Ò׽ؽØͼÈí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

[MySQLÓÅ»¯] ÈçºÎʹÓÃSQL Profiler ÐÔÄÜ·ÖÎöÆ÷


[MySQLÓÅ»¯] -- ÈçºÎʹÓÃSQL Profiler ÐÔÄÜ·ÖÎöÆ÷
ʱ¼ä:2010-2-28À´Ô´:HaCMS¿ªÔ´ÉçÇø ×÷Õß:diesou
mysql µÄ sql ÐÔÄÜ·ÖÎöÆ÷Ö÷ÒªÓÃ;ÊÇÏÔʾ sql Ö´ÐеÄÕû¸ö¹ý³ÌÖи÷Ïî×ÊÔ´µÄʹÓÃÇé¿ö¡£·ÖÎöÆ÷¿ÉÒÔ¸üºÃµÄչʾ³ö²»Á¼ SQL µÄÐÔÄÜÎÊÌâËùÔÚ¡£ ÏÂÃæÎÒÃǾÙÀý½éÉÜһϠMySQL SQL Profiler µÄʹÓ÷½·¨£º Ê×ÏÈ£¬¿ªÆô MySQL SQL Profiler mysql> SELECT @@profiling; +------- ...
mysql µÄ sql ÐÔÄÜ·ÖÎöÆ÷Ö÷ÒªÓÃ;ÊÇÏÔʾ sql Ö´ÐеÄÕû¸ö¹ý³ÌÖи÷Ïî×ÊÔ´µÄʹÓÃÇé¿ö¡£·ÖÎöÆ÷¿ÉÒÔ¸üºÃµÄչʾ³ö²»Á¼ SQL µÄÐÔÄÜÎÊÌâËùÔÚ¡£ 
ÏÂÃæÎÒÃǾÙÀý½éÉÜһϠMySQL SQL Profiler µÄʹÓ÷½·¨£º 
Ê×ÏÈ£¬¿ªÆô MySQL SQL Profiler
mysql> SELECT @@profiling; 
+-------------+ 
| @@profiling | 
+-------------+ 
| 0 | 
+-------------+ 
1 row in set (0.00 sec) 
mysql> SET profiling = 1; 
Query OK, 0 rows affected (0.00 sec) 
mysql> SELECT @@profiling; 
+-------------+ 
| @@profiling | 
+-------------+ 
| 1 | 
+-------------+ 
1 row in set (0.00 sec) 
ĬÈÏÇé¿öÏ profiling µÄֵΪ 0 ±íʾ MySQL SQL Profiler ´¦ÓÚ OFF ״̬£¬¿ªÆô SQL ÐÔÄÜ·ÖÎöÆ÷ºó profiling µÄֵΪ 1. 
ͨ¹ý sql ÐÔÄÜ·ÖÎöÆ÷£¬ÎÒÃÇÀ´¶Ô±ÈһϠÏÂÁÐÓï¾äÇ°ºó 2 ´ÎÖ´Ðйý³ÌµÄ²îÒ죬¶ÔÎÒÃÇÁ˽â sql µÄÏêϸִÐйý³ÌÊǷdz£ÓаïÖúµÄ¡£
mysql> create table t_engines select * from t_engines1; 
Query OK, 57344 rows affected (0.10 sec) 
Records: 57344 Duplicates: 0 Warnings: 0 
mysql> select count(*) from t_engines; 
+----------+ 
| count(*) | 
+----------+ 
| 57344 | 
+----------+ 
1 row in set (0.00 sec) 
mysql> select count(*) from t_engines; 
+----------+ 
| count(*) | 
+----------+ 
| 57344 | 
+----------+ 
1 row in set (0.00 sec) 
mysql> SHOW PROFILES; 
+----------+------------+-------------------------------------------------+ 
| Query_ID | Duration | Query | 
+----------+------------+-------------------------------------------------+ 
| 26 | 0.


Ïà¹ØÎĵµ£º

תÌû sqlË÷Òý½á¹¹

Ò»¡¢ÉîÈëdz³öÀí½âË÷Òý½á¹¹
ʵ¼ÊÉÏ£¬Äú¿ÉÒÔ°ÑË÷ÒýÀí½âΪһÖÖÌØÊâµÄĿ¼¡£Î¢ÈíµÄSQL SERVERÌṩÁËÁ½ÖÖË÷Òý£º¾Û¼¯Ë÷Òý£¨clustered index£¬Ò²³Æ¾ÛÀàË÷Òý¡¢´Ø¼¯Ë÷Òý£©ºÍ·Ç¾Û¼¯Ë÷Òý£¨nonclustered index£¬Ò²³Æ·Ç¾ÛÀàË÷Òý¡¢·Ç´Ø¼¯Ë÷Òý£©¡£ÏÂÃ棬ÎÒÃǾÙÀýÀ´ËµÃ÷һϾۼ¯Ë÷ÒýºÍ·Ç¾Û¼¯Ë÷ÒýµÄÇø±ð£º
Æäʵ£¬ÎÒÃǵĺºÓï×ÖµäµÄÕýÎı¾Éí¾ ......

mysqlÖеÄinsertʱעÒâ×ÔÔö³¤×ֶεÄд·¨

±ÈÈ磺
insert into User values(x1,x2,x3,x4),(x1,x2,x3,x4),(x1,x2,x3,x4)
ÕâÖÖд·¨£¬ÁÐÊýÁ¿±ØÐëºÍ±íÖÐËùÓÐÁб£³ÖÒ»Ö£¬Ò²¾ÍÊÇ˵Áж¼ÒªÁгöÀ´¡£
Õâ¸öuser±íÀïÃæµÄÒ»¸ö×Ö¶Îx1ÊǸö×ÔÔö³¤×ֶΣ¬ÔòÓ¦¸ÃÌînullռλ
insert into User values(null,x2,x3,x4),(null,x2,x3,x4),(null,x2,x3,x4)
·ñÔò»á±¨´í¡£ ......

mysql±àÒë°²×°Óë²ÎÊý

mysql ±àÒë°²×°Óë±àÒë²ÎÊý
Ìí¼Ómysql×éºÍmysqlÓû§
 
[root@centos mysql]# groupadd mysql
[root@centos mysql]# useradd -g mysql mysql
 
±àÒëÓë°²×°
 
tar -zxvf mysql-5.1.35.tar.gz
./configure \
--prefix=/usr/local/mysql \
--localstatedir=/data/mysql/data \    m ......

SAP ʹÓÃSQL Trace£¨ST05£©

SAP ʹÓÃSQL Trace£¨ST05£©
SAP R/3 Ìṩ±ê×¼ABAP SQL ¸ú×Ù¹¤¾ß¡£Ê¹ÓÃT-Code:ST05 ¿ÉÒÔ½øÈë×·×ÙÉ趨»­Ã棺
 
         ÔÚTrace Modes ÇøÓòÖÐÑ¡ÔñÐèÒªÔÚSAP R/3 Server ÉÏtrace µÄ·¶Î§£º
         SQL Trace: ×·×Ù¸ÃA ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØͼ | ¸ÓICP±¸09004571ºÅ