ASP common database connection and operation method and skill

1.ASP connect to an Access database

<%
dim conn,mdbfile
mdbfile=server.mappath("数据库名称.mdb")
set conn=server.createobject("adodb.connection")
conn.open "driver={microsoft access driver (*.mdb)};uid=admin;pwd=数据库密码;dbq="&mdbfile
%>

2. asp and SQL database connection:

<%
dim conn
set conn=server.createobject("ADODB.connection")
con.open "PROVIDER=SQLOLEDB;DATA SOURCE=SQL服务器名称或IP地址;UID=sa;PWD=数据库密码;DATABASE=数据库名称
%>

To set up a Recordset object:

Set rs=server.createobject("adodb.recordset")
rs.open SQL语句,conn,3,2

3. SQL Common Command use method:

(1) Data record filtering:

Sql= "SELECT * from data table where field name = field value order By field name"

Sql= "SELECT * from data table where field name like '% field value ' Order By field name '

Sql= "SELECT top * from data table where field name order By field name"

Sql= "SELECT * from data table where field name in (' Value 1 ', ' Value 2 ', ' Value 3 ')"

Sql= "SELECT * from data table where field name between value 1 and value 2"

(2) Update data records:

sql= "Update data table set field name = field value where Condition expression"

Sql= Update data Table set field 1= value 1, field 2= value 2 ... field n= value n Where Condition expression "

(3) Delete data records:

Sql= "Delete from data table where condition expression"

Sql= "Delete from data table" (delete all records from datasheet)

(4) Adding data records:

sql= INSERT into Data table (field 1, Field 2, Field 3 ...) valuess (value 1, value 2, value 3 ...)

Sql= INSERT INTO Target datasheet SELECT * from source datasheet (add a record from the source datasheet to the destination datasheet)