diff --git a/src/SqlAsyncCollector.cs b/src/SqlAsyncCollector.cs
index c14f2ce03..38de5963a 100644
--- a/src/SqlAsyncCollector.cs
+++ b/src/SqlAsyncCollector.cs
@@ -236,6 +236,7 @@ private async Task UpsertRowsAsync(IEnumerable<T> rows, SqlAttribute attribute,
                         batchCount++;
                         GenerateDataQueryForMerge(tableInfo, batch, out string newDataQuery, out string rowData);
                         command.CommandText = $"{newDataQuery} {tableInfo.Query};";
+                        this._logger.LogDebugWithThreadId($"UpsertRowsTransactionBatch - Query={command.CommandText}");
                         par.Value = rowData;
                         await command.ExecuteNonQueryAsync();
                     }
@@ -265,7 +266,7 @@ private async Task UpsertRowsAsync(IEnumerable<T> rows, SqlAttribute attribute,
                         string message2 = $"Encountered exception during upsert and rollback.";
                         throw new AggregateException(message2, new List<Exception> { ex, ex2 });
                     }
-                    throw;
+                    throw new InvalidOperationException($"Unexpected error upserting rows", ex);
                 }
             }
         }
@@ -396,7 +397,6 @@ public class TableInformation
             public StringComparer Comparer { get; }
 
             /// <summary>
-            /// T-SQL merge statement generated from primary keys
             /// T-SQL merge or insert statement generated from primary keys
             /// and column names for a specific table.
             /// </summary>
@@ -540,9 +540,9 @@ WHEN NOT MATCHED THEN
             /// <param name="sqlConnection">An open connection with which to query SQL against</param>
             /// <param name="fullName">Full name of table, including schema (if exists).</param>
             /// <param name="logger">ILogger used to log any errors or warnings.</param>
-            /// <param name="columnNames">Column names from the object</param>
+            /// <param name="objectColumnNames">Column names from the object</param>
             /// <returns>TableInformation object containing primary keys, column types, etc.</returns>
-            public static async Task<TableInformation> RetrieveTableInformationAsync(SqlConnection sqlConnection, string fullName, ILogger logger, IEnumerable<string> columnNames)
+            public static async Task<TableInformation> RetrieveTableInformationAsync(SqlConnection sqlConnection, string fullName, ILogger logger, IEnumerable<string> objectColumnNames)
             {
                 Dictionary<TelemetryPropertyName, string> sqlConnProps = sqlConnection.AsConnectionProps();
                 TelemetryInstance.TrackEvent(TelemetryEventName.GetTableInfoStart, sqlConnProps);
@@ -560,13 +560,15 @@ public static async Task<TableInformation> RetrieveTableInformationAsync(SqlConn
                     var cmdCollation = new SqlCommand(getDatabaseCollationQuery, sqlConnection);
                     using (SqlDataReader rdr = await cmdCollation.ExecuteReaderAsync())
                     {
+                        string collation = "";
                         while (await rdr.ReadAsync())
                         {
-                            caseSensitive = GetCaseSensitivityFromCollation(rdr[Collation].ToString());
+                            collation = rdr[Collation].ToString();
+                            caseSensitive = GetCaseSensitivityFromCollation(collation);
                         }
                         caseSensitiveSw.Stop();
                         TelemetryInstance.TrackDuration(TelemetryEventName.GetCaseSensitivity, caseSensitiveSw.ElapsedMilliseconds, sqlConnProps);
-                        logger.LogDebugWithThreadId($"END GetCaseSensitivity Duration={caseSensitiveSw.ElapsedMilliseconds}ms");
+                        logger.LogDebugWithThreadId($"END GetCaseSensitivity Collation={collation} CaseSensitive={caseSensitive} Duration={caseSensitiveSw.ElapsedMilliseconds}ms");
                     }
                 }
                 catch (Exception ex)
@@ -656,7 +658,7 @@ public static async Task<TableInformation> RetrieveTableInformationAsync(SqlConn
                 // Match SQL Primary Key column names to POCO property objects. Ensure none are missing.
                 StringComparison comparison = caseSensitive ? StringComparison.Ordinal : StringComparison.OrdinalIgnoreCase;
                 IEnumerable<PropertyInfo> primaryKeyProperties = typeof(T).GetProperties().Where(f => primaryKeys.Any(k => string.Equals(k.Name, f.Name, comparison)));
-                IEnumerable<string> primaryKeysFromObject = columnNames.Where(f => primaryKeys.Any(k => string.Equals(k.Name, f, comparison)));
+                IEnumerable<string> primaryKeysFromObject = objectColumnNames.Where(f => primaryKeys.Any(k => string.Equals(k.Name, f, comparison)));
                 IEnumerable<PrimaryKey> missingPrimaryKeysFromItem = primaryKeys
                     .Where(k => !primaryKeysFromObject.Contains(k.Name, comparer));
                 bool hasIdentityColumnPrimaryKeys = primaryKeys.Any(k => k.IsIdentity);
@@ -674,7 +676,8 @@ public static async Task<TableInformation> RetrieveTableInformationAsync(SqlConn
                 // If any identity columns or columns with default values aren't included in the object then we have to generate a basic insert since the merge statement expects all primary key
                 // columns to exist. (the merge statement can handle nullable columns though if those exist)
                 bool usingInsertQuery = (hasIdentityColumnPrimaryKeys || hasDefaultColumnPrimaryKeys) && missingPrimaryKeysFromItem.Any();
-                IEnumerable<string> bracketedColumnNamesFromItem = columnNames
+
+                IEnumerable<string> bracketedColumnNamesFromItem = objectColumnNames
                     .Where(prop => !primaryKeys.Any(k => k.IsIdentity && string.Equals(k.Name, prop, comparison))) // Skip any identity columns, those should never be updated
                     .Select(prop => prop.AsBracketQuotedString());
                 string query = usingInsertQuery ? GetInsertQuery(table, bracketedColumnNamesFromItem) : GetMergeQuery(primaryKeys, table, bracketedColumnNamesFromItem);
@@ -689,7 +692,7 @@ public static async Task<TableInformation> RetrieveTableInformationAsync(SqlConn
                 sqlConnProps.Add(TelemetryPropertyName.QueryType, usingInsertQuery ? "insert" : "merge");
                 sqlConnProps.Add(TelemetryPropertyName.HasIdentityColumn, hasIdentityColumnPrimaryKeys.ToString());
                 TelemetryInstance.TrackDuration(TelemetryEventName.GetTableInfoEnd, tableInfoSw.ElapsedMilliseconds, sqlConnProps, durations);
-                logger.LogDebugWithThreadId($"END RetrieveTableInformationAsync Duration={tableInfoSw.ElapsedMilliseconds}ms DB and Table: {sqlConnection.Database}.{fullName}. Primary keys: [{string.Join(",", primaryKeys.Select(pk => pk.Name))}]. SQL Column and Definitions:  [{string.Join(",", columnDefinitionsFromSQL)}]");
+                logger.LogDebugWithThreadId($"END RetrieveTableInformationAsync Duration={tableInfoSw.ElapsedMilliseconds}ms DB and Table: {sqlConnection.Database}.{fullName}. Primary keys: [{string.Join(",", primaryKeys.Select(pk => pk.Name))}]. SQL Column and Definitions:  [{string.Join(",", columnDefinitionsFromSQL)}] Object columns: [{string.Join(",", objectColumnNames)}]");
                 return new TableInformation(primaryKeyProperties, columnDefinitionsFromSQL, comparer, query, hasIdentityColumnPrimaryKeys);
             }
         }