在MySQL Workbench中運行以下SQL語句:
— 以GB爲單位
SELECTCONCAT(ROUND(SUM(index_length)/(1024*1024*1024), 6), ‘ GB’) AS ‘Total Index Size’
FROM
information_schema.TABLES
WHERE
table_schema LIKE ‘database’;
— 以MB爲單位
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
是待查看數據庫的名稱,例如:lsqdb%
。運行結果如下圖所示:
2. 查看數據庫的數據空間大小
在MySQL Workbench中運行以下SQL語句:
— 以GB爲單位
SELECT
CONCAT(ROUND(SUM(data_length)/(1024*1024*1024), 6), ‘ GB’) AS ‘Total Data Size’
FROM
information_schema.TABLES
WHERE
table_schema LIKE ‘database’;
— 以MB爲單位
SELECT
CONCAT(ROUND(SUM(data_length)/(1024*1024), 6), ‘ MB’) AS ‘Total Data Size’
FROM
information_schema.TABLES
WHERE
table_schema LIKE ‘database’;
其中,database
是待查看數據庫的名稱,例如:lsqdb%
。運行結果如下圖所示:
3. 查看數據庫中所有表的信息
在MySQL Workbench中運行以下SQL語句,查看數據庫中所有表的表名、錶行數、數據空間大小、索引空間大小和總大小:
SELECT
CONCAT(table_schema,’.’,table_name) AS ‘Table Name’,
table_rows AS ‘Number of Rows’,
CONCAT(ROUND(data_length/(1024*1024),6),’ MB’) AS ‘Data Size’,
CONCAT(ROUND(index_length/(1024*1024),6),’ MB’) AS ‘Index Size’,
CONCAT(ROUND((data_length+index_length)/(1024*1024),6),’ MB’) AS’Total Size’
FROM
information_schema.TABLES
WHERE
table_schema LIKE ‘database’;
其中,database
是待查看數據庫的名稱,例如:lsqdb%
。運行結果如下圖所示: