How do I create a function that returns a table in SQL?

How do I create a function that returns a table in SQL?

Procedure

1. Define the CREATE FUNCTION (table) statement: Specify a name for the function. Specify a name and data type for each input parameter. Specify the routine attributes. Specify the RETURNS TABLE keyword.
2. Execute the CREATE FUNCTION (table) statement from a supported interface.

How do I create a return table in PostgreSQL?

To return a table from the function, you use RETURNS TABLE syntax and specify the columns of the table. Each column is separated by a comma (, ). In the function, we return a query that is a result of a SELECT statement.

How do I create a function in Sybase?

Examples

1. Example 1. Concatenates a firstname string and a lastname string: CREATE FUNCTION fullname ( firstname CHAR(30), lastname CHAR(30) ) RETURNS CHAR(61) BEGIN DECLARE name CHAR(61); SET name = firstname || ‘ ‘ || lastname; RETURN (name); END.
2. Example 2.
3. Example 3.

What is a table function?

Table functions are functions that produce a collection of rows (either a nested table or a varray) that can be queried like a physical database table. You use a table function like the name of a database table, in the FROM clause of a query. A table function can take a collection of rows as input.

Does Snowflake support Stored Procedures?

Snowflake provides a JavaScript API (in the form of JavaScript objects and methods). The API enables stored procedures to execute database operations such as SELECT, UPDATE, and CREATE.

How to create a function that returns a table?

To define a function that returns a table, you use the following form of the create function statement: create or replace function function_name ( parameter_list ) returns table ( column_list ) language plpgsql as $$ declare — variable declaration begin — body end ; $$

When to use a table-valued function in Java?

A table-valued function is a user-defined function that returns data of a table type. The return type of a table-valued function is a table, therefore, you can use the table-valued function just like you would use a table.

How to create table valued function in SQL?

CREATE FUNCTION udfProductInYear ( @model_year INT ) RETURNS TABLE AS RETURN SELECT product_name, model_year, list_price FROM production.products WHERE model_year = @model_year; The syntax is similar to the one that creates a user-defined function.

Can you access a table from a function?

You can’t access Temporary Tables from within a SQL Function. You will need to use table variables so essentially: Based on comments to this question here is my recommendation. You want to join the results of either a procedure or table-valued function in another query.