¡¾×ª¡¿²ÉÓÃp6spyÍêÕûÏÔʾhibernateµÄSQLÓï¾ä
×÷ÕߣºÇñÑó
QQ£º1964477
ËäÈ»ÔÚhibernateÖÐÓÐshow_sqlÑ¡Ïµ«ÊÇÏÔʾ³öÀ´µÄÓï¾ä´ó¶àÀàËÆ
select * from xxx where value=?
µ«ÊÇÓÐʱºòÎÒÃÇÐèÒªµÃµ½ÍêÕûµÄSQLÓï¾ä£¬Ôõô°ìÄØ£¿Ê¹ÓÃP6SPY¾Í¿ÉÒÔÍê³ÉÕâ¸öÈÎÎñ
p6spyÊÇÒ»¸ö¿ªÔ´Èí¼þ£¬Ëü¿ÉÒÔ¸ú×ÙÈκÎʹÓÃjdbcµÄÓ¦ÓòúÉúµÄÊý¾Ý¿â²Ù×÷¡£ÌرðÊʺÏÓÚ¼à¿Øejb·þÎñÆ÷²úÉúµÄ sql statements¡£
¹Ù·½ÍøÖ·£ºhttp://www.p6spy.com/
Ŀǰp6spy ÊÊÓõÄÓ¦Ó÷þÎñÆ÷°üÀ¨jboss, atg, orion, jonas, iplanet, weblogic, websphere, resin and tomcat.
ÏÂÃæÎÒ½éÉÜÒ»ÏÂp6spyÔÚtomcatÓ¦ÓóÌÐòÉϰ²×°µÄ²½Ö裺
£¨1£©http://www.p6spy.com/download.html£¬ÏÂÔØzip°ü
£¨2£©½âѹ³öp6spy.jar spy.propertiesÁ½¸öÎļþ
£¨3£©½«p6spy.jar ·ÅÈëÓ¦ÓóÌÐòµÄWEB-INF/libĿ¼£¬½«spy.properties·ÅÈëWEB-INF/classesĿ¼
£¨4£©ÐÞ¸Äspy.properties
realdriver =com.mysql.jdbc.Driver ½«ÕâÐÐÇ°ÃæµÄ#È¥µô
logfile = c:/spy.log ÐÞ¸ÄÒ»¸öÄãÐèÒªµÄÈÕÖ¾ÎļþÃû
£¨5£©ÐÞ¸Ähibernate.xml£¬ÐÞ¸Äconnection.driver_classµÄֵΪcom.p6spy.engine.spy.P6SpyDriver
£¨6£©ÖØÆôtomcat
£¨7£©ÕâÑùÔÚc:/ϵÄspy.log¼Ç¼ÁËÊý¾Ý¿âµÄ·ÃÎÊÇé¿ö¡£
ÔÎĵØÖ·£ºhttp://www.blogjava.net/qclass/archive/2006/08/21/64692.html
Ïà¹ØÎĵµ£º
char¡¢varchar¡¢textºÍnchar¡¢nvarchar¡¢ntext
charºÍvarcharµÄ³¤¶È¶¼ÔÚ1µ½8000Ö®¼ä£¬ËüÃǵÄÇø±ðÔÚÓÚcharÊǶ¨³¤×Ö·ûÊý¾Ý£¬¶øvarcharÊDZ䳤×Ö·ûÊý¾Ý¡£Ëùν¶¨³¤¾ÍÊdz¤¶È¹Ì¶¨
µÄ£¬µ±ÊäÈëµÄÊý¾Ý³¤¶ÈûÓдﵽָ¶¨µÄ³¤¶Èʱ½«×Ô¶¯ÒÔÓ¢ÎĿոñÔÚÆäºóÃæÌî³ä£¬Ê¹³¤¶È´ïµ½ÏàÓ¦µÄ³¤¶È£»¶ø±ä ......
ÔÚ½éÉÜGROUP BY ºÍ HAVING ×Ó¾äǰ£¬ÎÒÃDZØÐèÏȽ²½²sqlÓïÑÔÖÐÒ»ÖÖÌØÊâµÄº¯Êý£º¾ÛºÏº¯Êý£¬ÀýÈçSUM, COUNT, MAX, AVGµÈ¡£ÕâЩº¯ÊýºÍÆäËüº¯ÊýµÄ¸ù±¾Çø±ð¾ÍÊÇËüÃÇÒ»°ã×÷ÓÃÔÚ¶àÌõ¼Ç¼ÉÏ¡£
SELECT SUM(population) from bbc
¡¡¡¡ÕâÀïµÄSUM×÷ÓÃÔÚËùÓзµ»Ø¼Ç¼µÄpopulation×Ö¶ÎÉÏ£¬½á¹û¾ÍÊǸòéѯֻ·µ»ØÒ»¸ö½á¹û£¬¼´ËùÓйú¼ÒµÄ× ......
¡í1:È¡µÃµ±Ç°ÈÕÆÚÊDZ¾Ôµĵڼ¸ÖÜ
SQL> select to_char(sysdate,'YYYYMMDD W HH24:MI:SS') from
dual;
TO_CHAR(SYSDATE,'YY
-------------------
20030327 4 18:16:09
SQL> select to_char(sysdate,'W') from dual;
T
-
4 ......
SQLÓï¾ä¸´ÖƱíµÄ·½·¨
(2009-08-29 13:41:54)
±êÇ©£º
sql
·ÖÀࣺ¼ÆËã»ú֪ʶ
Èç¹ûÄ¿µÄ±íÒѾ´æÔÚ:
insert into DATAHR.DBO.GBITEM
select * from DEMO.DBO.GBITEM
Èç¹ûÄ¿µÄ±í²»´æÔÚ:
select * into DATAHR.DBO.GBITEM
from DEMO.DBO.GBITEM
¿ç¿âµ¼Èë
select * into [zk_news].[dbo].[News1] from [zk_media].[ ......
SQL ½Ì³Ì
1£©SQL ¼ò½é
SQL(Structured Query Language£¬½á¹¹²éѯÓïÑÔ)ÊÇÒ»¸ö¹¦ÄÜÇ¿´óµÄÊý¾Ý¿âÓïÑÔ¡£SQLͨ³£Ê¹ÓÃÓÚÊý¾Ý¿âµÄͨѶ¡£ANSI£¨ÃÀ¹ú¹ú¼Ò±ê׼ѧ»á£©Éù³Æ£¬SQLÊǹØÏµÊý¾Ý¿â¹ÜÀíϵͳµÄ±ê×¼ÓïÑÔ¡£SQLÓï¾äͨ³£ÓÃÓÚÍê³ÉһЩÊý¾Ý¿âµÄ²Ù×÷ÈÎÎñ£¬±ÈÈçÔÚÊý¾Ý¿âÖиüÐÂÊý¾Ý£¬»òÕß´ÓÊý¾Ý¿âÖмìË÷Êý¾Ý¡£Ê¹ÓÃSQLµÄ³£¼û¹ØÏµÊý¾Ý¿â¹ ......