Question

I’m currently using SMO and C# to traverse databases to create a tree of settings representing various aspects of the two databases, then comparing these trees to see where and how they are different.

The problem is, for 2 reasonably sized database, it takes almost 10mins to crawl them locally and collect table/column/stored procedure information I wish to compare.

Is there a better interface then SMO to access databases in such a fashion? I would like to not include any additional dependencies, but I’ll take that pain for a 50% speed improvement. Below is a sample of how I’m enumerating tables and columns.

        Microsoft.SqlServer.Management.Smo.Database db = db_in;         foreach (Table t in db.Tables)         {             if (t.IsSystemObject == false)             {                  foreach (Column c in t.Columns)                 {                 }                                 }         } 

Answer 1

Try to force SMO to read all the required fields at once, instead of querying on access. See this blog for more information

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EDIT: Link is dead but I found the page on archive.org. Here’s the relevant code:

Server server = new Server();  // Force IsSystemObject to be returned by default. server.SetDefaultInitFields(typeof(StoredProcedure), 'IsSystemObject');  StoredProcedureCollection storedProcedures = server.Databases['AdventureWorks'].StoredProcedures;  foreach (StoredProcedure sp in storedProcedures) {     if (!sp.IsSystemObject) {         // We only want user stored procedures     } }