SQLµÝ¹é²éѯÊý¾Ý
Tree±íÈçÏÂ:
NodeId ParentId NodeName
0 -1 Ò»
1 0 ¶þ
9 1 Èý
10 9 ËÄ
12 10 Îå
18 1 Áù
ÒÑÖª£ºNodeid Äܵõ½ NodeName µÄµÝ¹éÁ¬½Ó×Ö·û´®Âð£¿
Àý£º ÒÑÖª ½á¹û
NodeId:10 ËÄÈý¶þÒ»
NodeId:18 Áù¶þÒ»
NodeId:1 ¶þÒ»
½â¾ö·½·¨£º
1¡¢´´½¨±í½á¹¹¡£
³ÌÐò´úÂë
create table Tree(NodeId int,Paren
Ïà¹ØÎĵµ£º
SQLÄ£ºý²éѯÓï¾äºÍEscapeתÒå×Ö·û(2008-09-22 14:26:01)
±êÇ©£ºfrom תÒå×Ö·û sql µ¥ÒýºÅ ͨÅä·û escape it
ͨÅä·ûÃèÊöʾÀý%°üº¬Áã¸ö»ò¸ü¶à×Ö·ûµÄÈÎÒâ×Ö·û´®¡£WHERE title LIKE '%computer%' ½«²éÕÒ´¦ÓÚÊéÃûÈÎÒâλÖõİüº¬µ¥´Ê computer µ ......
±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
//×Ô¼º»¹¿ÉÒÔ¼ÓÉÏһЩ²éѯ ......
SQLPlus :http://www.orafaq.com/wiki/SQL*Plus_FAQ
http://download.oracle.com/docs/cd/B19306_01/appdev.102/b14261/sqloperations.htm
1. Transfer values from a sql scripts:
CNT=`sqlplus -s username/password1@dbname @getUVQuery_NULLCNT`;
Note : Remeber to use o ......
CREATE proc page
@RecordCount int output,
@QueryStr nvarchar(100)='table1',--±íÃû¡¢ÊÓͼÃû¡¢²éѯÓï¾ä
@PageSize int=20, --ÿҳµÄ´óС(ÐÐÊý)
@PageCurrent int=2, --ÒªÏÔʾµÄÒ³ ´Ó0¿ªÊ¼
@FdShow nvarchar (1000)='*', --ÒªÏÔʾµÄ×Ö¶ÎÁбí
@IdentityStr nvarchar (100)='id', --Ö÷¼ü
@WhereStr nvarchar ......
.Frm644 { display:none; }
¡¡¡¡1¡£ÒѾ¼ìÑéµÄÓï¾äºÍÒÑÔÚ¹²Ïí³ØÖеÄÓï¾äÖ®¼äÒªÍêȫһÑù
¡¡¡¡2¡£±äÁ¿Ãû³Æ¾¡Á¿Ò»ÖÂ
¡¡¡¡3¡£ºÏÀíʹÓÃÍâÁª½Ó
¡¡¡¡4¡£ÉÙ
Óöà²ãǶÌ×
¡¡¡¡5¡£¶àÓò¢·¢
¡¡¡¡
¡¡¡¡Óï¾äµÄÓÅ»¯²½ÖèÒ»°ãÓУº
¡¡¡¡1¡£µ÷ÕûsgaÇø£¬Ê¹µÃsgaÇøµÄÊÇÓÃ×îÓÅ¡£
¡¡
¡¡2¡£sqlÓï¾ä±¾ÉíµÄÓÅ»¯£¬¹¤¾ßÓÐexplain,sql trace ......