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问题描述
I'm a bit confused by MySQL concepts: session vs connection.
When talking about connecting to MySQL, we use connection terminology, connection pool, etc.
However in the MySQL online doc: http://dev.mysql.com/doc/refman/4.1/en/server-system-variables.html it talks about session variables.
They are quite similar. How to distinguish them?
Thanks in advance.
解决方案
A session is just a result of a successful connection. Any MySQL client requires some connection settings to establish a connection and after the connection has been established it acquires a connection id (thread id) and some context which is called session.
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