ERROR: A column definition list is required for functions returning RECORD. RETURN NEXT var; SETOF Same as table or view structure : SETOF RECORD. For example: CREATE FUNCTION public.sp_get_baz_for_cust(bpchar) RETURNS SETOF bpchar AS ' DECLARE cust_id ALIAS FOR $1; baz_num CHAR( 15 ); selected_baz RECORD; BEGIN FOR selected_baz IN EXECUTE SELECT baz_number FROM baz_table WHERE customer_id = || quote_literal( cust_id ) LOOP RETURN NEXT selected_baz.ticket_number; END LOOP; RETURN; END; Without quote_literal(), the query tends to choke on special characters (like colons, dashes, et. The function may return either a refcursor value or a SETOF some datatype. So you are not bound to use SETOF with polymorphic types like you speculated. -Josh. Let's make a function that returns all the rows of a table whose name you pass in as a parameter. It's pretty ugly and when I did the discussion at SFPUG it was pretty unanimous that it was a bad hack and pretty much the wrong way to go about solving the problem. Here it is again. For the longest time I was stuck on getting 0 records back. When you use the function, you need to say something like:select * from func() as foo(col1 int, col2 varchar, ...); Since it's an arbitrary record type, it doesn't know what the types are,so you need to provide it at select time. Here we've passed in Department as the argument which means that we expect to get rows in the general form of Department records which is an integer followed by a text string, so we tell PostgreSQL that the alias for the result should be called dept and that it is made up of an integer named deptid and a text named deptname. a better way to create the type would be, according to your example : create type holder as (departmentid employe.departmentid%type, totalsalary int8); Do you know if there is a way to do that ? Add your comments here... 2005/07/11 16:59 GMT (via web): We can do the same thing using a record type so that we do not need an outside type, however it is much more complicated and involves a bogus select. In a prior article Use of Out and InOut Parameters we demonstrated how to use OUT parameters and INOUT parameters to return a set of records from a PostgreSQL function. quote_literal() was the solution. PostgreSQL's™ stored functions can return results in two different ways. Someone had wrapped their entire comment in pre /pre and made the page layout confoundingly wide. I want to> pass the results of that query as a recordset to the caller - I can> do it as a refcursor (but via odbc a refcursor just appears as an> empty recordset, no use at all. The function name above is “get_people ()” which returns an SETOF (a list of records) of type person. Unfortunately, we overlooked the possibility of distinguishing between functions that return a TABLE (of a type) or a SETOF (a type) in PostgreSQL. 2003/01/13 13:43 EST (via web): then I get a ---> ERROR: parser: parse error at or near "(". Imagine this: CREATE OR REPLACE FUNCTION 'public'. For example: Without quote_literal(), the query tends to choke on special characters (like colons, dashes, et. I think it won't like spaces much either. [/QUOTE] That single predicate, "multiple output parameters", is creating the (useless?) ; The p_year is the release year of the films. In Oracle, the functions I'm porting return a TABLE of TYPE datatype, this TABLE being itself a named type. RECORD structure. ...it would still be nice just to see how the last example could be done with a RECORD type. I agree This document should be in PostGre documentation. In fact setof implies that I know the kind of record, but this information is know only at runtime. Hello! The name of a table it acts > on is one of its input variables, and its output is a set of rows > from that table. For example, if you wanted to get an idea of operating expenses for departments where the overhead is 75% for departments whose total salaries were greater than 70,000 and 50% otherwise and only wanted to return department ids for departments whose salaries plus overhead was greater than 100,000 you might write something like: Let's look at the differences between this and PLpgSQLDepartmentSales(). If we instead had wanted to return a holder to include the salary + overhead value, we could have defined the function to return setof holder and used return next r; here. If you call your set-returning function the wrong way (IOW the way you might normally call a function), you will get this error message: Set-valued function called in context that cannot accept a set. I would like to see 'return next' push the return row, then set all columns to null, ready for fresh data. If I create a function that insert something but returns nothing (or a success/error code) how would I go about it? It's very important tutorial because many people don�t know how crete that type of functions(procedures), and the way to make it on PostgreSQL is so diferent with other RDBMS such as MSSQL, ORACLE, INFORMIX, INTERBASE/FIREBIRD etc.. How can I cath the system errors that plpgsql return ?? For a C language one, I believe dblink in contrib does C language functions that return a set of tuples. [tablefunc.c does this, but for a ROWTYPE, not a RECORD] What would be the syntax for calling this? If there is only one output parameter, write that parameter's type instead of record. This page was last edited on 19 May 2012, at 09:40. (10 replies) Hi all. Let's do something very simple, a function that returns the numbers from 1 to an argument and those numbers doubled. If you came here wondering how you can return multiple values from a function (like in Oracle PL/SQL): CREATE FUNCTION temp() RETURNS record DECLARE v_record RECORD; BEGIN select 1, 6, 8 into v_record; return v_record; END; Then you do: select * from temp() as (int4, int4, int4). Something like: 2003/10/25 15:33 EST (via web): 2003/10/24 17:31 EST (via web): Can someone help me?! cases it must be done interatively): sszabo, 2003/05/15 19:18 EST (via web): The following illustrates how to call the get_film() function: I just couldn't find the correct syntax on the internet. This tutorial must become part of Postgresql Function Documentation. 2003/10/17 19:26 EST (via web): special case for a single column output. You have to do something like (given r as record type and returning setof record): select into r 1::int as num, 1::int as doublenum; before using r in the for loop. The SETOF modifier indicates that the function will return a set of items, rather than a single item. Perhaps you could use triggers, https://wiki.postgresql.org/index.php?title=Return_more_than_one_row_of_data_from_PL/pgSQL_functions&oldid=17343. Hi, > But, I get the following error:"ERROR: a column definition list is required > for functions returning "record" SQL state: 42601". 