changing from access to MS SQL

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October 29th, 2003, 06:05 AM

gintom

Contributing User

Join Date: Sep 2003

Location: Essex, UK

Posts: 164

Time spent in forums: 17 h 16 m 46 sec
Reputation Power: 6

changing from access to MS SQL

At the moment I have an MS Access database and is getting full very quickly.

I want to upgrade to a MS SQL database provided by my hosting provider. My current site is written in ASP and SQL, I want to know would I have to allter any SQL or ASP coding to make it compatible with the MS SQL database instead of access.

This is an example of the coding that I am using at the moment to perform searches.

Code:

<%

' Open the Database Connection
SET Conn = Server.CreateObject("ADODB.Connection")
sConnection = "Provider=Microsoft.Jet.OLEDB.4.0;" & _
              "Data Source=" & Server.MapPath("\********.mdb") & ";" & _
              "Persist Security Info=False"
Conn.Open(sConnection)
%>

I know that I will need to change the connection to the database but that is all that I know what has to be changed.

Below is just a SQL sample that is used on my site. (I am using sessions below because the 2 pages before are secure credit card pages, so I have to write them to a session variables before going through the 3rd party servers).

Code:

<%sqlString1 = "INSERT INTO jobs " &_
  "( accountNo,jobtitle,category,jobtype,salary,benefits,location,jobdescription,companyname,companytype,  contact,email,phone,reference,method,VendorTxCode )" &_
  "VALUES( " &_
  "'" & Session("accountNo") & "'," & _
  "'" & Session("jobtitle") & "'," & _
  "'" & Session("category") & "'," & _
  "'" & Session("jobtype") & "'," & _
  "'" & Session("salary") & "'," & _
  "'" & Session("benefits") & "'," & _
  "'" & Session("location") & "'," & _
  "'" & Session("jobdescription") & "'," & _
  "'" & Session("companyname") & "'," & _
  "'" & Session("companytype") & "'," & _
  "'" & Session("contact") & "'," & _
  "'" & Session("email") & "'," & _
  "'" & Session("phone") & "'," & _
  "'" & Session("reference") & "'," & _
  "'" & Session("method") & "'," & _   
  "'" & VendorTxCode & "')" 
           
  Conn.Execute(sqlString1)
%>

Thanks in advance.

October 29th, 2003, 12:35 PM

r937

SQL Consultant

Join Date: Feb 2003

Location: Toronto Canada

Posts: 17,978

Time spent in forums: 1 Month 4 Weeks 18 h 3 m 38 sec
Reputation Power: 1028

there are plenty of sites out there that will describe the conversion procedure, and in fact i think you can even get a utility from microsoft to help convert the sql

there are a number of things that you will have to check for in your sql

IIF is replaced by CASE

FORMAT has no straight equivalent, use CONVERT to format dates

DATEADD, DATEDIFF, etc, have slightly different formats

dates are delimited by singlequotes, not octothorps, i.e. #2003-10-29# becomes '2003-10-29'

multi-table joins no longer need parentheses, but be careful of these, some may need to be re-written

saved queries, used in the FROM clause, can be rewritten as VIEWs, or better yet, derived tables

other than that, and i'm sure a few other tidbits i've forgotten, it's a fairly easy conversion

rudy
http://r937.com/

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