转载:https://rmohan.com/?p=4605 Change the default MySQL data directory with SELinux enabled This is a short article that explains how you change the default MySQL data directory and adjust SELinux to account for the changes. The article assumes that y…
原文地址:https://dev.mysql.com/doc/refman/5.7/en/explain-output.html 9.8.2 EXPLAIN Output Format The EXPLAIN statement provides information about the execution plan for a SELECT statement. EXPLAIN returns a row of information for each table used in the S…