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

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

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

    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. Table-Valued Functions are represented as ...

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

    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. techcommunity.microsoft.com › t5 › sql-serverQuery Performance and multi-statement table valued functions

    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.

  7. www.sqlshack.com › sql-server-multi-statementSQL Server multi-statement table-valued functions - SQL Shack

    Sep 11, 2019 · Description and syntax: Multi-statement table-valued function returns a table as output and this output table structure can be defined by the user. MSTVFs can contain only one statement or more than one statement. Also, we can modify and aggregate the output table in the function body. The syntax of the function will be liked to the following : 1.

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  9. www.mssqltips.com › sqlservertip › 7251Table Valued Function in SQL Server Examples

    May 12, 2022 · If the function is a Table Valued Function (i.e. it returns a table) this property contains the definition of columns in the output table. A string containing the output table definition. FillRowMethodName The name of a method in the same class that fills a row in the table returned by the function.