Nodejs and Sql server from linux - linux

Question

I'm trying to connect from ubuntu (kubuntu 13.04) with nodejs to a sql server db! (sql server 2012)
I was looking at node odbc..
so.. I start installing FreeTds, then unixOdbc, then launch: npm install odbc
1) I configured the file "etc/freetds/freetds.conf" like this:
[FreeTDS]
host = gerry_win7
port = 1433
tds_version = 8.0
client charset = UTF-8
2) install sqsh (sudo apt-get install sqsh) and try to connect with
sqsh -S FreeTDS -U trm1 -P user
and execute a query: works perfectly!
3) then, I tried to configure ODBC access in this way:
file "/etc/odbcinst.ini":
[FreeTDS]
Description = TDS driver
Driver = /usr/lib/i386-linux-gnu/odbc/libtdsodbc.so
Setup = /usr/lib/i386-linux-gnu/odbc/libtdsS.so
CPTimeout =
CPReuse =
FileUsage = 1
file "/etc/odbc.ini":
[FreeTDS]
Driver = FreeTDS
Description = ODBC connectin via FreeTDS
Trace = No
Servername = gerry_win7
Database = testsql
UID = trm1
PWD = user
Port = 1433
4) with this sample code with nodejs I received the following error:
code:
var cn = 'DRIVER={FreeTDS};SERVER=gerry_win7;UID=trm1;PWD=user;DATABASE=testsql';
var Database = require('odbc').Database, db = new Database();
db.open(cn, function(err){
if (err) {return console.log(err);}
});
error:
[unixODBC][FreeTDS][SQL Server]Unable to connect to data source
[Error: Error opening database]
but, as I wrote before, with the "sqsh" client the connection works: I can run queries!
can someone help me understand what I'm doing wrong?

Answer 1

This is the connection string I would use if I were specifying the DRIVER in it:
"DRIVER={FreeTDS};SERVERNAME=gerry_win7;DATABASE=testsql;UID=trm1;PWD=user;AutoTranslate=yes"
If you want to use the DSN that you have configured in /etc/odbc.ini then you would want to do:
"DSN=FreeTDS;UID=trm1;PWD=user;DATABASE=testsql"
Testing with the sqsh command may just use the configuration information that is in /etc/freetds/freetds.conf (citation needed). It is best to test your ODBC configuration (outside of node) with the isql command like:
$ isql FreeTDS trm1 user
Where FreeTDS is the DSN configured in /etc/odbc.ini.
Your configuration may be a little bit confusing because both the driver name and the DSN name are FreeTDS. I personally find it more helpful to use the server name or some other identifier as the DSN name specified in /etc/odbc.ini. I would suggest something like this in your odbc.ini:
[gerry]
Driver = FreeTDS
Description = ODBC connectin via FreeTDS
Trace = No
Servername = gerry_win7
Database = testsql
UID = trm1
PWD = user
Port = 1433
Then use this connection string:
"DSN=gerry;UID=trm1;PWD=user;DATABASE=testsql"
Doing it that way, you could potentially just change the Driver entry in the odbc.ini file if you want to use the SQL Server Native Client 11.0, if you get to that point. :)