set adocon=Server.Createobject("adodb.connection")
adoconn.Open"Driver={Microsoft Access Driver(*.mdb)};DBQ="& _
Server.MapPath("数据库所在路径")
2.Access OLE DB连接方法:
set adocon=Server.Createobject("adodb.connection")
adocon.open"rovider=Microsoft.Jet.OLEDB.4.0;"& _
"Data Source=" & Server.MapPath("数据库所在路径")
3.SQL server连接方法:
set adocon=server.createobject("adodb.recordset")
adocon.Open"Driver={SQL Server};Server=(Local);UID=***WD=***;"& _
"database=数据库名;"
4.SQL server OLE DB连接方法:
set adocon=Server.Createobject("adodb.connection")
adocon.open"provider=SQLOLEDB.1;Data Source=RITANT4;"& _
"user ID=***assword=***;"& _
"inital Catalog=数据库名"
5.Oracle 连接方法:
set adocon=Server.Createobject("adodb.connection")
adocon.open"Driver={microsoft odbc for oracle};server=oraclesever.world;uid=admin;pwd=pass;"
6.Oracle OLE DB 连接方法:
set adocon=Server.Createobject("adodb.connection")
adocon.open"rovider=OraOLEDB.Oracle;data source=dbname;user id=admin;password=pass;"
7.dBase 连接方法:
set adocon=Server.Createobject("adodb.connection")
adocon.open"Driver={microsoft dbase driver(*.dbf)};driverid=277;dbq=------------;"
8.mySQL 连接方法:
set adocon=Server.Createobject("adodb.connection")
adocon.open"Driver={mysql};database=yourdatabase;uid=username;pwd=yourpassword;option=16386;"
9.Visual Foxpro 连接方法:
set adocon=Server.Createobject("adodb.connection")
adocon.open"Driver={microsoft Visual Foxpro driver};sourcetype=DBC;sourceDB=*.dbc;Exclusive=No;"
10.MS text 连接方法:
set adocon=Server.Createobject("adodb.connection")
adocon.open"Driver={microsoft text driver(*.txt; *.csv)};dbq=-----;"&_
"extensions=asc,csv,tab,txtersist SecurityInfo=false;"
11.MS text OLE DB 连接方法:
set adocon=Server.Createobject("adodb.connection")
adocon.open"rovider=microsof.jet.oledb.4.0;data source=your_path;"&_
"Extended Properties'text;FMT=Delimited'"
。常用的四种SQL命令:
1.查询数据记录(Select)
语法:Select 字段串行 From table Where 字段=内容
例子:想从book表中找出作者为"cancer"的所有记录,SQL语句便如下:
select * from book where author=’cancer’
"*"是取出book表所有的字段,如查询的字段值为数字,则其后的"内容"便无须加上单引号,
如是日期,则在Access中用(#)包括,而在SQL server中则用(’)包括,
如:
select * from book where id=1
select * from book where pub_date=#2002-1-7# (Access)
select * from book where pub_date=’2002-1-7’ (SQL Server)
strau=request.form("author")
strsql="select * from book where author=’"&strau&"’"
如果查询的是数字,则:
intID=request.form("id")
strsql="select * from book where id="&intID
在很多数据库中,如:oracle,上面的语句是可以写成:
strsql="select * from book where id='"&intID&"'"的。
但是字符型一定不能按照数字格式写,需要注意。
2.添加记录(Insert)
语法:Insert into table(field1,field2,....) Values (value1,value2,....)
例子:添加一作者是"cancer"的记录入book表:
insert into book (bookno,author,bookname) values (’CF001’,’cancer’,’Cancer无组件上传程序’)
同样,如果用到变量就如下:
strno=request.form("bookno")
strau=request.form("author")
strname=request.form("bookname")
strsql="insert into book (bookno,author,bookname) values (’"&strno&"’,’"&strau&"’,’"&strname&"’)"
4.修改数据记录(Update)
语法:update table set field1=value1,field2=value2,...where fieldx=valuex
例子:update book set author=’babycrazy’ where bookno=’CF001’
如果用到变量就如下:
strno=request.form("bookno")
strau=request.form("author")
strsql="update book set author=’"&strau&"’ where bookno=’"&strno"’"
5.Recordset对象的Update方法:
语法:
rs("field1").value=value1
rs("field2").value=value2
...
rs.update
注意:使用语法3和语法5的时候,一定要注意字段的类型(尤其是日期型)一致,否则出错的几率非常的高。
例子:
strno=request.form("bookno")
strau=request.form("author")
set adocon=server.createobject("adodb.connection")
adocon.open "Driver={Microsoft Access Driver(*.mdb)};DBQ=" & _
Server.Mappath=("/cancer/cancer.mdb")
strsql="select * from book where bookno=’"&strno&"’"
set rs=server.createobject("adodb.recordset")
rs.open strsql,adconn,1,3
if not rs.eof then ’如果有此记录的话
rs("author").value=strau
rs.update
end if
rs.close
set rs=nothing
adocon.close
set adocon=nothing
6.删除一条记录(Delete)
语法:Delete table where field=value
例子:删除book表中作者是cancer的记录