Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

C#ÖÐÓÃÓÚÁ¬½ÓSQLÊý¾Ý¿âµÄSQLHelperÀà

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data;
using System.Data.SqlClient;   //ÒýÓÃÃüÃû¿Õ¼ä
namespace DAL
{
    /*******************************************************************************
    * Name: SQLHelper
    * File: SQLHelper.cs
    * Description: ÓÃÓÚÍê³É¶ÔÊý¾Ý¿âµÄÏà¹Ø²Ù×÷
    * Author: Ñ©ÀÇ
    * DateTime: 2010Äê05ÔÂ13ÈÕ
    *******************************************************************************/
    public class SQLHelper
    {
        //ÉèÖÃÁ¬½Ó×Ö·û´® —— SQL ServerÑé֤ģʽµÄÁ¬½Ó×Ö·û´®
        //public static string strConn = @"server = PANLING;database = StudentMIS;uid = sa;pwd = sa";
        //ÉèÖÃÁ¬½Ó×Ö·û´® —— WindowsÑé֤ģʽµÄÁ¬½Ó×Ö·û´®
        public static string strConn = @"server = T403-004\HB_SQLSERVER;database = DB_LibraryManage;Integrated Security = SSPI";
        /// <summary>
        /// ¹¦ÄÜÃèÊö£ºÖ´ÐÐADO.NETÔö¡¢É¾¡¢¸Ä²Ù×÷
        /// </summary>
        /// <param name="strText">ÊäÈë²ÎÊý —— ÒªÖ´ÐеÄSQLÓï¾ä(ÃüÁîÎı¾)</param>
        /// <param name="cmdType">ÊäÈë²ÎÊý —— ÒªÖ´ÐеÄSQLÃüÁîÀàÐÍ</param>
        /// <param name="SqlParams">ÊäÈë²ÎÊý —— ÒªÖ´ÐеÄSQLÓï¾äÖеIJÎÊýÁбí(ÃüÁî²ÎÊýÁбí)</param>
        /// <returns>·µ»ØÖ´ÐÐÓ°ÏìµÄÐÐÊý</returns>
        public static int MyExecu


Ïà¹ØÎĵµ£º

Xml×Ö·û´®ÓëC#¶ÔÏóÖ®¼äÏ໥ת»»

ÎÒÃdz£³£ÐèÒª¶ÁÈ¡xmlÎļþ£¬°ÑÀïÃæµÄÐÅϢת»¯ÎªÎÒÃÇ×Ô¶¨ÒåµÄÀàÐÍ£¬»òÔò°É×Ô¶¨ÒåÀàÐÍת»¯ÎªXml×Ö·û´®¡£ÔÚÕâÀï½éÉÜÒ»¸ö±È½Ï¼òµ¥µÄ¶ÔÏóת»¯·½·¨¡£ÔÚÎÒ×Ô¼ºµÄFramworkÀïÃæÒ²¶à´ÎÓõ½¡£ÀïÃæÉæ¼°µ½½Úµã¡¢ÊôÐÔ¡¢¼¯ºÏ¡£
ʾÀýÒ» ¸ÃxmlÎļþÉæ¼°µ½ÊôÐÔ¡¢½Úµã¼¯ºÏ²»Éæ¼°¸ö½Úµã£º
<?xml version="1.0" encoding="utf-8"?>
<da ......

SQL Server 2008±íÉè¼ÆÆ÷ÖÐÎÞ·¨±£´æÐÞ¸Ä

µ±Ê¹ÓÃMicrosoft SQL Server 2008 Management Studioʱ£¬ÓÐʱÔÚ±íÉè¼ÆÆ÷ÖжԱíËù×öµÄ¸ü¸ÄÎÞ·¨±£´æ£¬¾ßÌå±íÏÖΪ£ºµã»÷±£´æ°´Å¥ºóµ¯³ö±£´æ¶Ô»°¿òÌáʾ£º²»ÔÊÐí±£´æÐÞ¸Ä(Saving changes is not permitted)£¬µ¯³öµÄ¶Ô»°¿òÖ»ÓÐ2¸ö°´Å¥¿ÉÒÔµã»÷£¬Ò»¸öCancelÒ»¸öSave Text File£¬Ç°Ò»¸ö¾Í²»ÓÃ˵ÁË£¬ºóÒ»¸ö±£´æµÄÎļþ¸ù±¾Ã»ÒâÒ壨¿ÉÒ ......

sql Íâ¼ü ɾ³ý

 1¡£ÆóÒµ¹ÜÀíÆ÷  
  ´ò¿ªÄ㽨ÓÐÍâ¼üµÄ±í£­£­ÓÒ»÷±í£­£­Éè¼Æ±í£­£­ÔÚÉÏ·½µã¿ª’¹ÜÀíÔ¼Êø‘£­£­½«¼¶Á¬É¾³ýºÍ¼¶Á¬¸üÐµĹµ´òÉϾͿÉÒÔÁË  
  2¡£²éѯ·ÖÎöÆ÷  
  alter   table   sc  
  add  
  constraint   forei     ......

ADO.NETºÍSQL SERVERÊý¾Ý¿âÖеÄÊý¾ÝÀàÐͶÔÓ¦¹ØÏµ

ÎÒÃÇÖªµÀ£¬ÔÚSQL SERVERÖÐÓÐBit, Float, Int , CharµÈµÈһϵÁеÄÊý¾ÝÀàÐÍ£¬¶øÔÚDOT NETÖУ¬ÓÐBoolean,Double,Int 32,StringµÈÊý¾ÝÀàÐÍÓëÖ®¶ÔÓ¦¡£ Ò²¾ÍÊÇ˵£¬Êý¾Ý¿âÖеÄÊý¾ÝÀàÐÍÓëDOT NETµÄÊý¾ÝÀàÐÍÖ®¼ä£¬ÓÐÒ»¸öÓ³Éä¹ØÏµ¡£Ï±íÊÇËûÃǵÄÓ³Éä¹ØÏµ£º
 
dot netÖеÄÊý¾ÝÀàÐÍ       &n ......

sql ϵͳº¯Êý

1.×Ö·û´®º¯Êý
³¤¶ÈÓë·ÖÎöÓà 
datalength(Char_expr) ·µ»Ø×Ö·û´®°üº¬×Ö·ûÊý,µ«²»°üº¬ºóÃæµÄ¿Õ¸ñ  
substring(expression,start,length) ²»¶à˵ÁË,È¡×Ó´®  
right(char_expr,int_expr) ·µ»Ø×Ö·û´®ÓÒ±ßint_expr¸ö×Ö·û  
×Ö·û²Ù×÷Àà  
upper(char_expr) תΪ´óÐ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