查整个库的状态:select concat(truncate(sum(data_length)/1024/1024,2),’MB’) as data_size,concat(truncate(sum(max_data_length)/1024/1024,2),’MB’) as max_data_size,concat(truncate(sum(data_free)/1024/1024,2),’MB’) as data_free,concat(truncate(sum(index_length)/1024/1024,2),’MB’) as index_sizefrom information_schema.tables where TABLE_SCHEMA = ‘databasename’;查单表:select concat(truncate(sum(data_length)/1024/1024,2),’MB’) as data_size,concat(truncate(sum(max_data_length)/1024/1024,2),’MB’) as max_data_size,concat(truncate(sum(data_free)/1024/1024,2),’MB’) as data_free,concat(truncate(sum(index_length)/1024/1024,2),’MB’) as index_sizefrom information_schema.tables where TABLE_NAME = ‘tablename’;