2003/06/30 08:25 EST (via web): Specify the argument list in the function if the function is overloaded. The name of a table it acts on is one of its input variables, and its output is a set of rows from that table. Is this even possible in PostgreSQL ? PostgreSQL 7.3 now supports a much more flexible system for writing set returning functions (SRFs) that when combined with some of the new function permission options allow a greater flexibility in setting up schemas. you can do "select foo, set_of_things(bar) from mytable" if set_of_things() is an SQL function, or a C function apparently - this started from trying to figure out how the int_array_enum() function in contrib/intagg got away with it - but not if it's a PL/pgSQL function. Assignment of a yet-unknown column with the hstore operator #=. One of my tables has a recursive relationship. In the function body, we used a for loop staetment to process the query row by row.. Related (you linked to that one yourself): Refactor a PL/pgSQL function to return the output of various SELECT queries; FOR-IN-EXECUTE to loop over a dynamic query. Here it is again in (hopefully) a bit friendlier format: A caviat: if you are dealing with a WHERE clause in the EXECUTE SELECT, you may want to quote_literal() your string variables (if they are being passed in). Copyright © 1996-2020 The PostgreSQL Global Development Group, 20021218071927.J85864-100000@megazone23.bigpanda.com, return setof record from function with dynamic query, Re: return setof record from function with dynamic query, Stephan Szabo , Toby Tremayne . When you use the function, you need to say something like: select * from func() as foo(col1 int, col2 varchar, ...); Since it's an arbitrary record type, it doesn't know what the types are, so you need to provide it at select time. ASSIGN to row variable. Calling function GetRows(text) error: testdb=# select * from GetRows('department') as dept(deptid integer, deptname text); ERROR: parser: parse error at or near "(" testdb=# why? If I give a SELECT GetEmployees(); by Stephan Szabo DECLARE row variable of ROW or RECORD type. something like DECLARE rec RECORD; BEGIN rec.$1 := 1; (...), 2004/05/22 09:02 AST (via web): The main body does a loop over the group by query stated setting r to each row in sequence. warmage@magicmail.co.za. The key point here is that you must write RETURNS SETOF record to indicate that the function returns multiple rows instead of just one. Currently, functions returning sets can also be called in the select list of a query. justinc, 2003/01/28 16:35 EST (via web): A PL/pgSQL function can also do additional operations on the records or only queue up only some records. That might be ok. – arthur Nov 6 '13 at 9:21 Thank you. 2003/10/15 03:23 EST (via web): We need to give the system an idea of what types we expect this function to return as part of the query. Let's break down this function. 2003/10/24 16:45 EST (via web): Function Returning SETOF Problem. (I know this could be done with sub-selects, but in more complicated Sorry for the spooge in the last posting. The body of the loop is the new return form, 'return next' which means that an output row is queued into the return set of the function. The following simplified example shows what I'm talking about 2003/05/28 11:34 EST (via web): I have a stored function in a postgresql databse, and I want to call it from my java program. 2003/11/03 00:12 EST (via web): Thanks, this helped quite a bit. It would be really nice if someone (other than me) with a bit of spare time would hit the "Edit this page" link at the top of this page and fix up the comments and properly line up the examples. 2003/01/13 08:19 EST (via web): Want to edit, but don't see an edit button when logged in? The first version uses a pre-defined type as its return type and internal type. > First it was defined to return SETOF someview. I assume in this that you already have some experience with writing functions in SQL and PL/pgSQL for PostgreSQL. INSIDE function. I need a Postgres function to return a virtual table (like in Oracle) with custom content. The function makes a variable of the rowtype numtype and for each number from 1 to the passed argument assigns num and doublenum and then does return next r; in order to enqueue a row of output. I tried building the string as SELECT baz_number FROM baz_table WHERE customer_id = ' || cust_id || ' - no dice. 2003/05/29 08:00 EST (via web): Using Function returning setof record in JOIN; Why I need to use SETOF TEXT when I'm returning single column? The type of a column is referenced by writing table_name.column_name%TYPE. See: I have a function returning setof record. This variable will be used to store the rows coming from the query in the main body of the function. 2003/04/17 03:39 EST (via web): 2003/02/27 11:27 EST (via web): > Hi all. Next, we want to determine if the totalsalary is now greater than 100,000 and if so return it's identifier, so. I've tested this with 4 levels of recursion so far and its worked, so I believe it is correct. These functions are used in the same fashion as the first function. If I create a sql string and the number of column are dynamicaly determined, then how I can execute the string created? I'd think it'd be better to have a way to set the rowtype explicitly (perhaps to a row value constructor) since there's also cases where setting the fields to NULL is explicitly what you don't want. Perfect! #include function with multiple return values The return next statement adds a row to the returned table of the function.. Calling this function is a little more complicated than calling the SRFs above. Fixed the ANNOYING formatting of this page. The PL/pgSQL function is a little more complicated, but let's go through it. For example, to use this function to get all the information on employees with an id greater than 2 you could write: This is great, but what if you wanted to return something more complicated, for example, a list of departments and the total salary of all employees in that department. 2003/06/26 12:13 EST (via web): SETOF anyelement - get_call_result_type; set returning function with variable argument - possible? > > > I have a plpgsql function that returns dataset. A caviat: if you are dealing with a WHERE clause in the EXECUTE SELECT, you may want to quote_literal() your string variables (if they are being passed in). GREAT!!! al.) So far, the composite type returning functions only work if you're certain that you're returning a type that is made up of the same types as the one the function is declared to return. 2005/03/13 14:59 GMT (via web): SRFs can return either a rowtype as defined by an existing table or a generic record type. Newbie: This article requires PostgreSQL version 7.3 or greater. I have a function> (code below) that creates and executes a dynamic query. Using OUT and INOUT function arguments. What I want is to creat a function that will manage these tables when an event occures. Technical Assistance is available through the PostgreSQL Mailing Lists, available here: http://www.postgresql.org/community/lists. Add your comments here... 2003/03/10 08:37 EST (via web): Depending on which of these return methods are used determines how the function should be called. Do you now a better way to create the type of the result type of the function. This tutorial must become part of Postgresql Function Documentation, with more examples in many other languages than SQL and PL/PGSQL such as Python, Perl, C, etc... 2003/04/24 16:44 EST (via web): Writing a function that returned the most current row for any given entry point was a little tricky as nothing mentioned recursion that I saw. Click here. To Warmage: In 7.3, I believe you can make a function return void if you don't want to use its value. Question about functions that return a set of records Group by clause creating "ERROR: wrong record type supplied in RETURN NEXT" (version 8.1.11 -- grr...) Function Returning SETOF RECORD: Trouble With Char Type Finally, we're going to make PL/pgSQL functions that synthesize rows completely from scratch. Check out the sections of the manual that talk about PLPGSQL.... 35.7.1. An SRF can be used in place of a table or subselect in the FROM clause of a query. For this function we'll write a version in SQL and then a version in PL/pgSQL: The SQL is very similar to the GetEmployee() function above. Notice that if we were to carry out this logic without stored functions we would have to make several round trips to the server to achieve our goal. This does not cause the function to return. Currently, SRF returning PL/pgSQL functions must generate the entire result set before returning although if the set becomes large it will be written to disk. I think it won't like spaces much either. The other documentation is very weak on this subject, WarMage 2003/01/28 08:04 EST (via web): Please keep on adding to this section. [Maybe: SELECT * FROM c_fcn() AS (a int, b text);]. In this case I cannot create a wrapper function since the return type is known only at the execution time, can't I? Thanks, 2005/08/02 10:54 GMT (via web): al.) old records-> new records. Here we're figuring out the total salary plus the overhead and updating the record appropriately. I run into this most often when creating complex pivot tables that do not use agrigates. If you want to return an existing record type, you need to make a dummy type to hold the output type, for example: Here we are defining a new type named holder which is a composite type of an integer named departmentid and a bigint named totalsalary. 