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

C#Á¬½ÓACESSʱ£¬sqlÓï¾äÓдí

ÔÚдsqlÓï¾äʱ£¬Ò»°ã¶¼ÊÇÒ»¾ä½â¾ö£¬´ÓÀ´Ã»Ïë¹ý˵£¬°ÑsqlÓï¾ä²ð¿ªÀ´Ð´¡£
ÀýÈçÏÂÃæÕâ¾ä£º  string readstring = "select * from ʵÀý where ʵÀýID='"+eid+"'";
È»ºóÖ´ÐÐ Myconnection();
        DataSet ds = new DataSet();
        OleDbDataAdapter da = new OleDbDataAdapter(readstring, Mycon);
Õâʱºò¾Í»á±¨´í¡£¡£²»ÊÇ˵“sqlÓï¾äÓд픣¬¾ÍÊÇ“Êý¾ÝÀàÐͲ»Æ¥Å䔣¬¸üÂé·³µÄÊÇ£¬ÔËÐгɹ¦ÁË£¬µ«ÊÇÔËÐеĽá¹ûÒ»Ö±ÓÐ´í¡£¡£
ºóÀ´£¬²Å·¢ÏÖÔ­À´Èç¹ûÁ¬½ÓµÄÊÇacessµÄ»°£¬ÒÔÉϵÄÕâ¾äsqlÊÇÒª±ä³ÉÏÂÃæÕâÑùдµÄ£º
 string readstr = "select * from ʵÀý where ʵÀýID=";
 string readstring = readstr + eid;
ÏñÏÂÃæÕâÑùµÄ´úÂ룬²ÅÄÜÔËÐÐÎÞÎó£º
      int eid = Form1.int_selected + 1;
        string readstr = "select * from ʵÀý where ʵÀýID=";
        string readstring = readstr + eid;
        Myconnection();//Á¬½ÓÊý¾Ý¿â
        DataSet ds = new DataSet();
        OleDbDataAdapter da = new OleDbDataAdapter(readstring, Mycon);
        da.Fill(ds, "ʵÀý");
         qbox1.Text = ds.Tables[0].Rows[0][3].ToString();
        dxbox1.Text = ds.Tables[0].Rows[0][4].ToString();


Ïà¹ØÎĵµ£º

Sql Server»ù±¾º¯Êý

1.×Ö·û´®º¯Êý
³¤¶ÈÓë·ÖÎöÓÃ
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´óд
lower(char_expr) תΪСд
space(int_expr) Éú³Éint_expr¸ö¿Õ¸ñ ......

¼òµ¥µ«ÓÐÓõÄSQL½Å±¾

ÐÐÁÐת»»
create table test(id int,name varchar(20),quarter int,profile int)
insert into test values(1,'a',1,1000)
insert into test values(1,'a',2,2000)
insert into test values(1,'a',3,4000)
insert into test values(1,'a',4,5000)
insert into test values(2,'b',1,3000)
insert into test values(2, ......

SQL²åÈëÀýÌâ

--´´½¨±íTongXunLu
CREATE TABLE TongXunLu
 (
 [tName] nvarchar(30),
 [tAddress] nvarchar(50),
 [tEmail] varchar(50)
 )
--´´½¨±í students
CREATE TABLE students
 (
 [sId] int IDENTITY (1, 1) primary key NOT NULL ,
 [sName] varchar (50)   NOT ......

[¼Ç¼]ÔÚÃüÁîÐÐÖÐÆô¶¯ SQL SERVER

Æô¶¯ MS SQL SERVER £¨2000 £­2008¶¼ÊÊÓã©£º
cmd>net start mssqlserver
Æô¶¯ ·ÇȱʡʵÀý£º
cmd>net start mssql$[instance name]
×¢£ºÃüÁîÐÐÐèÒªÓÐAdministratorȨÏÞ¡£
Í£Ö¹SQLSERVER ·þÎñÆ÷:
cmd>net stop mssqlserver
cmd>net stop mssql$[instance name] ......

sql³õ¼¶Óï·¨ ±Ê¼Ç×ܽá

num_field   number(12,2); 
±íʾnum_fieldÊÇÒ»¸öÕûÊý²¿·Ö×î¶à10λ¡¢Ð¡Êý²¿·Ö×î¶à2λµÄ±äÁ¿¡£ 
case.....when Ó÷¨£¨Óëdecode£¨£©×÷ÓúÜÏñ£©
select case zsxm_dm
         when '02' then
          'Ó ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