SSIS Expression to Server Name from a Connection String

Question

Hi,
I have an SSIS variable which contains a connection string as follows; -
User::strD​YNconnecti​on {Data Source=myServer;Init​ial Catalog=myDatabase;Provider​=SQLNCLI10​.1;Integra​ted Security=XXXX} String
I need to get the server name from the above variable using an SSIS expression so I can pass the server name to another function.
Thanks in advance,
Kieran.
Kieran Patrick Wood http://www.innovativebusinessintelligence.com http://uk.linkedin.com/in/kieranpatrickwood http://kieranwood.wordpress.com/

Answer 1

Hi Kieran,
This works fine when the Data source comes first in the connection string (which it usualy does). but when it doesn't,
e.g.
Init​ial Catalog=myDatabase;Data Source=myServer;Provider​=SQLNCLI10​.1;Integra​ted Security=XXXX}
you will get 'myDatabase' as an answer
I would add 'Data source =' in the find string (and adjust for length of this search string to add sufficient offset)
e.g.
SUBSTRING(RIGHT(@[User::strDYNconnection],LEN(@[User::strDYNconnection]) - 11 - FINDSTRING(@[User::strDYNconnection],"Data Source=",1)),1,FINDSTRING((RIGHT(@[User::strDYNconnection],LEN(@[User::strDYNconnection]) - 11 - FINDSTRING(@[User::strDYNconnection],"Data
Source=",1))),";",1) - 1)
Even this is not foolproof, when the Data source is the last element in the string and there is no ending ;
e.g.
Init​ial Catalog=myDatabase;Provider​=SQLNCLI10​.1;Integra​ted Security=XXXX;Data Source=myServer}
the formula needs to be extended further with a ( ? : ) operator around the last operator to see if the last ";" was found or not.
Jan D'Hondt - SQL server BI development