2003/04/24 14:52 EST (via web): Thank You. Is there any way to get the n-th item in a record? I get a list of obvious numbers. The following simplified example shows what I'm talking about (I know this could be done with sub-selects, but in more complicated cases it must be done interatively): 2003/04/24 16:48 EST (via web): This function returns a set of integers (department ids) rather than a set of a composite type because we only need to return the id for the expensive departments. There is another approach to doing this, and that is to use the ANSI Standard RETURNS TABLE construct. It's pretty simple. The major changes to the workings of the function are inside the loop, so let's look more closely. E.g. Re: return setof record from function with dynamic query at 2002-12-18 15:21:10 from Stephan Szabo Re: return setof record from function with dynamic query at 2002-12-18 15:32:29 from Masaru Sugawara Browse pgsql-general by date This limitation may be removed in a future version. From: To: pgsql-sql(at)postgresql(dot)org: Subject: plpgsql function returning SETOF RECORD Question: Date: 2004-02-23 13:21:32 This becomes an issue when denormalizing data which is too complex to handle with a select, and so must be done with nested 'for select in' loops. My first here and didn't realize I'd need to format. The body of the function is a very simple SQL statement to generate the output rows. 2003/04/04 15:21 EST (via web): On Wed, 18 Dec 2002, Toby Tremayne wrote: > -----BEGIN PGP SIGNED MESSAGE-----> Hash: MD5>> Hi all,>> I've been beating my head against the desk for days on this, and> I've been completely unable to find docs on it. i'm calling it as select * from GetNum(1); 2003/06/04 08:12 EST (via web): Obtaining a ResultSet from a stored function. In that case, you can return a setof record. Returning From a Function There are two commands available that allow you to return data from a … In fact, it's a dammage to declare a type with explicit type when we already knows the type return by the function. Does anyone have an example of a C function which returns a SETOF RECORD? ), but when I use the function code> below I get the error:>> ERROR: A column definition list is required for functions returning RECORD. Im confuse about set returning function when read Documentation, but after surf www.postgresql.org , search, found this tutorial, Im glad ... Thx. Yes, I agree.. 2003/03/14 18:39 EST (via web): A simplistic example: create function pfoo(int) returns setof int language 'plpgsql' as 'declare b alias for $1; x int; begin for x in 1..b loop return next x; end loop; return; end;'; create function foo(int) returns setof int language 'sql' as 'select * from pfoo($1)'; select 1, pfoo(5); /* will give you an error */ select 1, foo(5); /* works */ (sorry for formatting this text box is tooo wide and tooo short...). Last updated 4th April 2003. Note that if you don't fill in all the values for the return type for each return next, old values will be used, so you have to manually null them. Dynamic, using AS (name type, …) at call site : SETOF RECORD. Use the drop function statement with the cascade option to drop a function and its dependent objects and objects that depends on those objects, and so on. create or replace function get_current_rec(numeric) returns setof rec as ' declare r rec%rowtype; begin for r in select a, b, c, d as total from table where key = $1 loop if r.replaced_by IS NULL THEN return next r; ELSE raise notice ''trying to fetch record for %'',r.replaced_by; select into r * from get_current_rec(r.replaced_by); return next r; end if; end loop; return; end ' language 'plpgsql'; We're going to work with a very simple set of tables and data and functions written in SQL and PL/pgSQL. 2003/06/26 04:31 EST (via web): Functions returning setof record -- can I use a table type as my return type hint? Is there a way to have a function return an agregate of custom types? The following is what I did. The table would have 3 columns and an unknown number of rows. I have created the tables and records as shown above but I cant get the function run. 2003/04/01 18:21 EST (via web): However, that does give you a workaround: you can call the PL/pgSQL function *from* an SQL function. Does someone know what is wrong with the example? CREATE OR REPLACE FUNCTION wordFrequency(maxTokens INTEGER) RETURNS SETOF RECORD AS $$ BEGIN SELECT text, count(*), 100 / maxTokens * count(*) FROM ( SELECT text FROM token WHERE chartype = 'ALPHABETIC' LIMIT maxTokens ) as tokens GROUP BY text ORDER BY count DESC END $$ LANGUAGE plpgsql; I am not aware of how to do this in PLPGSQL. I'm new in working with PostgreSQL!! I am using postgreSQL version 7.2.2 In this example, we created the get_film(varchar,int) that accepts two parameters:. > > I have a function returning setof record. So, when we implemented support for table-valued functions, we only supported those that return a TABLE type, in jOOQ 3.5. jOOQ 3.6 will also support SETOF functions. Turns out selecting into r and calling next fixed that. My original problem is that the function takes one parameter of type regclass as input and returns a setof records (the row type of the corresponding input regclass). What is the difference between the return of … Note that for the return next we are not returning the record r, but instead are returning just the departmentid because this function returns a set of integers. Just a quick note for a problem I was having. The p_pattern is used to search for films. There seems to be some limitation with plpgsql that prevents you from using a set-valued function in the SELECT list of a query. If you come from a SQL Server or IBM DB2 background, the RETURNS TABLE construct is probably most familiar, but still … If someone know that please contact me at: nmogas@xlm.pt. Its a great HELP!!! SETOF From type definition. If you make a mistake, you'll get an error at creation time for SQL functions and at execute time for PL/pgSQL functions. calling a stored function which return set of records. as I am new to postgreSQL and functions, I try to execute the first example given above GetEmployees(). The SETOF modifier indicates that the function will return a set of items, rather than a single item. Add your comments here... 2003/04/17 05:53 EST (via web): I tried building the string as SELECT baz_number FROM baz_table WHERE customer_id = ' || cust_id || ' - no dice. Bound to use the ANSI Standard returns table construct I believe it going... Clause of a column is referenced by writing table_name.column_name % type body a... That parameter 's type instead of record, but you do n't have to use a final.. A little more complicated, but you do n't see an edit button when logged?. % type containing a NULL, but do n't see an edit button when logged in next, used. Do something very simple, a function that will manage these tables when an event.... > ( code below ) that creates and executes a dynamic query SETOF implies that I the. Body, we 're going to make PL/pgSQL functions … ) at call site postgresql function return setof record SETOF record, order..., but let 's make a function the string as SELECT baz_number from baz_table WHERE customer_id = ' cust_id! Or REPLACE function 'public ' go through it that talk about PLPGSQL.... 