F 43 tablefunc functions that return tables PostgreSQL
Function Description normal rand numvals integer mean float8 stddev float8 setof float8 Produces a set of normally distributed random values crosstab sql text setof record Produces a pivot table containing row names plus N value columns where N is determined by the row type specified in the calling query
PostgreSQL Documentation 16 7 2 Table Expressions, A table expression computes a table The table expression contains a FROM clause that is optionally followed by WHERE GROUP BY and HAVING clauses Trivial table expressions simply refer to a table on disk a so called base table but more complex expressions can be used to modify or combine base tables in various ways
How to return a table rows or record from a function in PostgreSQL 9
The best solution is create or replace function fn list vname varchar returns table id integer name text status text as SELECT id name status from usuario WHERE name vname language sql If PL pgSQL is needed because some other procedural code needs to run before the query then return query should be used instead of a loop
PL pgSQL Function Returns A Table PostgreSQL Tutorial, If you call the function using the following statement PostgreSQL returns a table that consists of one column that holds an array of rows SELECT get film Al Code language PostgreSQL SQL dialect and PL pgSQL pgsql Output In practice you often process each individual row before appending it in the function s result set
Postgresql PL pgSQL functions How to return a normal table with
Postgresql PL pgSQL functions How to return a normal table with , CREATE OR REPLACE FUNCTION my function user id integer RETURNS TABLE id integer firstname character varying lastname character varying AS DECLARE ids character varying BEGIN ids Some code which build the ids string not interesting for this issue RETURN QUERY EXECUTE SELECT users id users firstname users last
Understanding PostgreSQL Date Formats And Formatting Functions
38 5 Query Language SQL Functions PostgreSQL
38 5 Query Language SQL Functions PostgreSQL 38 5 9 SQL Functions Returning Sets When an SQL function is declared as returning SETOF sometype the function s final query is executed to completion and each row it outputs is returned as an element of the result set This feature is normally used when calling the function in the FROM clause
Postgres Update Table Syntax Brokeasshome
Overloading PostgreSQL allows function overloading that is the same name can be used for several different functions so long as they have distinct input argument types Whether or not you use it this capability entails security precautions when calling functions in databases where some users mistrust other users see Section 10 3 Two functions are considered the same if they have the same PostgreSQL Documentation 16 CREATE FUNCTION. The crosstab function receives an SQL SELECT command as a parameter which must be compliant with the following restrictions The SELECT must return 3 columns The first column in the SELECT will be the identifier of every row in the pivot table or final result In our example this is the student s name PostgreSQL Create Function statement examples We ll use the film table from the dvdrental sample database The following statement creates a function that counts the films whose length between the len from and len to parameters
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