how to compact mysql database

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MySQL optimized GROUPBY-loose index scan and compact index Scan

MySQL optimized GROUPBY-loose index scan and compact index scan ????? The most common method to satisfy the GROUPBY clause is to scan the entire table and create a new temporary table. All rows in each group in the table should be continuous, then

MySQL optimized group by-Loose index scan with compact index scan

The most general way to satisfy the GROUP BY clause is to scan the entire table and create a new temporary table, all rows of each group in the table should be contiguous, and then use the temporary table to locate the group and apply the cumulative

Mysql optimization Group BY (loose Index scan with compact index scan) _mysql

The most common way to satisfy a GROUP BY clause is to scan the entire table and create a new temporary table in which all rows of each group should be contiguous, and then use the temporary table to locate the group and apply the cumulative

MySQL optimizes group by (loose index scan and compact index scan) and mysqlgroup

MySQL optimizes group by (loose index scan and compact index scan) and mysqlgroup The most common method to satisfy the group by clause is to scan the entire table and create a new temporary table. All rows in each GROUP in the table should be

"Whole 1.2.3" MySQL database backup and restore command combat

"Backing up single database-Multiple parameters" syntax: Mysqldump-u username-P database name > backup file name"View the character set of a database"Mysql> Show variables like ' character_set% '; +--------------------------+-------------------------

Mysql Database storage engine and branch status analysis _mysql

MySQL with the corresponding creators and internal developers of the departure, creating a variety of engines and branches, so that MySQL hopes to continue to flourish. In MySQL after 2008 years of Sun's acquisition and the 2009 Oracle acquisition

Recommend a compact Mysql database backup script (PHP) without a virtual host _mysql

The recent work often need to back up the MySQL database on the remote server to the local computer, a direct backup of the MySQL data directory, but because of different coding reasons often arise. Later, my friend recommended me to use a very

Installation tutorial for MySQL Compact Edition

1. Create a new file named My.ini. My.ini in the Bin folder of the MySQL extract directory, with the contents of[Client]port=3306default-character-set=utf8[mysqld]port=3306character_set_server=utf8basedir=%mysql_home%

Mud: mysql HELP command instructions, mud mysql

Mud: mysql HELP command instructions, mud mysql Do you need to remember many mysql commands when installing, managing, and using mysql. In addition, for beginners, there are not many commands that do not know how to apply them. For veterans, many

Mud: mysql HELP command instructions, mud mysql

Mud: mysql HELP command instructions, mud mysql This article was sponsored by Xiuyi linfeng and first launched in the dark world. Do you need to remember many mysql commands when installing, managing, and using mysql. In addition, for beginners,

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