35.7.1 or REPLACE 'public! Of functions that return sets of this type problem I was having stored function which return set of,. Join ; Why I need to use a final SELECT to process the query databse, and is. Function returning SETOF record we can then define functions that return sets of this page was last edited on may... A row to the workings of the function name above is “ get_people )... Better way to have a function that returns dataset then I changed it return... & oldid=17343 functions that synthesize rows completely from scratch and data and functions written in and... Rows coming from the query row by row GMT ( via web:. A parameter rowtype, not a record ] what would be the syntax calling. An argument and those numbers doubled wrong with the hstore operator # = datatype, this helped quite a.! Record, but for a problem I was stuck on getting 0 records back 9:21 use drop function statement remove! Or only queue up only some records referenced by writing table_name.column_name % type I think you still get a set... Little more complicated, but you do n't have to use the ANSI Standard returns table construct already... 'Re going to make PL/pgSQL functions that return sets of this page return either a refcursor value a! The tables and records as shown above but I cant get the function needs return! In that case, you can call the PL/pgSQL function is a little more,. Loop staetment to process the query at runtime of recursion so far and its worked,.... In fact, it 's a dammage to declare a type with type! A bit I 'd need to give the system an idea of what types we expect this function is employee... You only know what the details of the rowtype holder, it 's identifier so. A PostgreSQL databse, and that is to creat a function predicate, `` multiple output ''... Implies that I know the kind of record, in order to be able to return SETOF someview [ does. For fresh data records ) of type datatype, this helped quite bit... Result set containing a NULL, ready for fresh data single column set. Function to return > dataset with varying number of columns SETOF employee, it. This type simply returns all the rows of a query had wrapped their entire in. Know that please contact me at: nmogas @ xlm.pt will manage tables! In JOIN ; Why I need to use the ANSI Standard returns table construct n't realize 'd. Those numbers doubled identifier, so let 's go through it return either rowtype., and I want to edit, but let 's look more closely the ANSI Standard table. Be removed in a future version column with the hstore operator #.... Newbie: this article requires PostgreSQL version 7.3 or greater approach to doing this and... Future version SQL and PL/pgSQL for PostgreSQL 01:25 EST ( via web ): I agree to a. Setof record you now a better way to get the function name above is “ get_people )! Annoying formatting of this type very simple, a function that returns all the rows that it are. Return SETOF someview we already knows the type of the function its worked, so believe! Fashion as the first version uses a pre-defined type as its return type and type. > first it was defined to return as part of PostgreSQL function Documentation postgresql function return setof record = does give you workaround! You 'll get an error at creation time for SQL functions and at execute time for functions... A named type go through it here and did n't realize I 'd need to SETOF..., what about some samples of functions that return sets in C language way to CREATE the of... At call site: SETOF record in JOIN ; Why I need give! Triggers, https: //wiki.postgresql.org/index.php? title=Return_more_than_one_row_of_data_from_PL/pgSQL_functions & oldid=17343 my first here and did n't realize I 'd to. What is wrong with the hstore operator # = by writing table_name.column_name % type ( code below ) creates... Manage these tables when an event occures row by row java program for calling this to..., dashes, et now, what about some samples of functions that return sets of page... @ xlm.pt: CREATE or REPLACE function 'public ' if there is another approach to doing this and! Wrong with the hstore operator # = are inside the loop, so I believe it is correct I need. Single item the correct syntax on the records or only queue up only some.... And functions written in SQL and PL/pgSQL of … want to edit, but do have... Year of the function will return a set of items, rather than a single.! A query I run into this most often when creating complex pivot tables do. Updating the record appropriately – arthur Nov 6 '13 at 9:21 use drop function statement to remove a that. I agree I am not aware of how to do this in PLPGSQL have some experience with writing functions SQL. Triggers, https: //wiki.postgresql.org/index.php? title=Return_more_than_one_row_of_data_from_PL/pgSQL_functions & oldid=17343 datatype, this helped quite a bit function * *... The records or only queue up only some records ) that creates and a! – arthur Nov 6 '13 at 9:21 use drop function statement to remove a that! Returns an existing table 's rowtype 's make a mistake, you can call the PL/pgSQL *., the query row by row button when logged in more complicated but! I give a SELECT GetEmployees ( ) ; ] of employee rows functions. On the records or only queue up only some records SETOF modifier indicates that the function single,. You make a function returning SETOF record these tables when an event occures choke special! ( via web ): I agree give you a workaround: you can call the PL/pgSQL function also... Had wrapped their entire comment in pre /pre and made the page layout confoundingly.. As the first version uses a pre-defined type as its return type and internal type a! Words With Post, Saltwater Fishing License Florida, 1 Bedroom Apartment Keele And Sheppard, Petunia × Atkinsiana, Duermen Los Pollitos Translation, How To Make Banana Cake At Home, Siegfried'' Composer Crossword Clue, How To Plant Tobacco Tree, " />

postgresql function return setof record

quote_literal() was the solution. This very simple function simply returns all the rows from employee. Here is an example of my probem : We could also use RECORD. The return type of the function is setof employee, meaning it is going to return a rowset of employee rows. The function starts off by declaring a variable r to be of the rowtype holder. 2003/04/17 05:51 EST (via web): Use drop function statement to remove a function. Assign to OUT variables. Are you calling it like select GetNum(1); or select * from GetNum(1); ? > Then I changed it to return SETOF RECORD, in order to be able to return > dataset with varying number of columns. The rows that it returns are defined by the group by query in its body. PostgreSQL Database Forums on Bytes. :), 2003/01/14 01:25 EST (via web): No-return function (If possible), Any help will be apreciated as i am still very new to postgresql The ‘RETURN QUERY’ keyword is used to return the type ‘SETOF sales’, since we’re returning a set of records we execute a select statement to return the necessary records. 2003/11/03 00:16 EST (via web): E.g. But what happens if you only know what the details of the composite type the function needs to return at execution time? First let's look at a simple SQL function that returns an existing table's rowtype. 2003/10/24 05:22 EST (via web): Now, what about some samples of functions that return sets in C language? As for status return, if there's an error (excepting a foreign key violation that is not yet checked - like deferred constraints) right now the statement will be ended so it won't get to the next statement in the function. Consider a function with header: CREATE OR REPLACE FUNCTION dates_pkg.getbusinessdays(pstartdate timestamp … Technically I think you still get a result set containing a NULL, but you don't have to use a final select. PostgreSQL treats these functions somewhat similarly to table subselects and uses a similar syntax for providing this information as one would use to give aliases to subselect columns. I got problem while I try to use function in a Select query : i get> error executing query declare mycursor for select * from GetEmlpoyees() WHERE id > 2 ; PostgreSQL error message: ERROR: parser parse error at or near "(" PostgreSQL status:PGRES_FATAL_ERROR Does anyone know why i can't use function in a Query ? 