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)/(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}';