.netÁ¬½ÓÊý¾Ý¿â£¬Ö´ÐÐsql½Å±¾
1¡¢¶¨ÒåÖ¸Á£ºusing System.Data.SqlClient;
2¡¢¶¨ÒåsqlÁ¬½Ó£º SqlConnection conn= new SqlConnection("server=(local);database=colorring;uid=sa;pwd=;");
3¡¢´ò¿ªsqlÁ¬½Ó£º conn.Open();
4¡¢¶¨ÒåsqlÓï¾ä£ºstring sqlstr = "insert into test values (123321)";
5¡¢×é×°sqlÓï¾äºÍÁ¬½Ó£ºSqlCommand cmd = new SqlCommand(sqlstr,conn);
6¡¢Ö´ÐÐsqlÃüÁint result=cmd.ExecuteNonQuery();
7¡¢¹Ø±ÕsqlÁ¬½Ó£ºconn.Close();
8¡¢ÏÔʾ¸üеÄÊýÁ¿£º Label1.Text =Convert.ToString(result);
´úÂëÈçÏ£º
using System.Data.SqlClient;
SqlConnection conn= new SqlConnection("server=(local);database=colorring;uid=sa;pwd=;");
conn.Open();
string sqlstr = "insert into test values (123321)";
SqlCommand cmd = new SqlCommand(sqlstr,conn);
int result=cmd.ExecuteNonQuery();
conn.Close();
Label1.Text =Convert.ToString(result);
Ïà¹ØÎĵµ£º
ÎÒÃÇÔÚ¿ª·¢¹ý³ÌÖУ¬¾³£Óöµ½ÕâÑùÎÊÌ⣬¾ÍÊÇÒªÇó¶¨ÆÚ½øÐÐÊý¾Ý¿âµÄ¼ì²é£¬Èç¹û·¢ÏÖÌØ¶¨Êý¾Ý£¬ÄÇô¾ÍÒª½øÐÐijÏî²Ù×÷£¬Õâ¸öÐèÇóÄØ£¬¿ÉÒÔÀûÓÃWindowsµÄ¼Æ»®ÈÎÎñ£¬¶¨ÆÚÖ´ÐÐijһ¸öÓ¦ÓóÌÐò£¬È¥¼ìË÷Êý¾Ý£»Ò²¿ÉÒÔÈóÌÐò×Ô¼º¿ØÖÆ¡£ÆäʵSQL Server×Ô¼ºÒ²¿ÉÒÔ´´½¨¼Æ»®ÈÎÎñ£¬¶¨ÆÚ½øÐÐÖ´ÐС£Èç¹ûÊý¾Ý¿â·þÎñÆ÷ÔÊÐí£¬¿ÉÒÔ¿¼ÂDzÉÓÃÕâÖÖ·½Ê½¡£
......
1¡¢ÎļþºÍÎļþ×éµÄº¬ÒåÓë¹ØÏµ
ÿ¸öÊý¾Ý¿âÓÐÒ»¸öÖ÷Êý¾ÝÎļþ.ºÍÈô¸É¸ö´ÓÎļþ¡£ÎļþÊÇÊý¾Ý¿âµÄÎïÀíÌåÏÖ¡£ Îļþ×é¿ÉÒÔ°üÀ¨·Ö²¼ÔÚ¶à¸öÂß¼·ÖÇøµÄÎļþ£¬ÊµÏÖ¸ºÔØÆ½ºâ¡£Îļþ×éÔÊÐí¶ÔÎļþ½øÐзÖ×飬ÒÔ±ãÓÚ¹ÜÀíºÍÊý¾ÝµÄ·ÖÅ䣯·ÅÖá£ÀýÈ磬¿ÉÒÔ·Ö±ðÔÚÈý¸öÓ²ÅÌÇý¶¯Æ÷ÉÏ´´½¨Èý¸öÎļþ£¨Data1.ndf¡¢Data2.ndf ºÍ Data3.ndf£©£¬²¢½«ÕâÈý¸ ......
ÔÚÊý¾Ý¿âÖÐÓÐÒ»Õűímytable£¬Êý¾Ý¼Ç¼7000ÍòÌõ£¬ÓÐÈçÏÂÁ½ÌõSQLÓï¾ä
1.
select top 100 * from mytable order by operateDate
2.
select * from (select top 100 * from mytable ) a order by a.operateDate
Æð³õÎÒʹÓõÚÒ»ÌõÓï¾ä²éѯÊý¾Ý£¬²¢Ï£Íû½«µÃµ½µÄ ......
(1) Ñ¡Ôñ×îÓÐЧÂʵıíÃû˳Ðò
(
Ö»ÔÚ»ùÓÚ¹æÔòµÄÓÅ»¯Æ÷ÖÐÓÐЧ
)
£º
ORACLE µÄ½âÎöÆ÷°´ÕÕ´ÓÓÒµ½×óµÄ˳Ðò´¦Àí
from
×Ó¾ä
ÖеıíÃû£¬
from
×Ó¾äÖÐдÔÚ×îºóµÄ±í
(
»ù´¡±í
driving table)
½«±»×îÏÈ´¦Àí£¬ÔÚ
from
×Ó¾äÖаüº¬¶à¸ö±íµÄÇé¿öÏÂ
,
Äã±ØÐëÑ¡
Ôñ¼Ç¼ÌõÊý×îÉٵıí×÷Ϊ»ù´¡±í ......