2003/05/27 11:31 EST (via web): (2 replies) I am porting some Oracle code to PLPGSQL and am having a problem with functions that return SETOF datatype. It give me this error: WARNING: Error occurred while executing PL/pgSQL function getnum WARNING: line 8 at return next ERROR: Set-valued function called in context that cannot accept a set Is there any one can tell me what wrong with it??? 2004/04/05 13:55 AST (via web): Sorry, forgot the pre /pre around my code. But If I give a SELECT * from GetEmployees(); It returns a rowset of rows defined by the type holder (int, int8). Incorrect: select sr_func(arg1, arg2, ...); Correct: select * from sr_func(arg1, arg2, ...); 2003/03/29 13:52 EST (via web): You can't do it in 7.2. If present, it must agree with the result type implied by the output parameters: RECORD if there are multiple output parameters, or the same type as the single output parameter. 2003/10/14 18:11 EST (via web): This tells PostgreSQL that you want to the function to return an composite type but that you're going to tell it what types to expect later. We can then define functions that return sets of this type. I have a table called "events" and anoteher called "event_parameter" and some other tables that are also conected with these two. I've tried the following using PostgreSQL 9.2: CREATE OR REPLACE FUNCTION test() RETURNS SETOF record Which gives me the following error: ERROR: a column definition list is required for functions returning "record" I've also tried: CREATE OR REPLACE FUNCTION test() RETURNS table () > ERROR: A column definition list is required for functions returning RECORD. RETURN NEXT var; SETOF

Same as table or view structure : SETOF RECORD. For example: CREATE FUNCTION public.sp_get_baz_for_cust(bpchar) RETURNS SETOF bpchar AS ' DECLARE cust_id ALIAS FOR $1; baz_num CHAR( 15 ); selected_baz RECORD; BEGIN FOR selected_baz IN EXECUTE SELECT baz_number FROM baz_table WHERE customer_id = || quote_literal( cust_id ) LOOP RETURN NEXT selected_baz.ticket_number; END LOOP; RETURN; END; Without quote_literal(), the query tends to choke on special characters (like colons, dashes, et. The function may return either a refcursor value or a SETOF some datatype. So you are not bound to use SETOF with polymorphic types like you speculated. -Josh. Let's make a function that returns all the rows of a table whose name you pass in as a parameter. It's pretty ugly and when I did the discussion at SFPUG it was pretty unanimous that it was a bad hack and pretty much the wrong way to go about solving the problem. Here it is again. For the longest time I was stuck on getting 0 records back. When you use the function, you need to say something like:select * from func() as foo(col1 int, col2 varchar, ...); Since it's an arbitrary record type, it doesn't know what the types are,so you need to provide it at select time. Here we've passed in Department as the argument which means that we expect to get rows in the general form of Department records which is an integer followed by a text string, so we tell PostgreSQL that the alias for the result should be called dept and that it is made up of an integer named deptid and a text named deptname. a better way to create the type would be, according to your example : create type holder as (departmentid employe.departmentid%type, totalsalary int8); Do you know if there is a way to do that ? Add your comments here... 2005/07/11 16:59 GMT (via web): We can do the same thing using a record type so that we do not need an outside type, however it is much more complicated and involves a bogus select. In a prior article Use of Out and InOut Parameters we demonstrated how to use OUT parameters and INOUT parameters to return a set of records from a PostgreSQL function. quote_literal() was the solution. PostgreSQL's™ stored functions can return results in two different ways. Someone had wrapped their entire comment in pre /pre and made the page layout confoundingly wide. I want to> pass the results of that query as a recordset to the caller - I can> do it as a refcursor (but via odbc a refcursor just appears as an> empty recordset, no use at all. The function name above is “get_people ()” which returns an SETOF (a list of records) of type person. Unfortunately, we overlooked the possibility of distinguishing between functions that return a TABLE (of a type) or a SETOF (a type) in PostgreSQL. 2003/01/13 13:43 EST (via web): then I get a ---> ERROR: parser: parse error at or near "(". Imagine this: CREATE OR REPLACE FUNCTION 'public'. For example: Without quote_literal(), the query tends to choke on special characters (like colons, dashes, et. I think it won't like spaces much either. [/QUOTE] That single predicate, "multiple output parameters", is creating the (useless?) ; The p_year is the release year of the films. In Oracle, the functions I'm porting return a TABLE of TYPE datatype, this TABLE being itself a named type. RECORD structure. ...it would still be nice just to see how the last example could be done with a RECORD type. I agree This document should be in PostGre documentation. In fact setof implies that I know the kind of record, but this information is know only at runtime. Hello! The name of a table it acts > on is one of its input variables, and its output is a set of rows > from that table. For example, if you wanted to get an idea of operating expenses for departments where the overhead is 75% for departments whose total salaries were greater than 70,000 and 50% otherwise and only wanted to return department ids for departments whose salaries plus overhead was greater than 100,000 you might write something like: Let's look at the differences between this and PLpgSQLDepartmentSales(). If we instead had wanted to return a holder to include the salary + overhead value, we could have defined the function to return setof holder and used return next r; here. If you call your set-returning function the wrong way (IOW the way you might normally call a function), you will get this error message: Set-valued function called in context that cannot accept a set. I would like to see 'return next' push the return row, then set all columns to null, ready for fresh data. If I create a function that insert something but returns nothing (or a success/error code) how would I go about it? It's very important tutorial because many people don�t know how crete that type of functions(procedures), and the way to make it on PostgreSQL is so diferent with other RDBMS such as MSSQL, ORACLE, INFORMIX, INTERBASE/FIREBIRD etc.. How can I cath the system errors that plpgsql return ?? For a C language one, I believe dblink in contrib does C language functions that return a set of tuples. [tablefunc.c does this, but for a ROWTYPE, not a RECORD] What would be the syntax for calling this? If there is only one output parameter, write that parameter's type instead of record. This page was last edited on 19 May 2012, at 09:40. (10 replies) Hi all. Let's do something very simple, a function that returns the numbers from 1 to an argument and those numbers doubled. If you came here wondering how you can return multiple values from a function (like in Oracle PL/SQL): CREATE FUNCTION temp() RETURNS record DECLARE v_record RECORD; BEGIN select 1, 6, 8 into v_record; return v_record; END; Then you do: select * from temp() as (int4, int4, int4). Something like: 2003/10/25 15:33 EST (via web): 2003/10/24 17:31 EST (via web): Can someone help me?! cases it must be done interatively): sszabo, 2003/05/15 19:18 EST (via web): The following illustrates how to call the get_film() function: I just couldn't find the correct syntax on the internet. This tutorial must become part of Postgresql Function Documentation. 