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Showing posts with the label Apache Spark Sql
Why Does Using Rank() Windowing Function Break The Parser?

Why Does Using Rank() Windowing Function Break The Parser?

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The windowing functions online docs for spark sql include the following example: https://databricks… Read more Why Does Using Rank() Windowing Function Break The Parser?
Spark Couldn't Find Window Function

Spark Couldn't Find Window Function

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Using the solution provided in https://stackoverflow.com/a/32407543/5379015 I tried to recreate the… Read more Spark Couldn't Find Window Function
Spark-sql Window Functions On Dataframe - Finding First Timestamp In A Group

Spark-sql Window Functions On Dataframe - Finding First Timestamp In A Group

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I have below dataframe (say UserData). uid region timestamp a 1 1 a 1 2 a 1 3 a 1 … Read more Spark-sql Window Functions On Dataframe - Finding First Timestamp In A Group
Sql Join With Selecting Previous Matching Value With Group By

Sql Join With Selecting Previous Matching Value With Group By

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I have 2 tables that I want to join on a key that matches with the first previous record. I have a … Read more Sql Join With Selecting Previous Matching Value With Group By
Doing Some Of Columns Based On Some Complex Logic In Pyspark

Doing Some Of Columns Based On Some Complex Logic In Pyspark

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Here is the question in the image attached: Table: Row Col1 Col2 Col3 Result 1 10 … Read more Doing Some Of Columns Based On Some Complex Logic In Pyspark
Select With Window Function (dense_rank()) In Sparksql

Select With Window Function (dense_rank()) In Sparksql

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I have a table which contains records for customer purchases, I need to specify that purchase was m… Read more Select With Window Function (dense_rank()) In Sparksql