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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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   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.

   • 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 › 34754663Difference between scalar, table-valued, and aggregate ...

   stackoverflow.com › questions › 34754663

   Jan 13, 2016 · 11. 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.

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     SQL User Defined Functions | Table Valued Function vs Scalar Valued Function | Intellipaat

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     SQL Server Programming Part 10 - Table Valued Functions

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     Spark SQL for Data Engineering 6 : Difference between Managed table and External table #sparksql

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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. 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 ...

7. techcommunity.microsoft.com › blog › sqlserverQuery Performance and multi-statement table valued functions ...

   techcommunity.microsoft.com › blog › sqlserver

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   Jan 15, 2019 · Inline table valued function refers to a TVF where the function body just contains one line of select statement. There is not return variable. Multi-statement table valued function refers to a TVF where it has a return table variable. Inside the function body, there will be statements populating this table variable. In the demo at the end of ...

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 SQL table-valued function (TVF)?

   • TVFs are particularly useful when you need to perform a set of operations on a dataset and return the result as a table, which can then be used in a query like a regular table or joined with other tables. Here are some key characteristics and considerations for SQL Table-Valued Functions: Types of TVFs

   SQL Table-Valued functions - SQL Tutorial

   www.sqltutorial.net/sql-table-valued-functions.html

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   What is a table-valued function?

   • 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. @EhsanJeihani table-valued function is, more or less, a view with parameters.

   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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   When do you need a table valued function?

   • Although I voted to close (too broad), one situation where you want a table valued function is when you want a view that can take parameters. Search for "String splitter" and you'll see one very common use of a table valued function. You use them in joins or Cross Applys to do a lot of useful things.

   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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   How to execute a table-valued function in SQL?

   • 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) In this example, we selected the products whose model year is 2017. You can also specify which columns to be returned from the table-valued function as follows: product_name,

   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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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.