Log—mysql checks the capacity occupied by each database and a table in the database

View the specified database capacity

SELECT

table_schema AS '数据库',

sum( table_rows ) AS '记录数',

sum(

TRUNCATE ( data_length / 1024 / 1024, 2 )) AS '数据容量(MB)',

sum(

TRUNCATE ( index_length / 1024 / 1024, 2 )) AS '索引容量(MB)'

FROM

information_schema.TABLES

WHERE

table_schema = 'uepcloudallinone'; -- 这是库名，不是表名

View the capacity of each table in the specified database

SELECT

table_schema AS '数据库',

table_name AS '表名',

table_rows AS '记录数',

TRUNCATE ( data_length / 1024 / 1024, 2 ) AS '数据容量(MB)',

TRUNCATE ( index_length / 1024 / 1024, 2 ) AS '索引容量(MB)'

FROM

information_schema.TABLES

WHERE

table_schema = 'uepcloudallinone' -- 这里是数据库的名字不是表名

ORDER BY

data_length DESC,

index_length DESC;

※※※Check the occupancy status of the specified library table in the specified database※※※※

SELECT 
table_schema AS '数据库', 
table_name AS '表名', 
table_rows AS '记录数',
TRUNCATE ( data_length / 1024 / 1024, 2 ) AS '数据容量(MB)', 
TRUNCATE ( index_length / 1024 / 1024, 2 ) AS '索引容量(MB)'
FROM 
information_schema.TABLES
WHERE
table_schema = 'uepcloudallinone' -- 这里是数据库的名字不是表名
and
table_name = 'base_history_data' -- 表名
ORDER BY 
data_length DESC, 
index_length DESC;

View all database capacity sizes

SELECT

table_schema AS '数据库',

sum( table_rows ) AS '记录数',

sum(

TRUNCATE ( data_length / 1024 / 1024, 2 )) AS '数据容量(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;