MYSQL_HOME=D:\+aquarius\mysql-5.6.11-winx64
Path=……;%MYSQL_HOME%\bin
my.bat
mysqld --defaults-file = %MYSQL_HOME%/my.cnf
my.cnf: here
MYSQL_HOME=D:\+aquarius\mysql-5.6.11-winx64
Path=……;%MYSQL_HOME%\bin
my.bat
mysqld --defaults-file = %MYSQL_HOME%/my.cnf
my.cnf: here
Analyze TableMySQL的Optimizer(優化元件)在優化SQL語句時,首先需要收集一些相關信息,其中就包括表的cardinality
select tbs as 表空間名稱, sum(totalM) as 空間合計M, sum(usedM) as 已使用空間, sum(remainedM) as 剩餘空間M, su