MYSQL:查看的数据库表空间
[*]/*1.查看索引
[*]
[*]（1）单位是GB*/
[*]
[*]SELECT CONCAT(ROUND(SUM(index_length)/(1024*1024*1024), 6), ' 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)/(1024*1024), 6), ' 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)/(1024*1024*1024), 6), ' 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/(1024*1024*1024),6),' G') AS 'Data Size',
[*] CONCAT(ROUND(index_length/(1024*1024*1024),6),' G') AS 'Index Size' ,
[*] CONCAT(ROUND((data_length+index_length)/(1024*1024*1024),6),' G') AS'Total'
[*]FROM information_schema.TABLES
[*]WHERE table_schema LIKE 'database';
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