一行語句查MySQL數據庫中各個表所佔空間(M)

SELECT
    table_name AS `Table` ,
    round(
        (
            (data_length + index_length) / 1024 / 1024
        ) ,
        2
    ) `Size (MB)`
FROM
    information_schema. TABLES
WHERE
    table_schema = "youDataBase";

查詢表中某一個字段的空間佔用

SELECT sum(char_length($字段名))/1024/1024 as 'M' FROM $yourTable;