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Fixed issue #40, problem with map funciton in chapter 6 #53

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Fixed issue #40, problem with map funciton in chapter 6 #53

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97c6401
Fixed issue #40, problem with map funciton in chapter 6
JoeKastner Mar 10, 2020
5d9c0d0
Fixed issue # 22, chapter 6 working with JSON
JoeKastner Mar 10, 2020
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6 changes: 3 additions & 3 deletions code/Structured_APIs-Chapter_6_Working_with_Different_Types_of_Data.py
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Original file line number Diff line number Diff line change
Expand Up @@ -310,13 +310,13 @@ def color_locator(column, color_string):

# COMMAND ----------

df.select(map(col("Description"), col("InvoiceNo")).alias("complex_map"))\
df.select(create_map(col("Description"), col("InvoiceNo")).alias("complex_map"))\
.selectExpr("complex_map['WHITE METAL LANTERN']").show(2)


# COMMAND ----------

df.select(map(col("Description"), col("InvoiceNo")).alias("complex_map"))\
df.select(create_map(col("Description"), col("InvoiceNo")).alias("complex_map"))\
.selectExpr("explode(complex_map)").show(2)


Expand All @@ -331,7 +331,7 @@ def color_locator(column, color_string):
from pyspark.sql.functions import get_json_object, json_tuple

jsonDF.select(
get_json_object(col("jsonString"), "$.myJSONKey.myJSONValue[1]") as "column",
get_json_object(col("jsonString"), "$.myJSONKey.myJSONValue[1]").alias("column"),
json_tuple(col("jsonString"), "myJSONKey")).show(2)


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