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Data Engineering
Join discussions on data engineering best practices, architectures, and optimization strategies within the Databricks Community. Exchange insights and solutions with fellow data engineers.
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ossinova
by • Contributor II
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PIVOT on month and quarter

I want to simplify this query:SELECT year(EntryDate) Year, AccountNumber, sum(CreditBase - DebitBase) FILTER(WHERE month(EntryDate) = 1) AS jan_total, sum(CreditBase - DebitBase) FILTER(WHERE month(EntryDate) = 2) AS feb_total, sum(CreditBase - Debi...

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Lakshay
Databricks Employee
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Hi @Oscar Dyremyhr​ , PIVOT doesn't support two FOR clauses. You can PIVOT either on month or on quarter.https://docs.databricks.com/sql/language-manual/sql-ref-syntax-qry-select-pivot.html

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Raymond_Hu
by • New Contributor
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ConnectException error

I'm using PySpark on Databricks and trying to pivot a 27753444 X 3 matrix. If I do it in Spark DataFrame: df = df.groupBy("A").pivot("B").avg("C") it takes forever (after 2 hours and I canceled it). If I convert it to pandas dataframe and then pivo...

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shyam_9
Databricks Employee
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Hi @Raymond_Hu,This means that the driver crashed because of an OOM (Out of memory) exception and after that, it's not able to establish a new connection with the driver. Please try below optionsTry increasing driver-side memory and then retry.You ca...

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