linq to sql ·ÖÒ³ µÄ¼¸ÖÖ·½·¨
1.Êý¾ÝµÄ·Ö²¼Skip()ºÍtake()
Skip(100)´ú±íÌø¹ý100Ðкó.´ÓµÚ101ÐпªÊ¼·ÖÒ³;
take(10)±íʾ¶àÉÙÐзÖÒ³;
Àý:
var result=from pdt in db.Product
select pdt;
this.dataview.DataSource=result.Skip(10).take(10);
this dataview.DataBind();
×¢:ÕâÖÖ·½Ê½Ò»´ÎÐÔ²éѯ³öÀ´ËùÓÐÊý¾Ý,È»ºóÔÙ·ÖÒ³;
2.ÏÂÃæµÄ·½Ê½ÊÇÿ¸öÌύʱ°ó¶¨µÄ¶¼ÊÇÌØ¶¨µÄÊý¾Ý,¶ø·ÇËùÓÐÊý¾Ý;
public overridevoid DataBind()
{
db.log=this.response.output;
var result=from pdt in db.product
select pdt;
int skipNumber=Int.parse(this.textbox1.text)*10;
this.dataview.DataSource=result.Skip(skipNumber).take(10);
this dataview.DataBind();
}
protected void NextButton_Click(Object sender,EventArgs e)
{
this textbox1.text=(int.parse(this.textbox1.text)+1).ToString);
this.DataBind();
}
protected void form_Load(Object send,EventArgs e)
{
if (!this.IsPostBack)
{
this.DataBind();
}
}
4¡¢
·Ñ»°²»¶à˵£¬Ö÷ÒªÊÇLinqÖеÄSkip¼°TakeÕâ¶þ¸öÀ©Õ¹·½·¨
int RecordCount = 0;
int PageCount = 1;
DataClassesDataContext data = new DataClassesDataContext();
int SkipIndex = 0;
private string _PageString = "";
public string PageString
{
get {
return _PageString;
}
set {
_PageString = value;
}
}
protected void Page_Load(object sender, EventArgs e)
{
RecordCount = data.Orders.Coun
Ïà¹ØÎĵµ£º
ºÜ¾Ã֮ǰ¾ÍÏëÒª°Ñ×Ô¼ºµÄ¶ÁÊé¹ý³Ì¼Ç¼ÏÂÀ´£¬½ñÌìÉÔ΢ÕûÀíÁËһϣ¬ÈÏΪ²»¹ÜʲôÊ飬×Ô¼ºÃ»ÔõôÍêÕûµØ¿´Í꣬¸ü±ðÌáÈÏÕæµØÈ«²¿µØ¿´ÍêÁË¡£ÌýÈË˵£¬ÒªÑ¡1±¾ºÃÊéÀ´¿´£¬ÎÒ²»·´¶ÔÕâÖÖ˵·¨£¬µ«¸üÖØÒªµÄÊÇ£¬²»½öÊÇÊé±¾Éí£¬¶øÊÇÎÒÃÇ×Ô¼ºµÄÇé¿ö£¬ÊDz»ÊÇÕæÕýͶÈë½øÈ¥¿´ÁË£¬²»¹ÜÔõÑù£¬Ð´ÊéµÄÈ˵Ä֪ʶ¿Ï¶¨±ÈÄãÕâ·½ÃæµÄ֪ʶҪ¶®ºÜ¶à£¬ ......
ÏÂÁÐÓï¾ä²¿·ÖÊÇMssqlÓï¾ä£¬²»¿ÉÒÔÔÚaccessÖÐʹÓá£
¡¡¡¡SQL·ÖÀࣺ
¡¡¡¡DDL—Êý¾Ý¶¨ÒåÓïÑÔ(CREATE£¬ALTER£¬DROP£¬DECLARE)
¡¡¡¡DML—Êý¾Ý²Ù×ÝÓïÑÔ(SELECT£¬DELETE£¬UPDATE£¬INSERT)
¡¡¡¡DCL—Êý¾Ý¿ØÖÆÓïÑÔ(GRANT£¬REVOKE£¬COMMIT£¬ROLLBACK)
¡¡¡¡Ê×ÏÈ,¼òÒª½éÉÜ»ù´¡Óï¾ä£º
¡¡¡¡1¡¢ËµÃ÷£º´´½¨Êý¾Ý¿â
......
SQL code
SQL ServerÊý¾Ýµ¼Èëµ¼³ö¹¤¾ßBCPÏê½â
BCPÊÇSQL ServerÖиºÔðµ¼Èëµ¼³öÊý¾ÝµÄÒ»¸öÃüÁîÐй¤¾ß£¬ËüÊÇ»ùÓÚDB
-
LibraryµÄ£¬²¢ÇÒÄÜÒÔ²¢Ðеķ½Ê½¸ßЧµØµ¼Èëµ¼³ö´óÅúÁ¿µÄÊý¾Ý¡£BCP¿ÉÒÔ½«Êý¾Ý¿âµÄ±í»òÊÓͼֱ½Óµ¼³ö£¬Ò²ÄÜͨ¹ýSELECT fromÓï¾ä¶Ô±í»òÊÓͼ½øÐйýÂ˺󵼳ö¡£ÔÚµ¼Èëµ¼³öÊý¾Ýʱ£¬¿ÉÒÔʹÓÃĬÈÏÖµ»òÊÇʹÓÃÒ»¸ö¸ ......
»Ö¸´Ä£Ê½£¨Recovery Model£©Ö¼ÔÚ¿ØÖÆÊÂÎñÈÕ־ά»¤¡£»Ö¸´Ä£Ê½ËµÃ÷Á˹¤×÷¶ªÊ§µÄ·çÏÕ£¬ÄÜ·ñ»Ö¸´µ½Ê±µã£¿
SQL ServerÊý¾Ý¿âÓÐÈýÖÖ»Ö¸´Ä£Ê½£º¼òµ¥»Ö¸´Ä£Ê½¡¢ÍêÕû»Ö¸´Ä£Ê½ºÍ´óÈÝÁ¿ÈÕÖ¾»Ö¸´Ä£Ê½¡£
Ïà¶ÔÓÚ¼òµ¥»Ö¸´Ä£Ê½¶øÑÔ£¬ÍêÕû»Ö¸´Ä£Ê½ºÍ´óÈÝÁ¿ÈÕÖ¾»Ö¸´Ä£Ê½ÌṩÁ˸üÇ¿µÄÊý¾Ý±£»¤¹¦ÄÜ¡£ÕâЩ»Ö¸´Ä£Ê½¶¼ÊÇ»ùÓÚ±¸·ÝÊÂÎñÈÕÖ ......