plpgsql

In Oracle's PL/SQL I can create a session based global variable with the package definition. With Postgresql's PLpg/SQL, it doesn't seem possible since there are no packages, only independent procedures and functions. Here is the syntax for PL/SQL to declare g_spool_key as a global... CREATE OR REPLACE PACKAGE tox IS g_spool_key spool.key%TYPE := NULL; TYPE t_spool IS REF CURSOR RETURN spool%ROWTYPE; PROCEDURE begin_spool; PROCEDURE into_spool ( in_txt IN spool.txt%TYPE ); PROCEDURE reset_spool; FUNCTION end_spool RETURN t_spool; FUNCTION timestamp RETURN VARCHAR2; END tox; How would I

I need to generate a random number of non duplicated random number in plpgsql. The non duplicated number shall fall in the range of [1,1001]. However, the code generates number exceeding 1001. directed2number := trunc(Random()*7+1); counter := directed2number while counter > 0 loop to_point := trunc((random() * 1/directed2number - counter/directed2number + 1) * 1001 +1); ... ... counter := counter - 1; end loop; If I understand right You need a random number ( 1 to 8 ) of random numbers. The random numbers span 1 to 1001 . The random numbers need to be unique . None shall appear more than once

I'm using PostgreSQL v9.0.1 with Rails (and it's deps) @ v2.3.8 , owing to the use of the fulltext capability of postgres, I have a table which is defined as: CREATE TABLE affiliate_products ( id integer NOT NULL, name character varying(255), model character varying(255), description text, price numeric(9,2), created_at timestamp without time zone, updated_at timestamp without time zone, textsearch_vector tsvector, ); Note the last line, this ensures that active record isn't able to process it with the standard schema dumper, so I have to set config.active_record.schema_format = :sql in .

I am trying to write a loop using PL/pgSQL (PostgreSQL 9.3) function that returns a table. I used RETURN NEXT; with no parameters after each query in the loop, following examples found like plpgsql error "RETURN NEXT cannot have a parameter in function with OUT parameters" in table-returning function , and elsewhere. However, I am still getting an error that says: ERROR: query has no destination for result data HINT: If you want to discard the results of a SELECT, use PERFORM instead. A minimal code example to reproduce the problem is below. Can anyone please help explain how to fix the test

I have a table name table containing two columns foreign_table_name , and foreign_key . Is it possible to write a SELECT query that would JOIN values of this table and the table which name is specified in the column foreign_table_name ? For instance, if we know that all possible targetted foreign tables have a name field, I would like to know if I could write something that would: SELECT table.foo, table.bar, foreign_table.name FROM table JOIN $foreign_table AS foreign_table ON (foreign_table.id = table.foreign_key $foreign_table = table.foreign_table); Any solution using PlpgSQL is of course

Executive summary: PostgreSQL is amazing, but we are facing many issues at work due to the fact that it postpones many checks on PL/pgSQL code until runtime. Is there a way to make it more like Oracle's PL/SQL in this respect ? For example... Try executing this in any Oracle DB: create function foo return number as begin select a from dual; return a; end; Oracle will immediately (i.e. at compile-time !) respond with: [Error] ORA-00904: invalid identifier Now try the semantically equivalent thing in PostgreSQL: CREATE OR REPLACE FUNCTION public.foo () RETURNS integer AS $body$ BEGIN select a;

How to raise error from PostgreSQL SQL statement if some condition is met? I tried code below but got error. CREATE OR REPLACE FUNCTION "exec"(text) RETURNS text AS $BODY$ BEGIN EXECUTE $1; RETURN $1; END; $BODY$ LANGUAGE plpgsql VOLATILE; -- ERROR: syntax error at or near "raise" -- LINE 1: raise 'test' SELECT exec('raise ''test'' ') WHERE TRUE In real application TRUE is replaced by some condition. Update I tried to extend answer to pass exception message parameters. Tried code below but got syntax error. How to pass message parameters ? CREATE OR REPLACE FUNCTION exec(text, variadic )