mysql 如何查看表的大小

mysql 查看表的大小方法:1、查看所有数据库各表容量大小,代码为【truncate(data_length/1024/1024, 2) as '数据容量(MB)'】;2、查看指定数据库各表容量大小。

mysql 如何查看表的大小

mysql 查看表的大小方法

1.查看所有数据库容量大小

select
table_schema as '数据库',
su~ R n ^ mm(tabl d h y k Oe_rows) as '记S V W e X .  @录数v 4 x',
sum(truncate(data_length/1024/1024, 2)) as '数据容量(MB)',
sum(truncate(index_length/1024/1024, 2)) asf c 7 3 '索引容量(MB)'
from information_schk ? o o g M Wema.tables
group by t/ % a c l ^ _ - Jable_schema
order by sum(data_length) desc,y c # sum(index_length) desc;

2.查看所有数据库各表容量大小

select
table_schema as '数据库',
table_name as '表名',
ta9 + + )ble_rows as '记录数',A L @ } m
truncate(data_length/1024/1024, 2) as '数据容量(MB)',
truncate(index_length/1024/1024, 2) as '索引容量(M} ; q & [ u ? #B)'
fro! O m * S ~ Em inforx 4 m $mation_s0 ] 8 Q y u a 9chema.tables
order by data_length desc, index_length desc+ o C D 1 * F;

3.查看指定数据库容量大小

例:查看mysql库容量大小

selC Q I *ect
table_schema as '数据库',
sum(table_rows) as '记录数',
sum(truncate(data_length/1024/1024, 2)) as '数据容q a o量(MB)',
sum(truncate(index_length/1024/1024, 2)) as '索引容量(MB)'d | y
fr. o J F t + som information_schema.tables
where table_schema='mysql';

4.查看指定数据库各表容量大小

例:查看mysql库各表容量大小

select
table_schema as '数据库',
table_name as '表名',2 7 {
table_rows as '记录数',
truncate(data_length/1024/1024L * 2 b C /, 2) as '数据容量(! # y yMB)',
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;

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