plpgsql

I want to use SELECT INTO to make a temporary table in one of my functions. SELECT INTO works in SQL but not PL/pgSQL. This statement creates a table called mytable (If orig_table exists as a relation): SELECT * INTO TEMP TABLE mytable FROM orig_table; But put this function into PostgreSQL, and you get the error: ERROR: "temp" is not a known variable CREATE OR REPLACE FUNCTION whatever() RETURNS void AS $$ BEGIN SELECT * INTO TEMP TABLE mytable FROM orig_table; END; $$ LANGUAGE plpgsql; I can SELECT INTO a variable of type record within PL/pgSQL, but then I have to define the structure when

Can someone please explain to me why does COMMIT in this function returns EXCEPTION ? DECLARE XNar CURSOR (forDATE Varchar) IS SELECT NARUCENO, ISPORUKA_ID FROM XDATA_NARUDZBE WHERE TO_CHAR(XDATA_NARUDZBE.DATUM, 'DD.MM.YYYY') = forDATE; LastDate DATE; OutResult INTEGER; curNAR NUMERIC; curISP VARCHAR; RXNar RECORD; BEGIN OutResult := 1; SELECT MAX(DATUM) INTO LastDate FROM XDATA_NARUDZBE; FOR RXNar IN XNar(TO_CHAR(LastDate, 'DD.MM.YYYY')) LOOP IF (RXNar.NARUCENO <> 0) AND (RXNar.ISPORUKA_ID = 'R01') THEN UPDATE NARUDZBE SET ISPORUCENO = RXNar.NARUCENO WHERE NARUDZBE.PP_ID = RXNar.PP_ID AND

My code is: SELECT column_name FROM information.SCHEMA.columns WHERE table_name = 'aean' It returns column names of table aean . Now I have declared an array: DECLARE colnames text[] How can I store select's output in colnames array. Is there any need to initialize colnames? Denis de Bernardy There are two ways. One is to aggregate: SELECT array_agg(column_name::TEXT) FROM information.schema.columns WHERE table_name = 'aean' The other is to use an array constructor: SELECT ARRAY( SELECT column_name FROM information.schema.columns WHERE table_name = 'aean') I'm presuming this is for plpgsql. In

I'm trying to test, within a stored procedure, whether a sequence already exists. IF EXISTS SEQUENCE seq_name RAISE EXCEPTION 'sequence % already exists!', seq_name END IF; I have tried several variations of the snippet above without luck. I must be giving Google the wrong terms because I can't seem to find anything on the topic. Any help is appreciated! You should be able query the pg_class table to see if the relname exists. IF EXISTS (SELECT 0 FROM pg_class where relname = '<my sequence name here>' ) THEN --stuff here END IF; The answer from @rfusca works if you're sure that the name could

Given a table name, how do I extract a list of primary key columns and their datatypes from a plpgsql function? The query above is very bad as it is really slow. I would recommend this official version: http://wiki.postgresql.org/wiki/Retrieve_primary_key_columns if schema is needed the query is as follows SELECT pg_attribute.attname, format_type(pg_attribute.atttypid, pg_attribute.atttypmod) FROM pg_index, pg_class, pg_attribute, pg_namespace WHERE pg_class.oid = 'foo'::regclass AND indrelid = pg_class.oid AND nspname = 'public' AND pg_class.relnamespace = pg_namespace.oid AND pg_attribute

I highly doubt I'm doing this in the most efficient manner, which is why I tagged plpgsql on here. I need to run this on 2 billion rows for a thousand measurement systems . You have measurement systems that often report the previous value when they lose connectivity, and they lose connectivity for spurts often but sometimes for a long time. You need to aggregate but when you do so, you need to look at how long it was repeating and make various filters based on that information. Say you are measuring mpg on a car but it's stuck at 20 mpg for an hour than moves around to 20.1 and so on. You'll