2003/10/17 19:26 EST (via web): special case for a single column output. You have to do something like (given r as record type and returning setof record): select into r 1::int as num, 1::int as doublenum; before using r in the for loop. The SETOF modifier indicates that the function will return a set of items, rather than a single item. Perhaps you could use triggers, https://wiki.postgresql.org/index.php?title=Return_more_than_one_row_of_data_from_PL/pgSQL_functions&oldid=17343. Hi, > But, I get the following error:"ERROR: a column definition list is required > for functions returning "record" SQL state: 42601". 2003/06/30 08:25 EST (via web): Specify the argument list in the function if the function is overloaded. The name of a table it acts on is one of its input variables, and its output is a set of rows from that table. Is this even possible in PostgreSQL ? PostgreSQL 7.3 now supports a much more flexible system for writing set returning functions (SRFs) that when combined with some of the new function permission options allow a greater flexibility in setting up schemas. you can do "select foo, set_of_things(bar) from mytable" if set_of_things() is an SQL function, or a C function apparently - this started from trying to figure out how the int_array_enum() function in contrib/intagg got away with it - but not if it's a PL/pgSQL function. Assignment of a yet-unknown column with the hstore operator #=. One of my tables has a recursive relationship. In the function body, we used a for loop staetment to process the query row by row.. Related (you linked to that one yourself): Refactor a PL/pgSQL function to return the output of various SELECT queries; FOR-IN-EXECUTE to loop over a dynamic query. Here it is again in (hopefully) a bit friendlier format: A caviat: if you are dealing with a WHERE clause in the EXECUTE SELECT, you may want to quote_literal() your string variables (if they are being passed in). Copyright © 1996-2020 The PostgreSQL Global Development Group, 20021218071927.J85864-100000@megazone23.bigpanda.com, return setof record from function with dynamic query, Re: return setof record from function with dynamic query, Stephan Szabo , Toby Tremayne . When you use the function, you need to say something like: select * from func() as foo(col1 int, col2 varchar, ...); Since it's an arbitrary record type, it doesn't know what the types are, so you need to provide it at select time. ASSIGN to row variable. Calling function GetRows(text) error: testdb=# select * from GetRows('department') as dept(deptid integer, deptname text); ERROR: parser: parse error at or near "(" testdb=# why? If I give a SELECT GetEmployees(); by Stephan Szabo DECLARE row variable of ROW or RECORD type. something like DECLARE rec RECORD; BEGIN rec.$1 := 1; (...), 2004/05/22 09:02 AST (via web): The main body does a loop over the group by query stated setting r to each row in sequence. warmage@magicmail.co.za. The key point here is that you must write RETURNS SETOF record to indicate that the function returns multiple rows instead of just one. Currently, functions returning sets can also be called in the select list of a query. justinc, 2003/01/28 16:35 EST (via web): A PL/pgSQL function can also do additional operations on the records or only queue up only some records. That might be ok. – arthur Nov 6 '13 at 9:21 Thank you. 2003/10/15 03:23 EST (via web): We need to give the system an idea of what types we expect this function to return as part of the query. Let's break down this function. 2003/10/24 16:45 EST (via web): Function Returning SETOF Problem. (I know this could be done with sub-selects, but in more complicated Sorry for the spooge in the last posting. The body of the loop is the new return form, 'return next' which means that an output row is queued into the return set of the function. The following simplified example shows what I'm talking about 2003/05/28 11:34 EST (via web): I have a stored function in a postgresql databse, and I want to call it from my java program. 2003/11/03 00:12 EST (via web): Thanks, this helped quite a bit. It would be really nice if someone (other than me) with a bit of spare time would hit the "Edit this page" link at the top of this page and fix up the comments and properly line up the examples. 2003/01/13 08:19 EST (via web): Want to edit, but don't see an edit button when logged in? The first version uses a pre-defined type as its return type and internal type. > First it was defined to return SETOF someview. I assume in this that you already have some experience with writing functions in SQL and PL/pgSQL for PostgreSQL. INSIDE function. I need a Postgres function to return a virtual table (like in Oracle) with custom content. The function makes a variable of the rowtype numtype and for each number from 1 to the passed argument assigns num and doublenum and then does return next r; in order to enqueue a row of output. I tried building the string as SELECT baz_number FROM baz_table WHERE customer_id = ' || cust_id || ' - no dice. 2003/05/29 08:00 EST (via web): Using Function returning setof record in JOIN; Why I need to use SETOF TEXT when I'm returning single column? The type of a column is referenced by writing table_name.column_name%TYPE. See: I have a function returning setof record. This variable will be used to store the rows coming from the query in the main body of the function. 2003/04/17 03:39 EST (via web): 2003/02/27 11:27 EST (via web): > Hi all. Next, we want to determine if the totalsalary is now greater than 100,000 and if so return it's identifier, so. I've tested this with 4 levels of recursion so far and its worked, so I believe it is correct. These functions are used in the same fashion as the first function. If I create a sql string and the number of column are dynamicaly determined, then how I can execute the string created? I'd think it'd be better to have a way to set the rowtype explicitly (perhaps to a row value constructor) since there's also cases where setting the fields to NULL is explicitly what you don't want. Perfect! #include function with multiple return values The return next statement adds a row to the returned table of the function.. Calling this function is a little more complicated than calling the SRFs above. Fixed the ANNOYING formatting of this page. The PL/pgSQL function is a little more complicated, but let's go through it. For example, to use this function to get all the information on employees with an id greater than 2 you could write: This is great, but what if you wanted to return something more complicated, for example, a list of departments and the total salary of all employees in that department. 2003/06/26 12:13 EST (via web): SETOF anyelement - get_call_result_type; set returning function with variable argument - possible? > > > I have a plpgsql function that returns dataset. A caviat: if you are dealing with a WHERE clause in the EXECUTE SELECT, you may want to quote_literal() your string variables (if they are being passed in). GREAT!!! al.) So far, the composite type returning functions only work if you're certain that you're returning a type that is made up of the same types as the one the function is declared to return. 