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mysql> show variables;
mysql> show variables;
2, ²é¿´MySQL·þÎñÆ÷ÔËÐеĸ÷ÖÖ״ֵ̬
mysql> show global status;
mysql> show global status;
3, Âý²éѯ
mysql> show variables like '%slow%';  
+------------------+-------+  
| Variable_name    | Value |  
+------------------+-------+  
| log_slow_queries | OFF   |  
| slow_launch_time | 2     |  
+------------------+-------+  
mysql> show global status like '%slow%';  
+---------------------+-------+  
| Variable_name       | Value |  
+---------------------+-------+  
| Slow_launch_threads | 0     |  
| Slow_queries        | 279   |  
+---------------------+-------+
mysql> show variables like '%slow%';
+------------------+-------+
| Variable_name    | Value |
+------------------+-------+
| log_slow_queries | OFF   |
| slow_launch_time | 2     |
+------------------+-------+
mysql> show global status like '%slow%';
+---------------------+-------+
| Variable_name       | Value |
+---------------------+-------+
| Slow_launch_threads | 0     |
| Slow_queries        | 279   |
+---------------------+-------+
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4, Á¬½ÓÊý
mysql> show variables like 'max_connections';  
+-----------------+-------+  
| Variable_name   | Value |  
+-----------------+-------+  
| max_connections | 500   |  
+-----------------+-------+  
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