»ù´¡¼¸ºõΪÁã ×Ôѧ
»¹ÓÐÏ£ÍûÄÜÍÆ¼öЩÊé
ͬʱ»¹ÔÚѧc#
sql server 2000
sql server 2000²»ÒªÕÛÌÚÌ«¾Ã£¬È»ºó¾Í2005£¬
ÖÁÓÚÊé¼®£¬¿ÉÒÔÏÈÖ±½Ó ¿´sql serverµÄ°ïÖú
http://www.w3school.com.cn/sql/sql_distinct.asp
ÕâÍøÕ¾Àï¶¼ÊÇЩ»ù´¡£¬ºÜÊʺÏÐÂÊÖ¿´¡£
ÎÒ¸øÄãÒ»¸öÁ´½Ó£¬µ±ÄãÐèÒªµÄʱºò£¬Äã» ......
±íA£¬ÁÐ a£¬b£¬c ÀàÐÍ·Ö±ðΪint£¬char£¬char
±íb£¬ÁÐd£¬e£¬ÀàÐÍ·Ö±ðΪchar£¬char
ÏÖÔÚÏëinsert A select ?,d,e from b
? ´¦£¬ÏëÈÃËûÖðÌõÔö³¤1
ÈçÓÐ3Ìõ£¬aÔÓÐ3Ìõ
ÔòÐÂÔö¼ÓµÄ¾ÍÊÇ 4£¬d£¬e£»5£¬d£¬e£»6£¬d£¬e
Õâ¸ö£¿´¦µÄÖµÓ¦¸ÃÔõôд£¿
ÁÐa·Ç×ÔÔö³¤Áж¨Òå
²»ÄÜÓÃÓαꡣ¿ÉÒÔÓô洢¹ý³Ì£¬¶àÌõÓï¾ä¡£
Çë½Ì¶®µÄÈ ......
select TableName_Eng from tablenameengtochi where TableName_Chi = ¹Ý²ØÍ¼ÊéÐÅÏ¢±í £»²éѯûÓз´Ó¦ ҲûÓб¨´í
£¿Çë¸ßÊÖÖ¸µã£¡
ÉÙµ¥ÒýºÅ
SQL code:
select TableName_Eng from tablenameengtochi where TableName_Chi = '¹Ý²ØÍ¼ÊéÐÅÏ¢±í'
MySQL£¿
²»¹ýÒ²Ò»Ñù£¬±ê×¼SQL
MSSQL:
SQL code:
select Tabl ......
Õâ¸öÀý³ÌÊý¾Ý¿âpubs´æ´¢¹ý³Ìreptq1ÄÜÕýÈ·Ö´ÐУ¬
¸Ä³É×Ô¼ºµÄÊý¾Ý¿âºÍ´æ´¢¹ý³Ì¾Í±¨´í3704£¨Ó¦ÓóÌÐò¶¨Òå»ò¶ÔÏó¶¨Òå´íÎó£©
´æ´¢¹ý³ÌÔÚ²éѯ·ÖÎöÆ÷ÄÜÕýÈ·Ö´ÐУ¬¶øÇÒÒ»Ö±ÔÚÓõģ¬ÕæÊÇÔÎËÀ¡£
Private Sub CommandButton5_Click()
Dim cnn As New ADODB.Connection
Dim rs As New ADODB.Recordset
Dim adocm ......
ÎÒSQL֨װװºÃÁË µ«ÊÇ»¹ÓиöÎÊÌâ ÎÒ֮ǰÓùýµÄÊý¾Ý¿âÃû²»ÄÜÔÙÓÃÁË ÕâÊǸö´óÎÊÌâ Çó¸ßÊÖ°ïæ
ÎÞͼÎÞÕæÏà
ÊDz»ÊÇÔÚwindows·þÎñÀﻹûɾ³ý
֮ǰÓùýµÄÊý¾Ý¿âÓб¸·Ýô£¿£¿
ÒýÓÃ
ÎÞͼÎÞÕæÏà
ÎÞͼÎÞÕæÏà
Ö±½Ó°ÑMDFºÍLDFÄóöÀ´¸½¼Ó
лл´ó¼Ò µ«ÊÇÎÒ˵µÄÄǸöÎÊÌâÒÀÈ»´æÔÚ Ö®Ç°¹ÖÎÒûÓн²Çå³þ
  ......
ÓÐÕâÑùµÄ±í¸ñ
sid ѧУ °à¼¶
001 school1 one
001 school2 one
001 school3 two
002 school1 one
002 school2 one
002 school3 two
...
...
¸ù¾ÝÒÔÉϱí¸ñÉú³ÉÒÔÏÂЧ¹ûµÄÊÓͼ
sid ѧУ1 °à¼¶1 ѧУ2 °à¼¶2 ѧУ3 °à¼¶3 ..... ѧУn °à¼¶n
001 school1 one school2 one school ......