1. 查看所有數(shù)據(jù)庫(kù)容量大小

select

? ? table_schema as '數(shù)據(jù)庫(kù)',

? ? sum(table_rows) as '記錄數(shù)',

? ? sum(truncate(data_length/1024/1024, 2)) as '數(shù)據(jù)容量(MB)',

? ? sum(truncate(index_length/1024/1024, 2)) as '索引容量(MB)'

? ? from information_schema.tables

? ? group by table_schema

? ? order by sum(data_length) desc, sum(index_length) desc;

2. 查看所有數(shù)據(jù)庫(kù)各表容量大小

select

table_schema?as?'數(shù)據(jù)庫(kù)',

table_name?as?'表名',

table_rows?as?'記錄數(shù)',

truncate(data_length/1024/1024,?2)?as?'數(shù)據(jù)容量(MB)',

truncate(index_length/1024/1024,?2)?as?'索引容量(MB)'

from information_schema.tables

order?by data_length?desc, index_length?desc;

3. 查看指定數(shù)據(jù)庫(kù)容量大小

例：查看mysql庫(kù)容量大小

select

table_schema?as?'數(shù)據(jù)庫(kù)',

sum(table_rows)?as?'記錄數(shù)',

sum(truncate(data_length/1024/1024,?2))?as?'數(shù)據(jù)容量(MB)',

sum(truncate(index_length/1024/1024,?2))?as?'索引容量(MB)'

from information_schema.tables

where table_schema='mysql';

4. 查看指定數(shù)據(jù)庫(kù)各表容量大小

例：查看mysql庫(kù)各表容量大小

select

table_schema?as?'數(shù)據(jù)庫(kù)',

table_name?as?'表名',

table_rows?as?'記錄數(shù)',

truncate(data_length/1024/1024,?2)?as?'數(shù)據(jù)容量(MB)',

truncate(index_length/1024/1024,?2)?as?'索引容量(MB)'

from information_schema.tables

where table_schema='mysql'

order?by data_length?desc, index_length?desc;