add multi file

tensnsorflow/multi.py

@@ -13,7 +13,8 @@ def test():
     ti = pti.TiContext(spark)
     ti.tidbMapDatabase("jerry_test")
 
-    validate_date = spark.sql("select max(stat_date) from esmm_train_data").rdd.map(lambda x: str(x[0]))
+    validate_date = spark.sql("select max(stat_date) from esmm_train_data").rdd.map(lambda x: str(x[0])).collect()
+    print(validate_date)
     # print("validate_date:" + validate_date)
     # temp = datetime.datetime.strptime(validate_date, "%Y-%m-%d")
     # start = (temp - datetime.timedelta(days=10)).strftime("%Y-%m-%d")