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

SQL Server CLRÈ«¹¦ÂÔÖ®ËÄ

CLR¿ÉÒÔʵÏÖDMLºÍDDLÁ½ÖÖ´¥·¢ÐÎʽ£¬µ«ÊDZ¾ÈËÒ»°ã²»½¨ÒéʹÓÃCLRµÄ´¥·¢Æ÷£¬Ö÷ÒªÊÇ¿¼Âǵ½Ð§ÂÊÎÊÌâ¡£±ÈÈçÎÒÃÇʹÓÃtriggerÀ´ÊµÏÖ·¢mailµÈ²Ù×÷ʱ£¬¾ÍÒª¿¼ÂÇpop3»òÊÇsmtpµÈ´ýʱ¼ä£¬ÒòΪtrigger±¾Ê¾ÍÊǸöÊÂÎñ£¬Ò²¾ÍÊÇ˵£¬ÔÚsmtpµÈ´ýʱ¼äÒ²ËãÔÚÁËÕû¸öÊÂÎñÖУ¬ÕâÑù¾Í»á´ó´óÓ°ÏìЧÂÊ¡£
1.CLR DML´¥·¢Æ÷
DMLÖ¸µÄÊÇÊý¾Ý²Ù×÷ÓïÑÔ£¬Ò²¾ÍÊÇͨ³£µÄinsert,updateºÍdelete²Ù×÷¡£Õâ¸ö´¥·¢Æ÷Ö÷ҪʵÏÖÔÚ¶ÔpubsÊý¾Ý¿âÖеÄauthor±í½øÐÐinsert,update,deleteʱ£¬»áÏÔʾÏàÓ¦µÄ²Ù×÷Ãû³Æ¡£
///
    /// °Ñinsert,update,delete²Ù×÷¶¼ÏÔʾ³öÀ´
    ///
    [Microsoft.SqlServer.Server.SqlTrigger(
        Name = "UF_DML_Trigger",
        Target = "dbo.authors",
        Event = "FOR INSERT, UPDATE, DELETE")]
    public static void UF_DML_Trigger()
    {
        switch (SqlContext.TriggerContext.TriggerAction)
        {
            case TriggerAction.Insert:
                SqlContext.Pipe.Send("Trigger Insert");
                break;
            case TriggerAction.Update:
                SqlContext.Pipe.Send("Trigger Update");
                break;
            case TriggerAction.Delete:
                SqlContext.Pipe.Send("Trigger Delete");
              


Ïà¹ØÎĵµ£º

·Àsql×¢ÈëÀà

 using System;
using System.Text.RegularExpressions;
using System.Web;
namespace FSqlKeyWord
{
/**//**//**//// <summary>
/// SqlKey µÄժҪ˵Ã÷¡£
/// </summary>
public class SqlKey
{
private HttpRequest request;
//private const string St ......

DBF±íÓëSQL Server±íµÄµ¼Èë¡¢µ¼³ö

 ----------Dbf µ¼Èë Sql Server±í----------
ÒÔϾùÒÔSQL2000¡¢VFP6¼°ÒÔÉϵıíΪÀý
´úÂëµ¼È룺²éѯ·ÖÎöÆ÷ÖÐÖ´ÐÐÈçÏÂÓï¾ä(ÏÈÑ¡Ôñ¶ÔÓ¦µÄÊý¾Ý¿â)
-------------Èç¹û½ÓÊܵ¼ÈëÊý¾ÝµÄSQL±íÒÑ´æÔÚ
--Èç¹û½ÓÊܵ¼ÈëÊý¾ÝµÄSQL±íÒѾ­´æÔÚ
Insert Into ÒѾ­´æÔÚµÄSQL±íÃû Select * from openrowset('MSDASQL','Driver=Micros ......

SQLÖÐobject_idº¯ÊýµÄÓ÷¨

 int object_id('objectname');
´Ë·½·¨·µ»ØÊý¾Ý¿â¶ÔÏó±êʶºÅ¡£
ÆäÖУ¬²ÎÊýobjectname ±íʾҪʹÓõĶÔÏ󣬯äÊý¾ÝÀàÐÍΪnchar»òchar£¨Èç¹ûΪchar£¬ÏµÍ³½«Æäת»»Îªnchar£©
·µ»ØÀàÐÍΪint£¬±íʾ¸Ã¶ÔÏóÔÚϵͳÖеıàºÅ¡£
±ÈÈ磺
use wf_timesheet
select object_id('usp_check_excess_hours')
·µ»ØÎª197575742¡£
´Ë· ......

SQLÓÅ»¯¹ý³ÌÖг£¼ûOracle HINTµÄÓ÷¨

 ÔÚSQLÓï¾äÓÅ»¯¹ý³ÌÖУ¬ÎÒÃǾ­³£»áÓõ½hint,ÏÖ×ܽáÒ»ÏÂÔÚSQLÓÅ»¯¹ý³ÌÖг£¼ûOracle HINTµÄÓ÷¨£º
1. /*+ALL_ROWS*/
±íÃ÷¶ÔÓï¾ä¿éÑ¡Ôñ»ùÓÚ¿ªÏúµÄÓÅ»¯·½·¨,²¢»ñµÃ×î¼ÑÍÌÍÂÁ¿,ʹ×ÊÔ´ÏûºÄ×îС»¯.
ÀýÈç:
SELECT /*+ALL+_ROWS*/ EMP_NO,EMP_NAM,DAT_IN from BSEMPMS WHERE EMP_NO='SCOTT';
2. /*+FIRST_ROWS*/
±í ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