复制SELECT CONCAT(TRUNCATE(SUM(data_length)/1024/1024,磁盘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_size FROM information_schema.tables WHERE TABLE_NAME = datainfo; 1.2.3.4.5.