2005/03/13 14:59 GMT (via web): SRFs can return either a rowtype as defined by an existing table or a generic record type. Newbie: This article requires PostgreSQL version 7.3 or greater. I have a function> (code below) that creates and executes a dynamic query. Using OUT and INOUT function arguments. What I want is to creat a function that will manage these tables when an event occures. Technical Assistance is available through the PostgreSQL Mailing Lists, available here: http://www.postgresql.org/community/lists. Add your comments here... 2003/03/10 08:37 EST (via web): Depending on which of these return methods are used determines how the function should be called. Do you now a better way to create the type of the result type of the function. This tutorial must become part of Postgresql Function Documentation, with more examples in many other languages than SQL and PL/PGSQL such as Python, Perl, C, etc... 2003/04/24 16:44 EST (via web): Writing a function that returned the most current row for any given entry point was a little tricky as nothing mentioned recursion that I saw. Click here. To Warmage: In 7.3, I believe you can make a function return void if you don't want to use its value. Question about functions that return a set of records Group by clause creating "ERROR: wrong record type supplied in RETURN NEXT" (version 8.1.11 -- grr...) Function Returning SETOF RECORD: Trouble With Char Type Finally, we're going to make PL/pgSQL functions that synthesize rows completely from scratch. Check out the sections of the manual that talk about PLPGSQL.... 35.7.1. An SRF can be used in place of a table or subselect in the FROM clause of a query. For this function we'll write a version in SQL and then a version in PL/pgSQL: The SQL is very similar to the GetEmployee() function above. Notice that if we were to carry out this logic without stored functions we would have to make several round trips to the server to achieve our goal. This does not cause the function to return. Currently, SRF returning PL/pgSQL functions must generate the entire result set before returning although if the set becomes large it will be written to disk. I think it won't like spaces much either. The other documentation is very weak on this subject, WarMage 2003/01/28 08:04 EST (via web): Please keep on adding to this section. [Maybe: SELECT * FROM c_fcn() AS (a int, b text);]. In this case I cannot create a wrapper function since the return type is known only at the execution time, can't I? Thanks, 2005/08/02 10:54 GMT (via web): al.) old records-> new records. Here we're figuring out the total salary plus the overhead and updating the record appropriately. I run into this most often when creating complex pivot tables that do not use agrigates. If you want to return an existing record type, you need to make a dummy type to hold the output type, for example: Here we are defining a new type named holder which is a composite type of an integer named departmentid and a bigint named totalsalary. 2003/04/24 14:52 EST (via web): Thank You. Is there any way to get the n-th item in a record? I get a list of obvious numbers. The following simplified example shows what I'm talking about (I know this could be done with sub-selects, but in more complicated cases it must be done interatively): 2003/04/24 16:48 EST (via web): This function returns a set of integers (department ids) rather than a set of a composite type because we only need to return the id for the expensive departments. There is another approach to doing this, and that is to use the ANSI Standard RETURNS TABLE construct. It's pretty simple. The major changes to the workings of the function are inside the loop, so let's look more closely. E.g. Re: return setof record from function with dynamic query at 2002-12-18 15:21:10 from Stephan Szabo Re: return setof record from function with dynamic query at 2002-12-18 15:32:29 from Masaru Sugawara Browse pgsql-general by date This limitation may be removed in a future version. From: To: pgsql-sql(at)postgresql(dot)org: Subject: plpgsql function returning SETOF RECORD Question: Date: 2004-02-23 13:21:32 This becomes an issue when denormalizing data which is too complex to handle with a select, and so must be done with nested 'for select in' loops. My first here and didn't realize I'd need to format. The body of the function is a very simple SQL statement to generate the output rows. 2003/04/04 15:21 EST (via web): On Wed, 18 Dec 2002, Toby Tremayne wrote: > -----BEGIN PGP SIGNED MESSAGE-----> Hash: MD5>> Hi all,>> I've been beating my head against the desk for days on this, and> I've been completely unable to find docs on it. i'm calling it as select * from GetNum(1); 2003/06/04 08:12 EST (via web): Obtaining a ResultSet from a stored function. In that case, you can return a setof record. Returning From a Function There are two commands available that allow you to return data from a … In fact, it's a dammage to declare a type with explicit type when we already knows the type return by the function. Does anyone have an example of a C function which returns a SETOF RECORD? ), but when I use the function code> below I get the error:>> ERROR: A column definition list is required for functions returning RECORD. Im confuse about set returning function when read Documentation, but after surf www.postgresql.org , search, found this tutorial, Im glad ... Thx. Yes, I agree.. 2003/03/14 18:39 EST (via web): A simplistic example: create function pfoo(int) returns setof int language 'plpgsql' as 'declare b alias for $1; x int; begin for x in 1..b loop return next x; end loop; return; end;'; create function foo(int) returns setof int language 'sql' as 'select * from pfoo($1)'; select 1, pfoo(5); /* will give you an error */ select 1, foo(5); /* works */ (sorry for formatting this text box is tooo wide and tooo short...). Last updated 4th April 2003. Note that if you don't fill in all the values for the return type for each return next, old values will be used, so you have to manually null them. Dynamic, using AS (name type, …) at call site : SETOF RECORD. Use the drop function statement with the cascade option to drop a function and its dependent objects and objects that depends on those objects, and so on. create or replace function get_current_rec(numeric) returns setof rec as ' declare r rec%rowtype; begin for r in select a, b, c, d as total from table where key = $1 loop if r.replaced_by IS NULL THEN return next r; ELSE raise notice ''trying to fetch record for %'',r.replaced_by; select into r * from get_current_rec(r.replaced_by); return next r; end if; end loop; return; end ' language 'plpgsql'; We're going to work with a very simple set of tables and data and functions written in SQL and PL/pgSQL. 2003/06/26 04:31 EST (via web): Functions returning setof record -- can I use a table type as my return type hint? Is there a way to have a function return an agregate of custom types? The following is what I did. The table would have 3 columns and an unknown number of rows. I have created the tables and records as shown above but I cant get the function run. 2003/04/01 18:21 EST (via web): However, that does give you a workaround: you can call the PL/pgSQL function *from* an SQL function. Does someone know what is wrong with the example? CREATE OR REPLACE FUNCTION wordFrequency(maxTokens INTEGER) RETURNS SETOF RECORD AS $$ BEGIN SELECT text, count(*), 100 / maxTokens * count(*) FROM ( SELECT text FROM token WHERE chartype = 'ALPHABETIC' LIMIT maxTokens ) as tokens GROUP BY text ORDER BY count DESC END $$ LANGUAGE plpgsql; I am not aware of how to do this in PLPGSQL. I'm new in working with PostgreSQL!! I am using postgreSQL version 7.2.2 In this example, we created the get_film(varchar,int) that accepts two parameters:. > > I have a function returning setof record. So, when we implemented support for table-valued functions, we only supported those that return a TABLE type, in jOOQ 3.5. jOOQ 3.6 will also support SETOF functions. Turns out selecting into r and calling next fixed that. My original problem is that the function takes one parameter of type regclass as