mysql查询库表大小

— 查看所有数据库容量大小

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;

— 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',
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
ORDER BY
data_length DESC,
index_length DESC;

— 查看指定数据库容量大小

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 = 'sys';

— 查看指定数据库各表容量大小

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 = 'sys' -- 查看mysql库各表容量大小
ORDER BY
data_length DESC,
index_length DESC;

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