update SqlHandler

cdplib/db_handlers/SQLHandler.py

@@ -209,13 +209,17 @@ class SQLHandler:
         transaction = connection.begin()
 
         errors = []
+        results = []
 
         # in the case of multi-query execute each query
         for sub_query in sqlparse.split(query):
             if len(sub_query) > 0:
                 try:
-                    connection.execute(sub_query, multi=True)
-
+                    result = connection.execute(sub_query)
+                    if result.rowcount > 0:
+                        data = pd.DataFrame(result.fetchall())
+                        data.columns = result.keys()
+                        results.append(data)
                 except Exception as e:
                     errors.append(str(e))
 
@@ -229,6 +233,7 @@ class SQLHandler:
 
         transaction.commit()
         connection.close()
+        return results
 
     def execute_query_from_file(self, filename: str):
         '''
@@ -439,7 +444,7 @@ class SQLHandler:
                                tablename)
 
             data = self.execute(query)
-            colnames = data.columns.tolist()
+            colnames = data[0].columns.tolist()
 
         return colnames