![]() The fire-engine came to a screeching halt at the top of a mountain when they saw the bright red crackling fire. They tossed and tossed in their seats as they went over huge rocks through the mountains. Toss and Spot were surprised at how bumby the ride was up to the fire. Toss grabbed his dog, his boots that he would toss in the truck, and slid down the fireman pole which tossed him and his dog right into the driver's seat of the huge shiny red fire-engine. Sure enough, Spot was sound asleep in pile of unmatched socks. He was in such a hurry at this time that he was tossing handfuls of banana peels and socks high into the air hoping to uncover Spot. He knew his dog had a tendency to sleep through the alarm and so he, again, started tossing and tossing. In a panic, he realized that he had probably covered Spot under a pile of junk that he had carelessly tossed just seconds earlier. He then, snatched his red hard-hat of his terribly cluttered dresser and tossed it on his head. After tossing and tossing clothes and trash into new and bigger piles of junk, he saw the sparkling yellow color of his favorite fire-suit, which he slipped on. Toss had been particularly messy that week and he was tossing dirty socks and shirts around in piles in an attempt to find his fire-suit. Toss sprang up in his bed to the sound of the alarm that went,"Beep, Beep, Beep!" He immediately realized that someone was in danger and tossed his blankets onto the floor and popped out of bed. It was late during the quiet night at the station when suddenly Mr. He and his fire-fighting dog, Spot, were the quickest team around. They shouldn't worry about tossing fast, but tossing well. Everyone should get a chance to catch and toss the ball. As the story is read, whenever the word " toss" is said, the person with the ball must toss it to another person in the circle, remembering the correct way to toss and catch which they previously learned. Explain that each group will be given an object to toss. All circles should be close enough to the instructor to easily hear the story. ![]() ![]() Demonstrate and lead the activity as follows.įirst, 4-5 students make a circle. Explain that there is a " magic word" in this story, and they will have to listen closely to hear it. explain you will be telling them a really cool story. I hope you like this article.After students have had ample practice in underhand throwing to themselves, to targets, to a partner, etc. In this article, you have learned how to use Pyspark SQL “ case when” and “ when otherwise” on Dataframe by leveraging example like checking with NUll/None, applying with multiple conditions using AND (&), OR (|) logical operators. otherwise(df.gender).alias("new_gender")) ![]() To explain this I will use a new set of data to make it simple.ĭf5.withColumn(“new_column”, when((col(“code”) = “a”) | (col(“code”) = “d”), “A”) We often need to check with multiple conditions, below is an example of using PySpark When Otherwise with multiple conditions by using and (&) or (|) operators. Multiple Conditions using & and | operator "ELSE gender END as new_gender from EMP").show()Ģ.3. Spark.sql("select name, CASE WHEN gender = 'M' THEN 'Male' " + You can also use Case When with SQL statement after creating a temporary view. "WHEN gender = 'F' THEN 'Female' WHEN gender IS NULL THEN ''" +ĭf4 = df.select(col("*"), expr("CASE WHEN gender = 'M' THEN 'Male' " + When() function take 2 parameters, first param takes a condition and second takes a literal value or Column, if condition evaluates to true then it returns a value from second param.įrom import expr, colĭf3 = df.withColumn("new_gender", expr("CASE WHEN gender = 'M' THEN 'Male' " + Usage would be like when(condition).otherwise(default). PySpark when() is SQL function, in order to use this first you should import and this returns a Column type, otherwise() is a function of Column, when otherwise() not used and none of the conditions met it assigns None (Null) value. Using w hen() o therwise() on PySpark DataFrame.
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