如何获取MySQL数据库表的大小？
要获取MySQL数据库表的大小，可以使用“information_schema.tables”。
这是了解所有表大小的语法。
SELECT TABLE_NAME AS `ALLTABLESNAME`, ROUND((DATA_LENGTH + INDEX_LENGTH) / 1024 / 1024) AS `TABLESIZEIN(MB)` FROM information_schema.TABLES WHERE TABLE_SCHEMA = "yourDatabaseName" ORDER BY (DATA_LENGTH + INDEX_LENGTH) ASC;
让我们应用以上语法来获取表的大小。
mysql> SELECT TABLE_NAME AS `ALLTABLESNAME`, ROUND((DATA_LENGTH + INDEX_LENGTH) / 1024 / 1024) AS `TABLESIZEIN(MB)` -> FROM information_schema.TABLES WHERE TABLE_SCHEMA = "business" -> ORDER BY (DATA_LENGTH + INDEX_LENGTH) ASC;
样本输出。
+------------------------------------------------------------------+-----------------+ | ALLTABLESNAME | TABLESIZEIN(MB) | +------------------------------------------------------------------+-----------------+ | studentrecordwithmyisam | 0 | | querydatedemo | 1 | | rownumberdemo | 0 | | secondtable | 0 | | spacecolumn | 2 | | table1 | 0 | | tbldemotrail | 2 | | tblstudent | 0 | | timestamptodatedemo | 1 | | uniqueconstraintdemo | 0 | | usernameandpassworddemo | 2 | | addingunique | 5 | | bookindexes | 0 | | tblf | 0 | | uniquedemo | 2 | | multipleindexdemo | 0 | | uniquedemo1 | 0 | | foreigntable | 5 | | tabledemo2 | 0 | | foreigntabledemo | 2 | | studentenrollment | 0 | | tabledemo3 | 0 | | duplicatebookindexes | 0 | | clonestudent | 2 | | student | 0 | +------------------------------------------------------------------+-----------------+ 26 rows in set (10.29 sec)
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