When I use the following connection strings, the first one is working and the second is not working on my system. May I know the difference between these two connections strings?
DSN=ABCD;DATABASE=db1;UID=userid;PWD=passwd
and the second one
Data Source=ABCD;DATABASE=db1;UID=userid;PWD=passwd
Error thrown by second string
[unixODBC][Driver Manager]Data source name not found, and no default driver specified (0) (SQLDriverConnect)
I am new to using SQL Server, so confused the difference between DSN and Data Source
There can be many reasons as to why your second connection string is not working. You need to check Why do I get error "Data source name not found and no default driver specified"?
The ODBC Driver Manager relies on the Driver attribute to know which
ODBC driver to load.
Data source (in Data Source=ABCD) is not a valid connection keyword. See the connection properties here.
In the first connection string DSN is an odbc DataSource name. If it works it means you have one configured.
In the second one Data Source is the sever name not the DSN.
For additional reference :
DSN connection strings
SQL Server connection string
Related
I'm trying to connect to the SQL Sever database using R but not sure on the details for the query string. I normally use SQL server management studio on SQL Server 2008 and connnect using single sign on. I found the below example
myconn <- odbcDriverConnect(connection="Driver={SQL Server
Native Client 11.0};server=hostname;database=TPCH;
trusted_connection=yes;")
I get the below warning message
Warning messages:
1: In odbcDriverConnect(connection = "Driver={SQL Server \nNative Client 11.0};server=hostname;database=TPCH;\ntrusted_connection=yes;") :
[RODBC] ERROR: state IM002, code 0, message [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified
2: In odbcDriverConnect(connection = "Driver={SQL Server \nNative Client 11.0};server=hostname;database=TPCH;\ntrusted_connection=yes;") :
ODBC connection failed
How do I go about finding the specifics i need?
I have done this in the past with an odbc named connection that I've already had in place. In case you don't know, you can create one in windows by typing into the search prompt 'odbc' and selecting "set up data sources". For example - if you named an odbc connection 'con1' you can connect the following way:
con<-odbcConnect('con1') #opening odbc connection
df<-sqlQuery(con, "select *
from ssiD.dbo.HOURLY_SALES
") #querying table
close(con)
This works for me.
library(RODBC)
dbconnection <- odbcDriverConnect("Driver=ODBC Driver 11 for SQL Server;Server=server_name; Database=table_name;Uid=; Pwd=; trusted_connection=yes")
initdata <- sqlQuery(dbconnection,paste("select * from MyTable;"))
odbcClose(channel)
Also, see these links.
RODBC odbcDriverConnect() Connection Error
https://www.simple-talk.com/sql/reporting-services/making-data-analytics-simpler-sql-server-and-r/
The problem is simpler than this. The big clue is the \n in the error message. Something has re-flowed your connection string such that there is now a new-line character in the driver name. That won't match any registered driver name. Pain and suffering then ensues. Make sure your whole connection string is on a single line!
I often use:
driver={SQL Server Native Client 11.0}; ...
and it works really well. Much better than having to rely on pre-defined connection names.
Try another ODBC driver.
In windows press the "windows" button and then type "odbc".
Click the "Data sources (ODBC)" link.
Go to the "Drivers" tab to see the available drivers for SQL Server.
Also - remove the " " spaces after the semicolons in your connection string.
Note - the database property should point to a database name rather than a table name.
This worked for me:
odbcDriverConnect("Driver=SQL Server Native Client 11.0;Server=<IP of server>;Database=<Database Name>;Uid=<SQL username>;Pwd=<SQL password>")
First, you need to install the package 'RSQLServer', and all its dependencies.
Then execute the following command in RStudio, with relevant parameters:
conn <- DBI::dbConnect(RSQLServer::SQLServer(),
server = '<server>',
port = '<port>',
properties = list(
user = '<user>',
password = '<password>'
))
Finally, db_list_tables(conn) gives you the list of tables in the corresponding database.
i need to connect to SQL server from node so i need connection string.
How to define connection strings in SQL server 2012 ? or what are the ones by default ?
I'm not sure whether I get your question right...
Server=myServerAddress;Database=myDataBase;User Id=myUsername;Password=myPassword;
Is that what you are looking for?
The server/instance name syntax used in the server option is the same
for all SQL Server connection strings.
Server=myServerName\myInstanceName;Database=myDataBase;User Id=myUsername;
Password=myPassword;
You can create a new universal data link file (.udl) on your computer and double click the file in order to select provider and enter connection data. This way, you can test the connection and modify the settings accordingly.
Create a new file a.txt for instance, and rename this file to a.udl
Then follow the steps below to configure connection
Double-click the universal data link (.udl) file. The Data Link Properties dialog box opens, displaying the following tabs: Provider,
Connection, Advanced, and All. Choose Next to navigate from tab to
tab.
On the Provider tab, select a database provider.
On the Connection tab, either select the data source name (DSN) of an available Provider, or enter a custom connection string. Valid DSNs
for providers that are pre-defined on your system are displayed in the
Use Data Source drop-down list.
Use the Advanced tab to view and set other initialization properties for your data.
5.Use the All tab to review and edit all OLE DB initialization properties available for your OLE DB provider.
Choose OK to save the connection string to the Universal Data Link (.udl) file.
Then open up the file with a text editor to access the connection string stored.
