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Tag: Catalyst Optimizer

Apache Spark Catalyst Optimizer steps
2022-05-10

Apache Spark / Dataframe API vs. SQL

Working with data using Apache Spark is possible in several ways. If you come more from a software development background, you will likely lean towards using the Dataframe API

Matěj Černý
Matěj Černý

Big Data

  • Apache Spark / CSV file
  • Apache Spark / Dataframe API vs. SQL

PL/SQL by Examples

  • Anonymous Block and Branching
  • Scalar Data Types
  • Composite Data Types
  • FOR and WHILE loop
  • Procedures and Functions
  • Package
  • Exceptions
  • Savepoints
  • Object
  • Inheritance and Polymorphism

Oracle 12c

  • Querying from an associative array
  • User-defined function in the WITH clause
  • Top N rows, pagination
  • Cheat sheet / Oracle DDL operations

Links

  • Petr Stříbný
  • Josef Strzibny
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