MYSQL:查看的数据库表空间

admin

• /*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';