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1. spark.apache.org › docs › latestTable-valued Functions (TVF) - Spark 3.5.3 Documentation

   spark.apache.org › docs › latest

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   Table-valued Functions (TVF) Description. A table-valued function (TVF) is a function that returns a relation or a set of rows. There are two types of TVFs in Spark SQL: a TVF that can be specified in a FROM clause, e.g. range; a TVF that can be specified in SELECT/LATERAL VIEW clauses, e.g. explode. Supported Table-valued Functions

   • Functions

     Functions. Spark SQL provides two function features to meet...

   • Select

     Table-value function; Inline table [ LATERAL] ( Subquery )...

   • SQL Syntax

     SQL Syntax. Spark SQL is Apache Spark’s module for working...

2. stackoverflow.com › questions › 40535519sql - When would you use a table-valued function? - Stack ...

   stackoverflow.com › questions › 40535519

   33. Table-valued functions are "just" parameterized views. This makes them extremely powerful for encapsulating logic that would otherwise be hidden behind an opaque stored procedure. Here's an example: Inline Table-valued Function: create function dbo.GetClients (. @clientName nvarchar(max) = null. ) returns table.

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4. books.japila.pl › spark-sql-internals › table-valuedTable-Valued Functions - The Internals of Spark SQL

   books.japila.pl › spark-sql-internals › table-valued

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   Spark SQL ; Features ; Table-Valued Functions ; Table-Valued Functions¶ Table-Valued Functions (TFVs) are functions that return a table (as a LogicalPlan) that can be used anywhere that a regular (scalar) table is allowed. Table functions behave similarly to views, but, as functions in general, table functions accept parameters.

5. www.sqlservertutorial.net › sql-server-user-definedSQL Server Table-Valued Function By Practical Examples

   www.sqlservertutorial.net › sql-server-user-defined

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   Executing a table-valued function. To execute a table-valued function, you use it in the FROM clause of the SELECT statement: SELECT. *. FROM. udfProductInYear(2017); Code language: SQL (Structured Query Language) (sql) In this example, we selected the products whose model year is 2017.

6. sparkbyexamples.com › spark › spark-sql-functionsSQL Built-in Functions in Spark - Spark By Examples

   sparkbyexamples.com › spark › spark-sql-functions

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   Apr 22, 2024 · Importing SQL Functions in Scala. In Spark with Scala, all these are part of org.apache.spark.sql.functions and return org.apache.spark.sql.Column type. In order to use these, you need to use the following import. // Import all SQL Functions import org.apache.spark.sql.functions._ Alternatively, you can import a specific in Scala using the ...

7. www.sqltutorial.net › sql-table-valued-functionsSQL Table-Valued functions - SQL Tutorial

   www.sqltutorial.net › sql-table-valued-functions

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   SQL Table-Valued Function (TVF) is a user-defined function that returns a table as a result set. Unlike scalar functions that return a single value, a TVF can be used to encapsulate a complex logic that generates and returns a table of data. TVFs are particularly useful when you need to perform a set of operations on a dataset and return the ...

8. People also ask

   What is a table-valued function in Spark SQL?

   • A table-valued function (TVF) is a function that returns a relation or a set of rows. There are two types of TVFs in Spark SQL: a TVF that can be specified in SELECT/LATERAL VIEW clauses, e.g. explode. containing rows in a range from 0 to end (exclusive) with step value 1. containing rows in a range from start to end (exclusive) with step value 1.

   Table-valued Functions (TVF) - Spark 3.5.0 Documentation

   spark.apache.org/docs/latest/sql-ref-syntax-qry-select-tvf.html

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   What's the difference between a scalar function and a tabled-valued function?

   • Please also see: A scalar function returns a single value. It might not even be related to tables in your database. A tabled-valued function returns your specified columns for rows in your table meeting your selection criteria. An aggregate-valued function returns a calculation across the rows of a table -- for example summing values.

   Difference between scalar, table-valued, and aggregate functions in SQL

   stackoverflow.com/questions/34754663/difference-between-scalar-table-valued-and-aggregate-functions-in-sql-server

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   What is a table valued function?

   • Table valued functions are a type of re-useable code. Code re-use is almost always better than code repetition. Table-valued functions are "just" parameterized views. This makes them extremely powerful for encapsulating logic that would otherwise be hidden behind an opaque stored procedure. Here's an example: Inline Table-valued Function:

   sql - When would you use a table-valued function? - Stack Overflow

   stackoverflow.com/questions/40535519/when-would-you-use-a-table-valued-function

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   What are Spark SQL functions?

   • Spark SQL functions are a set of built-in functions provided by Apache Spark for performing various operations on DataFrame and Dataset objects in Spark SQL. These functions enable users to manipulate and analyze data within Spark SQL queries, providing a wide range of functionalities similar to those found in traditional SQL databases.

   SQL Built-in Functions in Spark - Spark By Examples

   sparkbyexamples.com/spark/spark-sql-functions/

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   What is a table-valued function in SQL?

   • The function above returns the result set of a single SELECT statement, therefore, it is also known as an inline table-valued function. To execute a table-valued function, you use it in the FROM clause of the SELECT statement: FROM udfProductInYear(2017); Code language: SQL (Structured Query Language) (sql)

   SQL Server Table-Valued Function By Practical Examples

   www.sqlservertutorial.net/sql-server-user-defined-functions/sql-server-table-valued-functions/

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   What is a window function in Spark SQL?

   • returns the population variance of the values in a column. Spark SQL window functions are used for performing calculations across a group of rows, known as a window, within a DataFrame. These functions allow users to perform aggregations, ranking, and analytical calculations over partitions of data defined by a window specification.

   SQL Built-in Functions in Spark - Spark By Examples

   sparkbyexamples.com/spark/spark-sql-functions/

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9. database.guide › what-is-a-table-valued-functionWhat is a Table-Valued Function in SQL Server? - Database.Guide

   database.guide › what-is-a-table-valued-function

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   In SQL Server, a table-valued function (TVF) is a user-defined function that returns a table. This is in contrast to a scalar function, which returns a single value. You can invoke a table-valued function in the same way that you can query a table. For example, you can use it in a SELECT statement.