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1¡¢ÔÚÊý¾Ý¿â½¨±íµÄʱºò×Ö¶ÎÖ±½ÓÉèÖÃΪDATETIMEÀàÐÍ£»
2¡¢Ö´ÐвåÈëµÄʱºòʹÓÃÈçÏÂÓï¾ä£º
PreparedStatement pstmt = conn.prepareStatement("insert into guestbook(gst_user,gst_title,gst_content,gst_ip,gst_time) values(?,?,?,?,getdate())");
3¡¢Òª°ÑÈÕÆÚ´ÓÊý¾Ý¿âÖÐÈ¡³ö£¬Ö´ÐÐÈçÏÂÓï¾ä£º
     Timestamp ts = rs.getTimestamp("gst_time");
     long lms = ts.getTime();
     Date date = new Date(lms);
     Time time = new Time(lms);
×îÖվͿÉÒÔÖ±½ÓʹÓÃdateºÍtimeÁË¡£
out.println("ÁôÑÔʱ¼ä£º" + date + " " + time);


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java Ä£ÄâselectorµÄ¸½´ø¹¦ÄÜ

package com.event;
import java.util.Map;
public interface EventListener {
 void onEvent(Map event);
}
package com.socket;
import java.nio.ByteBuffer;
import java.util.HashMap;
import com.event.EventListener;
/*
 * Ô¤´¦ÀíÀà
 */
public class BaseObject {
 private boole ......

SQL֪ʶÕûÀí

Ò»£ºSelectÓï¾ä£º
       select ×Ö¶ÎÃû from ±íÃû where Ìõ¼þ order by ÅÅÐò
see:select distinct ´Ó¶à¸öÏàͬ×Ö¶ÎÖÐץΨһֵ    
see:²éÕÒld_det_andy±íÖÐÓÐÊý¾Ýµ«ld_det_temp±íÖÐûÊý¾ÝµÄÊý¾Ý
        select * from ld_det_a ......

ÈÃUNIONÓëORDER BY²¢´æÓÚSQLÓï¾äµ±ÖÐ

http://www.cnblogs.com/yinzhenzhixin/archive/2009/01/07/1371064.html
ÔÚSQLÓï¾äÖУ¬UNION¹Ø¼ü×Ö¶àÓÃÀ´½«²¢ÁеĶà×é²éѯ½á¹û(±í)ºÏ²¢³ÉÒ»¸ö½á¹û(±í)£¬¼òµ¥ÊµÀýÈçÏ£º
SELECT [Id],[Name],[Comment] from [Product1]
UNION
SELECT [Id],[Name],[Comment] from [Product2]
ÉÏÃæµÄ´úÂë¿ ......

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SQL³£Ó÷ÖÒ³µÄ°ì·¨:
±íÖÐÖ÷¼ü±ØÐëΪ±êʶÁУ¬[ID] int IDENTITY (1,1)
1.·ÖÒ³·½°¸Ò»£º(ÀûÓÃNot InºÍSELECT TOP·ÖÒ³)
Óï¾äÐÎʽ£º 
SELECT TOP Ò³¼Ç¼ÊýÁ¿ *
from ±íÃû
WHERE (ID NOT IN
  (SELECT TOP (ÿҳÐÐÊý*(Ò³Êý-1)) ID
  from ±íÃû
  ORDER BY ID))
  ORDER BY ID
//×Ô ......
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