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mysql> show variables like '%profiling%';
+------------------------+-------+
| Variable_name | Value |
+------------------------+-------+
| profiling | OFF |
| profiling_history_size | 15 |
+------------------------+-------+
2 rows in set (0.03 sec)
profiling²ÎÊýֵΪOFF£¬ËµÃ÷ûÓдò¿ª¸Ã¹¦ÄÜ¡£
profiling_history_size²ÎÊýֵΪ15±íʾ£¬¼Ç¼×î½ü15´ÎµÄ²éѯÀúÊ·¡£¸ÃÖµ¿ÉÒÔÐ޸ġ£
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mysql> set profiling=1;
Query OK, 0 rows affected (0.00 sec)
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mysql> show variables like '%profiling%';
+------------------------+-------+
| Variable_name | Value |
+------------------------+-------+
| profiling | ON |
| profiling_history_size | 15 |
+------------------------+-------+
2 rows in set (0.00 sec)
profilingֵΪON˵Ã÷ÒѾÆô¶¯¸Ã¹¦ÄÜ¡£
ϱß˵˵ÈçºÎʹÓÃshow profiles;
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mysql> select * from user;
+------+-----------+
| id | name |
+------+-----------+
| 22 | abc |
| 223 | dabc |
| 2232 | dddabc |
| 45 | asdsagd |
| 23 |
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http://blog.163.com/mysqldba@126/blog/static/1315356342009931103834396/
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http://dev.mysql.com/doc/refman/5.1/en/server-status-variables.html
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Com_xxx
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