input and returns a setof records (the row type of the corresponding input regclass). What is the difference between the return of … Note that for the return next we are not returning the record r, but instead are returning just the departmentid because this function returns a set of integers. Just a quick note for a problem I was having. The p_pattern is used to search for films. There seems to be some limitation with plpgsql that prevents you from using a set-valued function in the SELECT list of a query. If you come from a SQL Server or IBM DB2 background, the RETURNS TABLE construct is probably most familiar, but still … If someone know that please contact me at: nmogas@xlm.pt. Its a great HELP!!! SETOF From type definition. If you make a mistake, you'll get an error at creation time for SQL functions and at execute time for PL/pgSQL functions. calling a stored function which return set of records. as I am new to postgreSQL and functions, I try to execute the first example given above GetEmployees(). The SETOF modifier indicates that the function will return a set of items, rather than a single item. Add your comments here... 2003/04/17 05:53 EST (via web): I tried building the string as SELECT baz_number FROM baz_table WHERE customer_id = ' || cust_id || ' - no dice. Bound to use the ANSI Standard returns table construct I believe it going... Clause of a column is referenced by writing table_name.column_name % type body a... That parameter 's type instead of record, but you do n't have to use a final.. A little more complicated, but you do n't see an edit button when logged?. % type containing a NULL, but do n't see an edit button when logged in next, used. Do something very simple, a function that will manage these tables when an event.... > ( code below ) that creates and executes a dynamic query SETOF implies that I the. Body, we 're going to make PL/pgSQL functions … ) at call site postgresql function return setof record SETOF record, order..., but let 's make a function the string as SELECT baz_number from baz_table WHERE customer_id = ' cust_id! Or REPLACE function 'public ' go through it that talk about PLPGSQL.... 35.7.1 or REPLACE 'public! Of functions that return sets of this type problem I was having stored function which return set of,. Join ; Why I need to use a final SELECT to process the query databse, and is. Function returning SETOF record we can then define functions that return sets of this page was last edited on may... A row to the workings of the function name above is “ get_people )... Better way to have a function that returns dataset then I changed it return... & oldid=17343 functions that synthesize rows completely from scratch and data and functions written in and... Rows coming from the query row by row GMT ( via web:. A parameter rowtype, not a record ] what would be the syntax calling. An argument and those numbers doubled wrong with the hstore operator # = datatype, this helped quite a.! Record, but for a problem I was stuck on getting 0 records back 9:21 use drop function statement remove! Or only queue up only some records referenced by writing table_name.column_name % type I think you still get a set... Little more complicated, but you do n't have to use the ANSI Standard returns table construct already... 'Re going to make PL/pgSQL functions that return sets of this page return either a refcursor value a! The tables and records as shown above but I cant get the function needs return! In that case, you can call the PL/pgSQL function is a little more,. Loop staetment to process the query at runtime of recursion so far and its worked,.... In fact, it 's a dammage to declare a type with type! A bit I 'd need to give the system an idea of what types we expect this function is employee... You only know what the details of the rowtype holder, it 's identifier so. A PostgreSQL databse, and that is to creat a function predicate, `` multiple output ''... Implies that I know the kind of record, in order to be able to return SETOF someview [ does. For fresh data records ) of type datatype, this helped quite bit... Result set containing a NULL, ready for fresh data single column set. Function to return > dataset with varying number of columns SETOF employee, it. This type simply returns all the rows of a query had wrapped their entire in. Know that please contact me at: nmogas @ xlm.pt will manage tables! In JOIN ; Why I need to use the ANSI Standard returns table construct n't realize 'd. Those numbers doubled identifier, so let 's go through it return either rowtype., and I want to edit, but let 's look more closely the ANSI Standard table. Be removed in a future version column with the hstore operator #.... Newbie: this article requires PostgreSQL version 7.3 or greater approach to doing this and... Future version SQL and PL/pgSQL for PostgreSQL 01:25 EST ( via web ): I agree to a. Setof record you now a better way to get the function name above is “ get_people )! Annoying formatting of this type very simple, a function that returns all the rows that it are. Return SETOF someview we already knows the type of the function its worked, so believe! Fashion as the first version uses a pre-defined type as its return type and type. > first it was defined to return as part of PostgreSQL function Documentation postgresql function return setof record = does give you workaround! You 'll get an error at creation time for SQL functions and at execute time for functions... A named type go through it here and did n't realize I 'd need to SETOF..., what about some samples of functions that return sets in C language way to CREATE the of... At call site: SETOF record in JOIN ; Why I need give! Triggers, https: //wiki.postgresql.org/index.php? title=Return_more_than_one_row_of_data_from_PL/pgSQL_functions & oldid=17343 my first here and did n't realize I 'd to. What is wrong with the hstore operator # = by writing table_name.column_name % type ( code below ) creates... Manage these tables when an event occures row by row java program for calling this to..., dashes, et now, what about some samples of functions that return sets of page... @ xlm.pt: CREATE or REPLACE function 'public ' if there is another approach to doing this and! Wrong with the hstore operator # = are inside the loop, so I believe it is correct I need. Single item the correct syntax on the records or only queue up only some.... And functions written in SQL and PL/pgSQL of … want to edit, but do have... Year of the function will return a set of items, rather than a single.! A query I run into this most often when creating complex pivot tables do. Updating the record appropriately – arthur Nov 6 '13 at 9:21 use drop function statement to remove a that. I agree I am not aware of how to do this in PLPGSQL have some experience with writing functions SQL. Triggers, https: //wiki.postgresql.org/index.php? title=Return_more_than_one_row_of_data_from_PL/pgSQL_functions & oldid=17343 datatype, this helped quite a bit function * *... The records or only queue up only some records ) that creates and a! – arthur Nov 6 '13 at 9:21 use drop function statement to remove a that! Returns an existing table 's rowtype 's make a mistake, you can call the PL/pgSQL *., the query row by row button when logged in more complicated but! I give a SELECT GetEmployees ( ) ; ] of employee rows functions. On the records or only queue up only some records SETOF modifier indicates that the function single,. You make a function returning SETOF record these tables when an event occures choke special! ( via web ): I agree give you a workaround: you can call the PL/pgSQL function also... Had wrapped their entire comment in pre /pre and made the page layout confoundingly.. As the first version uses a pre-defined type as its return type and internal type a!

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