Çë½ÌÒ»¸öACCESSµÄ²éѯÓï¾ä£¡
Òª×éºÏ4ÕűíµÄ²éѯ£¬·Ö±ðÊÇA±í£¬B±í£¬C±í£¬D±í£»
A±í
Game_id Game_Name
1 abc
B±í
Category_ID Category_Name Game_id
1 A 1
2 B 1
C±í
area_id area_name game_id
1 AB 1
2 CD 1
D±í
server_id server_name area_id
1 AAA 1
2 BBB 1
3 CCC 2
4 DDD 2
ͨ¹ý²éѯÔõôÏÔʾÏÂÃæµÄ½á¹û£º
Game_Name Category_Name area_name server_name
1 A AB AAA
1 A AB BBB
1 &n
Ïà¹ØÎÊ´ð£º
ÎÒÈç¹ûÏÈÒª¶Ô±íÖÐXH×Ö¶Î×öÒ»ÏÂÅжÏ,È»ºóдһ¸öÎÂܰµÄ¶Ô»°¿òÌáʾÓû§XH×Ö¶ÎֵΪ0£¬ÄÇ×Ö¶ÎXH¸ÃÔõôȡ³öÀ´ÄØ? ´ó¼Ò°ïæ¿´¿´£¡ ллÁË£¬Ô´´úÂëÈçÏ£¬Êý¾Ý¿âÒÑÁ¬½Ó
C# code:
OleDbConnection conn = new OleDbConn ......
ÔõÑùÇå³ýACCESS»º´æ
ACCESS°æÓеãÀäÇå
Õâ¸öÄÄλ¸ßÈË»á
СµÜ¼±ÓÃ
²»»á SORRY
»°ËµÂ¥Ö÷ ÎÒÔÚSQLµÄµÚÒ»¸öÎÊÌâ¶¼ÊÇÄã½â¾öµÄ ллÄã ÎÒÓ¡ÏóÉî¿Ì
ÒýÓÃ
²»»á SORRY
»°ËµÂ¥Ö÷ ÎÒÔÚSQLµÄµÚÒ» ......
ÔÚAccessÈí¼þÀ¿ÉÒÔÖ±½ÓÉèÖÃÈÕÆÚΪNow(),ºÃÏñÊÇÕâÑù°É¡£
ͨ¹ýsqlÓï¾ä£¬ALTER TABLE [article] ADD [date] datetime
µ«ÊÇÖ±½ÓÔÚºóÃæ¼ÓNow()£¬½á¹û³ö´í£¬Ôõôͨ¹ýsqlÓï¾äÖ±½ÓÉèÖóɵ±Ç°ÈÕÆÚ£¬¶ø²»ÓÃÍùÀïÃæ¼Ó£¿ ......
×î½ü×¼±¸Îª¹«Ë¾ÍøÕ¾ÓÃVB×ö¸ö²úƷչʾÉú³É£¬Éú³É²¿·Ö»ù±¾Ã»ÎÊÌ⣬
ÎÊÌâ³öÏÖÔÚ²éѯ²¿·Ö£¬Ê¹ÓÃÁËMSHFelxGrid(DATAGrid²»ÄÜÂú×ã²Ù×÷ÐèÇó)£¬±¾À´ÒÔΪÊÕ¹¤ÁË£¬×òÌìÔٴβâÊÔµÄʱºò·¢ÏÖÁËÒÔÏÂÎÊÌâ
µ±Êý¾Ý¿â×Ö¶ÎΪ¡ ......
ÎÒÔÚSQL2000ÖÐÏÂÃæµÄÕâ¾äÊÇûÎÊÌâµÄ,¿Éµ½ÁËaccessÀï¾Í»áÁË´í
select max(classname) as classname,max(parentpath) as parentpath,max(rootid) as rootid,max(classid) as classid from prodclass where parentpa ......