---------+----------+ 
|
TOTAL_MB | DATA_MB | INDEX_MB |  +----------+---------+----------+ 
|     
944 |     466 |      478 |  +----------+---------+----------+ 
1
row in

set
(0.04 sec) 

SELECT
     TABLE_SCHEMA,
     ENGINE,
     ROUND(
     SUM(data_length + index_length) / 1024 / 1024
     ) TOTAL_MB,
     ROUND(SUM(data_length) / 1024 / 1024) DATA_MB,
     ROUND(
     SUM(index_length) / 1024 / 1024
     ) INDEX_MB,
     count(*) "TABLES"
     FROM
     information_schema. TABLES
     GROUP BY
     TABLE_SCHEMA,
     ENGINE
     ORDER BY 3 DESC; 

+--------------------+--------------------+----------+---------+----------+--------+ 
|
TABLE_SCHEMA       | ENGINE             | TOTAL_MB | DATA_MB | INDEX_MB | TABLES | 
+--------------------+--------------------+----------+---------+----------+--------+ 
|
zwc                | MyISAM             |      485 |     191 |      294 |      1 | 
|
zwc                | InnoDB             |      456 |     273 |      183 |      1 | 
|
common_schema      | InnoDB             |        2 |       2 |        0 |     11 | 
|
mysql              | MyISAM             |        1 |       1 |        0 |     22 | 
|
information_schema | MyISAM             |        0 |       0 |        0 |      9 | 
|
mysql              | CSV                |        0 |       0 |        0 |      2 | 
|
information_schema | MEMORY             |        0 |       0 |        0 |     28 | 
|
common_schema      | MyISAM             |        0 |       0 |        0 |      7 | 
|
performance_schema | PERFORMANCE_SCHEMA |        0 |       0 |        0 |     17 | 
|
common_schema      | NULL              

|     NULL

|    NULL

|     NULL

|     62 |  +--------------------+--------------------+----------+---------+----------+--------+ 
10
rows

in
set
(0.03 sec) 

Check table number:

SELECT
TABLE_SCHEMA,
ENGINE,
ROUND(
SUM(data_length + index_length) / 1024 / 1024
) TOTAL_MB,
ROUND(SUM(data_length) / 1024 / 1024) DATA_MB,
ROUND(
SUM(index_length) / 1024 / 1024
) INDEX_MB,
count(*) "TABLES"
FROM
information_schema. TABLES
GROUP BY
TABLE_SCHEMA,
ENGINE
ORDER BY 3 DESC;