toddmeng-db commented on code in PR #2896:
URL: https://github.com/apache/arrow-adbc/pull/2896#discussion_r2121691710


##########
csharp/src/Drivers/Databricks/DatabricksStatement.cs:
##########
@@ -41,6 +41,19 @@ internal class DatabricksStatement : SparkStatement, 
IHiveServer2Statement
         public DatabricksStatement(DatabricksConnection connection)
             : base(connection)
         {
+            // set the catalog name for legacy compatibility
+            // TODO: use catalog and schema fields in hiveserver2 connection 
instad of DefaultNamespace so we don't need to cast
+            var defaultNamespace = 
((DatabricksConnection)Connection).DefaultNamespace;
+            if (defaultNamespace != null) {
+                if (CatalogName == null)
+                {
+                    CatalogName = defaultNamespace.CatalogName;
+                }
+                if (SchemaName == null)
+                {
+                    SchemaName = defaultNamespace.SchemaName;

Review Comment:
   Using ODBC, I see if I set a default catalog and default schema in 
connection string, subsequent GetTables still only uses default catalog (unless 
schema is provided explicitly). Does that make sense



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