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.tablesgroup?by?table_schemaorder?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

selecttable_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.tablesorder?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.tableswhere?table_schema='smartmonitor'order?by?data_length desc, index_length desc;