Quotes column names, handles selecting from tables with 0 rows.

sqlshare_rest/backend/mssql.py

@@ -349,6 +349,8 @@ def make_unique_name(name, existing):
             column_name = make_unique_name(column_name, existing_column_names)
             existing_column_names[column_name] = True
 
+            column_name = "[%s]" % (column_name)
+
             if (col_type == float_type) or (col_type == decimal_type):
                 if null_ok:
                     column_defs.append("%s FLOAT" % column_name)
@@ -434,10 +436,14 @@ def create_table_from_query_result(self, name, source_cursor):
 
         full_name = "[%s].[%s]" % (QUERY_SCHEMA, name)
         create_table = "CREATE TABLE %s (%s)" % (full_name, column_def)
+
         cursor.execute(create_table)
 
         row = source_cursor.fetchone()
 
+        if row is None:
+            return 0
+
         placeholders = ", ".join(list(map(lambda x: "?", row)))
         insert = "INSERT INTO %s VALUES (%s)" % (full_name, placeholders)
         row_count = 0