Îʸö¶¯Ì¬µÄSQLÓï¾ä
±í
ÐÕÃû ¿Î³ÌÃû ·ÖÊý
ÕÅÈý Êýѧ 67
ÕÅÈý ÓïÎÄ 79
ÕÅÈý Ó¢Óï 78
ÀîËÄ Êýѧ 74
ÀîËÄ ÓïÎÄ 74
ÀîËÄ Ó¢Óï 100
µÃµ½µÄ½á¹ûÊÇ
ÐÕÃû ÓïÎÄ Êýѧ Ó¢Óï
ÕÅÈý 67 79 78
ÀîËÄ 74 74 100
¼ÓÈë¿ÆÄ¿²»Ö¹Õâ3ÖÖÄØ£¬ÎÒÏëÎʶ¯Ì¬SQLµÄд·¨£¬¾²Ì¬µÄÎÒ»áд£¬Ð»Ð»£¡
Ïà¹ØÎÊ´ð£º
ÎÒÒª×öÒ»¸ö¶¨µãʼþ£¬ÊÇÿÌìÍíÉÏ12µã¾Í°ÑÈý¸ö±íÀïµÄÐÅÏ¢·ÅÈëÒ»¸ö±íÀÎÒÏëÓô洢¹ý³ÌÀ´Ð´£¬ÔõÃ´Ð´ÄØ£¿£¬ÄÇλ¸ßÊÖ°ï°ïæ°É£¬·Ç³£¸Ðл£¡
Óû§ÃûÊÇΨһµÄ
±íA ×Ö¶Î
Óû§Ãû£ºName ,ÓÊÏ䣺Ema ......
´ó¼ÒºÃ£¬ÎÒ×î½üά»¤Ò»¸öÏîÄ¿£¬100¶à¸ö±í
Ö»ÄÜÓÃjdbcÖ±Á¬
Óöµ½Á˶à¸ö±í ¹ØÁª ²éѯµÄÇé¿ö Çë´ó¼ÒÖ¸½Ì
±ÈÈç
student(studentid,classid)
class(classid,classname)
class_teacher(classid,teacherid)Õâ¸öÊÇÖмä±í ......
ÎÒÓÐÒ»¸ö±í£¬½á¹¹ÊÇÕâÑù¡£
ת³ö µ¥Î» תÈ뵥λ ±ÊÊý ½ð¶î
date(Ö÷) outid(Ö÷) inid(Ö÷) num amt
2009 1 2 1 500 Ϊ 1 µ¥Î» ÔÚ2009Ä ......
ÈçÏÂ2ÕÅ±í£º
table1:
node_id
parent_id
root_id
value
table2:
node_id
status
±í1´æ´¢ÁËÒ»¿ÃÊ÷£¬±í2´æ´¢Á˽ڵã״̬£¬ÎÊÌâÈçÏ£º
ÈçºÎÓÃSQLÓï¾ä»ñµÃ״̬statusΪ1µÄ½ÚµãµÄËùÓÐ×Ó½ÚµãÒÔ¼°ÆäÏÂ×ÓÊ÷ÖÐËùÓÐ½Ú ......
clientserial devseral chunnelnum devdata5
CZ0001 308001 5000 11.1
CZ0001 308001 5001 11.2
CZ0001 308001 5002 11.3
CZ0001 3080 ......