PostgreSQL Documentation 16 9 25 Set Returning Functions
generate subscripts array anyarray dim integer reverse boolean setof integer Generates a series comprising the valid subscripts of the dim th dimension of the given array When reverse is true returns the series in reverse order
Return More Than One Row Of Data From PL pgSQL Functions, It returns a rowset of rows defined by the type holder int int8 The rows that it returns are defined by the group by query in its body The PL pgSQL function is a little more complicated but let s go through it The function starts off by declaring a variable r to be of the rowtype holder
38 5 Query Language SQL Functions PostgreSQL
Alternatively an SQL function can be declared to return a set that is multiple rows by specifying the function s return type as SETOF sometype or equivalently by declaring it as RETURNS TABLE columns In this case all rows of the last query s result are returned Further details appear below
Postgresql How To Write A Function That Returns Text Or Integer , Building on this simple table CREATE TABLE tbl tbl id int txt text nr int This function returns either integer or text or any other type if you allow it depending on the input type SELECT f insert data 1 foo text explicit cast needed SELECT f insert data 1 7 Simple case
Postgres How To Return An Integer Array From Stored Function
Postgres How To Return An Integer Array From Stored Function, The function id adj returns a set of rows single column of integers and is written as follows DROP FUNCTION IF EXISTS id adj hz id int CREATE FUNCTION id adj id int returns SETOF int AS select b id from existingtable a existingtable b where a id b id and a id 1 and ST Distance a wkb geometry b wkb geometry lt 0 05 LANGUAGE
Databases RETURN TABLE Is Converted To RETURN SETOF Int In Postgres
Postgresql What Is The Difference Between RETURNS SETOF Integer
Postgresql What Is The Difference Between RETURNS SETOF Integer 1 Answer Sorted by 3 The docs say this on CREATE FUNCTION The name of an output column in the RETURNS TABLE syntax This is effectively another way of declaring a named OUT parameter except that RETURNS TABLE also implies RETURNS SETOF Share Improve this answer Follow answered Nov 6 2021 at 20 11 Evan Carroll
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CREATE OR REPLACE FUNCTION create user IN email EMAIL password TEXT thumb TEXT RETURNS VARCHAR 40 AS BODY DECLARE id VARCHAR 40 BEGIN insert into users unqid thumb email password values gen random uuid thumb email password returning unqid INTO id RETURN id END BODY How To Create A Postgres Function That Returns A Value. CREATE OR REPLACE FUNCTION increment i integer RETURNS integer AS BEGIN RETURN i 1 END LANGUAGE plpgsql Return a record containing multiple output parameters CREATE FUNCTION dup in int out f1 int out f2 text AS SELECT 1 CAST 1 AS text is text LANGUAGE SQL SELECT FROM dup 42 Set Returning Functions This section describes functions that possibly return more than one row The most widely used functions in this class are series generating functions as detailed in Table 9 58 and Table 9 59 Other more specialized set returning functions are described elsewhere in this manual
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