I want to connect to a SQL Server database without using DSN. I'm receiving an error when trying to connect to said database. The error is
Run-time error '-2147467259 (80004005)': [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified
My connection string looks like this:
"ODBC;DRIVER=SQL Server;SERVER=lokdb; UID=secret;PWD=secret;APP=Microsoft Open Database Connectivity;WSID=" & Environ$("COMPUTERNAME") & ";Network=DBMSSOCN;Trusted_Connection=Yes;DATABASE=EDMS-Lok"`
I am able to connect to the default database on the server with the credentials specified if I remove the DATABASE=EDMS-Lok parameter from the connection string, however I don't then seem to be able to "find" the EDMS-Lok database. E.g. if I try using
SELECT * FROM EDMS-Lok.dbo.eng_dwg
I get an error message
Run-Time error '-2147217900 (80040e14)': [Microsoft][ODBC SQL Server Driver][SQL Server]Incorrect syntax near '-'
(eng_dwg is a valid table)
When I connect without specifying a database, the .DefaultDatabase property of the ADO connection object returns "020" which I don't even see as an available database on that server??
When connected, if I use SELECT name FROM sys.databases I'm able to get a list of the databases available. They are:
010
100
500
EDMS-Lok
Master
msdb
MSLLockDB
pubs
tempdb
I got it working using DSN, but I don't want to use DSN.
Not sure what is wrong here??
I would say the problem is that you mix up the authentication models. You provide user + password but also you have configured trusted connection = yes. I'm not sure how ADO works in that case but I would assume that it doesn't use the configured user and connects with the windows account. Delete the trusted connection parameter in the connection string and try again.
OK, credit for this answer should go to Dee and Sam who commented on the original question, however I can't mark a comment as the answer, so here it is:
Needed to wrap the database name in square brackets [ ] ... like this DATABASE=[EDMS-Lok] - (credit to DEE)
I first tried wrapping the database name in the connection string i.e. DATABASE=[EDMS-Lok] and this did not work (same error). However, if I connect without specifying the database, I'm able to access the table using SELECT * FROM [EDMS-Lok].dbo.eng_dwg
It didn't work in the connection string because the string is not T-SQL code. To get it to work, you may need to figure out how to escape the dash character. – (credit to SAM)
I've tried single and double quotes, backslash, square brackets, parentheses and curly brackets and nothing seems to work to escape the hyphen in the database name within the connection string. But, since I can now access the database and the tables I need, which was the original question, I wanted to mark it as answered.
I'm new to SqlServer, right now I have SqlLocalDb installed to work locally. Good, but I can see two connection strings typically and both works:
Data Source=(localdb)\v11.0;Integrated Security=true;
and
Server=(localdb)\v11.0;Integrated Security=true;
What exact difference is there between the two?
For the full list of all of the connection string keywords, including those that are entirely synonymous, please refer to the SqlConnection.ConnectionString documentation:
These are all entirely equivalent:
Data Source
Server
Address
Addr
Network Address
... There is no difference between Server and Data Source as they represent the same thing for SQL Server : the full name of the SQL Server instance with the syntax "MyComputerName\MyShortInstanceName" , potentially including the port used by the SQL Server instance to communicate.
Reference: http://social.msdn.microsoft.com/Forums/en/sqldataaccess/thread/7e3cd9b2-4eed-4103-a07a-5ca2cd33bd21
They are synonymous - you can use either one.
That is - as far as the framework is concerned, they are the same.
My favorite set up is one that doesn't contain any spaces. In the simplest form, one has to provide four values - the URL, the container, the user and the credential.
server
database
user (or uid)
password (or pwd)
So a connection string looks like this.
server=stuffy.databases.net;database=stuffy;user=konrad;password=Abc123(.)(.);
I'm trying to build a connection string for a test environment that will connect to the local SQL Server instance on different machines. The purpose of this is so that a developer can checkout the code from TFS, build it, and run the testcases, connecting to his local DB. The problem is that different developer's machines may have different SQL Server setups. In particular, some may be running the full server, others may be running SQL Server Express.
I'm trying to right a utility routine that will take template connection string (e.g., Data Source=(local); Initial Catalog= myDB; Integrated Security=SSPI;) and modify the Data Source to work with the local server.
I've tried using SmoApplication.EnumAvailableServers() (returns an empty table, regardless of whether I user true or false parameters), and SqlDataSourceEnumerator.GetDataSources() (returns 2888 servers from the network, but none on the local machine), SQLCMD -L (returns nothing).
Any suggestions?
In the alternative, is there an easy way to tell whether a particular connection string will connect to a server (without waiting for it to timeout if it doesn't). If I could find the answer to that, I could try the likely suspects until I got one to work.
you might try to get the connection string as following:
Create a new blank file and name it test.udl.
Double click on it, and a "Data Link Properties" dialog should appear.
On "Providers" tab, select "Microsoft OLE DB Provider for SQL Server" or "SQL Native Client"
On "Connections" tab, try various settings and use the "Test Connection" button to test them. Click "Ok" when it works.
Open the test.udl file in Notepad and copy the line that starts with "Provider=" into your Web.config "ConnectionString" value, BUT delete the little part that says "Provider=SQLNCLI.1;"
If you want each developer to work with their own local SQL server, then the ADO connection string should have the Data Source set to localhost
... ; Data Source=localhost; ...
Additionally, to get a list of current servers, go to the command line and run
osql -L
You can look in the registry to find all local SQL Server instances. This key contains the list: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server\Instance Names\SQL.
Each named instance will have a value in this key. For named instances the name of the value is the same as the name of the instance. For the default instance the value will be named MSSQLSERVER.
This will do the trick:
Data Source=.\SQLEXPRESS