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? If you cannot use system restoration, it may be another reason. You can refer to the following solutions: 1. In addition, in the control panel/performance and maintenance/management tools/"services", a "SystemRestoreService" in the right window needs to be opened for system restoration services, you can find out if it has been started, if not, double-click it and select "start" as "automatic" or "Manual", and then press the application. 2. Anothe

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)mysql> drop database test;ERROR 1290 (HY000): The MySQL server is running with the--super-read-only option so it cannot execute this statementmysql> set global super_read_only=0;Query OK, 0 rows Affected (0.00 sec)mysql> drop database test;Query OK, 0 rows Affected (0.00 sec)mysql> set global Super_read_only=1;Query OK, 0 rows Affected (0.00 sec)mysql> set global group_replication_allow_local_disjoint_gtids_join=on;Query OK, 0 rows Affected (0.00 sec)mysql> start group_replication;Query OK, 0 r

Recently help the company's several project team carried out different aspects of performance optimization, found that several projects have some common problems. Write an article here summarizing these types of questions and their corresponding solutions. Convenient for other project group reference. Frequently asked Questions: Open the page very slowly, some projects open a page unexpectedly more than 20

Common methods for processing cross-row group computing reports and solutions for computing reports and computing reportsReport description The order amount is calculated by month based on the order table and specified year (parameter), and compared with the monthly amount of the previous order, and the same month amount as last year. The report style is as follows: Note that the ratio of the same month l

Numerical Analysis (PHP implementation) Two: two solutions to the linear equation group