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
1.ɾ³ý±í
select 'drop table ' || table_name || ' purge;'
from user_tables
where length(table_name) <= 4;
ɾ³ý´øÔ¼ÊøµÄ±í
Drop table ±íÃû cascade constraints;
2.²éѯview&ͬÒå´Ê
--˵Ã÷£º¿ÉÒÔ¸ù¾ÝÊÓͼµÄtext_length ......
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 ......
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
impo ......
µÚÒ»ÖÖ£º
SELECT
CASE
WHEN
price IS NULL THEN
'Not yet priced'
WHEN
price < 10 THEN
'Very Reasonable Title'
WHEN
price >= 10 AND
price < 20 THEN
'Coffee Table Title'
EL ......