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;