Hi! Maybe someone can help me. Im trying to connect to a MySQL table to get some data and use it within MonetDB. Eveything works fine, TILL... the query Im running on MySQL is bringing NO DATA. As an example I put it as LIMIT 0 so I dont receive any row. Eventhough I have considered that situation and have defined the array with null values, Im still getting an error. *Could not create a Numpy array from the return type.* Does anybody has an idea how to solve this issue? Thks in advance! Ariel ----------------------------------------------------- DROP FUNCTION connect_to_mysql() ; CREATE FUNCTION connect_to_mysql() RETURNS TABLE(agr_id integer, agr_name string ) LANGUAGE PYTHON { import datetime import mysql.connector cnx = mysql.connector.connect(user='XXXX', password='XXXX',host='192.168.15.5',database='XXXXX',use_pure=False) cursor = cnx.cursor() query = "SELECT agr_id, agr_name FROM AGR_Agreement LIMIT 0 " cursor.execute(query) allrows = cursor.fetchall() ncols = len(cursor.description) colnames = [cursor.description[i][0] for i in range(ncols)] result = dict() for col in range(ncols): if len(allrows) == 0: result[colnames[col]] = [None] for row in range(len(allrows)): if allrows[row][col] == None: valor = None else: valor = str(allrows[row][col]) try: result[colnames[col]].append(valor) except KeyError: result[colnames[col]] = [valor] cursor.close() cnx.close() return result }; sql>SELECT * FROM connect_to_mysql() ; Could not create a Numpy array from the return type.