Split Input into Training and Testing Data Sets - Aster Analytics

This code divides the 150 data rows into a training data set (80%) and a testing data set (20%):

DROP TABLE IF EXISTS iris_train;
DROP TABLE IF EXISTS iris_test;

CREATE TABLE iris_train AS
  SELECT * FROM iris_input WHERE id%5!=0;

CREATE TABLE iris_test AS
  SELECT * FROM iris_input WHERE id%5=0;

SELECT * FROM iris_train ORDER BY id;

SELECT * FROM iris_test ORDER BY id;