【转】mysql查看表空间占用情况

${database} 为数据库的名称

/*1.查看索引

（1）单位是GB*/ 

SELECT CONCAT(ROUND(SUM(index_length)/(**), ), ' GB') AS 'Total Index Size'
FROM information_schema.TABLES WHERE table_schema LIKE '${database}';
/*
+------------------+
| Total Index Size |
+------------------+
| 1.70 GB |
+------------------+
*/
/*
（2）单位是MB
*/
SELECT CONCAT(ROUND(SUM(index_length)/(*), ), ' MB') AS 'Total Index Size'
FROM information_schema.TABLES WHERE table_schema LIKE '${database}';
/*
   其中“database”为你所要查看的数据库
*/

/*
2.查看表空间
*/
SELECT CONCAT(ROUND(SUM(data_length)/(**), ), ' GB') AS 'Total Data Size'
FROM information_schema.TABLES WHERE table_schema LIKE '${database}';
/*
+-----------------+
| Total Data Size |
+-----------------+
| 3.01 GB |
+-----------------+
*/
/*
3.查看数据库中所有表的信息
*/
SELECT CONCAT(table_schema,'.',table_name) AS 'Table Name',
    table_rows AS 'Number of Rows',
    CONCAT(ROUND(data_length/(**),),' G') AS 'Data Size',
    CONCAT(ROUND(index_length/(**),),' G') AS 'Index Size' ,
    CONCAT(ROUND((data_length+index_length)/(**),),' G') AS'Total'
FROM information_schema.TABLES
WHERE table_schema LIKE '${database}';