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REPLICATE ( character_expression, integer_expression)
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character_expression
×Ö·ûÊý¾ÝÐ͵Ä×ÖĸÊý×Ö±í´ïʽ£¬»òÕß¿ÉÒÔÒþʽת»»Îª nvarchar »ò ntext µÄÆäËûÊý¾ÝÀàÐ͵Ä×ÖĸÊý×Ö±í´ïʽ¡£
integer_expression
¿ÉÒÔÒþʽת»»Îª int µÄ±í´ïʽ¡£Èç¹û integer_expression Ϊ¸º£¬½«·µ»Ø¿Õ×Ö·û´®¡£
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nvarchar »ò ntext
1 £ºSelect Replicate('abc',2) ----------------abcabc
2 £ºSelect Replicate£¨'abc',-2) ----------------null
3 £ºSelect Replicate('abc',0)--------------- ÎÞ
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1.DATEADDº¯Êý
ÔÚÏòÖ¸¶¨ÈÕÆÚ¼ÓÉÏÒ»¶Îʱ¼äµÄ»ù´¡ÉÏ£¬·µ»ØÐ嵀 datetime Öµ¡£
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DATEADD ( datepart , number, date )
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datepart
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Ëõд
Year
yy, yyyy
quarter
qq, q
Month
mm, m
dayofyear
dy, y
Day
dd, d
Week
wk, ww
Hour
hh
minute
mi, n
second
ss, s
millisecond
m ......
Æô¶¯SQL Server (SQLEXPRESS)·þÎñʱÌáʾ´íÎó£¬Ê¼þ²é¿´Æ÷ÏÔʾÒÔÏÂÐÅÏ¢£¨ID 9003£©£º
´«µÝ¸øÊý¾Ý¿â 'master' ÖеÄÈÕ־ɨÃè²Ù×÷µÄÈÕ־ɨÃèºÅ (276:232:1) ÎÞЧ¡£´Ë´íÎó¿ÉÄÜָʾÊý¾ÝË𻵣¬»òÕßÈÕÖ¾Îļþ(.ldf)ÓëÊý¾ÝÎļþ(.mdf)²»Æ¥Åä¡£Èç¹û´Ë´íÎóÊÇÔÚ¸´ÖÆÆÚ¼ä³öÏֵģ¬ÇëÖØÐ´´½¨·¢²¼¡£·ñÔò£¬Èç¹û¸ÃÎÊÌâµ¼ÖÂÆô¶¯ÆÚ¼ä³ö´í£¬Çë´Ó± ......
1¡¢¼ì²éÊÇ·ñÓзǷ¨×Ö·û
public static boolean sql_inj(String str)
{
String inj_str = "'|and|exec|insert|select|delete|update|
count|*|%|chr|mid|master|truncate|char|declare|;|or|-|+|,";
//ÕâÀïµÄ¶«Î÷»¹¿ÉÒÔ×Ô¼ºÌí¼Ó
String[] inj_stra=inj_str.split("\\|");
for ......
----²é¿´ËùÓнDZ¾
Create table #y (txt text)
select name, iid = identity(int,1,1) into #x from SysObjects where xtype = 'TR'
declare @i int, @max int
declare @name varchar(40)
set @i = 1
select @max = max(iid) from #x
while @i <= @max
begin
select @name = name from #x w ......
C-#ÈëÞµä(µÚÈý°æ).pdf
using System;
using System.Data;
using System.Data.SqlClient;
namespace My_Student
{
static class Program
{
static void Main()
&n ......