Apache Spark | Databricks for Apache Spark | Parse Json in Spark Dataframe | Using Spark SQL

#apachespark #json #databricks #bigdata

Apache Spark | Databricks for Apache Spark | Parse Json in Spark Dataframe | Using Spark SQL
In this video, we will learn a new feature update from Databricks to parse the JSON string column in Spark Dataframe easily using Spark SQL.

Dataset used in Demo:

Blog link to learn more on Spark:

Blog to handle nested Json file using Spark

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[sid]

I am interested to know if we can use advanced UDF features available in scala and Python thru spark SQL.

[saisaranv]

superb video and how to handle array elements in a single string column instead of pyspark(explode) ...like using only spark sql?

[ybj]

Thank's for the video, I've a question can we use the Select query from spark sql (what you show on the last) within Synapse notebook?

[adelinejebamalar]

Very good explanation.Just a small doubt.I need to read file from API how to do that?

[thesadanand]

Hi Azar, i am getting null values when using from_json, can you help me figure out the missing piece here . TY
~ input is the .csv file with json e.g.
id, request
1, {"Zipcode":704, "ZipCodeType":"STANDARD", "City":"PARC PARQUE", "State":"PR"}
2, {"Zipcode":704, "ZipCodeType":"STANDARD", "City":"PASEO COSTA DEL SUR", "State":"PR"}
~my code (scala/spark)
val input_df = spark.read.option("header", true).option("escape", "\"").csv(json_file_input)
val json_schema_abc = StructType(Array(
StructField("Zipcode", IntegerType, true),
StructField("ZipCodeType", StringType, true),
StructField("City", StringType, true),
StructField("State", StringType, true))
)
val output_df = input_df.select($"id", from_json(col("request"), json_schema_abc).as("json_request"))
.select("id", "json_request.*")

[magicmisfits]

Sir i need a help, can you please suggest how to calculate the size of data frame in bytes in python please

[keepsmile]

How could We do the same without databrcks?.I mean can we do this with only pyspark?

[Randomvideos-ucsp]

Sir I have a table in sql in which I have a column holding json values.
I copied the data in a CSV file.
While printing schema I'm getting _corrupt_record.
I used mode="dropMalformed" it is returning zero records means my each row is malformed.
How to solve it sir