plpgsql

I am trying to make a self-managing partition table setup with Postgres. It all revolves around this function but I can't seem to get Postgres to accept my table names. Any ideas or examples of self-managing partition table trigger functions? My current function: DECLARE day integer; year integer; tablename text; startdate text; enddate text; BEGIN day:=date_part('doy',to_timestamp(NEW.date)); year:=date_part('year',to_timestamp(NEW.date)); tablename:='pings_'||year||'_'||day||'_'||NEW.id; -- RAISE EXCEPTION 'tablename=%',tablename; PERFORM 'tablename' FROM pg_tables WHERE 'schemaname'

I'm attempting to write an area of a function in PL/pgSQL that loops through an hstore and sets a record's column(the key of the hstore ) to a specific value (the value of the hstore ). I'm using Postgres 9.1. The hstore will look like: ' "column1"=>"value1","column2"=>"value2" ' Generally, here is what I want from a function that takes in an hstore and has a record with values to modify: FOR my_key, my_value IN SELECT key, value FROM EACH( in_hstore ) LOOP EXECUTE 'SELECT $1' INTO my_row.my_key USING my_value; END LOOP; The error which I am getting with this code: "myrow" has no field "my_key

I have the responsibility of switching our code from sqlite to postgres. One of the queries I am having trouble with is copied below. INSERT INTO group_phones(group_id, phone_name) SELECT g.id, p.name FROM phones AS p, groups as g WHERE g.id IN ($add_groups) AND p.name IN ($phones); The problem arises when there is a duplicate record. In this table the combination of both values must be unique. I have used a few plpgsql functions in other places to do update-or-insert operations, but in this case I can do several inserts at once. I am not sure how to write a stored routine for this. Thanks for

I have a PostgreSQL table of this form: base_id int | mods smallint[] 3 | {7,15,48} I need to populate a table of this form: combo_id int | base_id int | mods smallint[] 1 | 3 | 2 | 3 | {7} 3 | 3 | {7,15} 4 | 3 | {7,48} 5 | 3 | {7,15,48} 6 | 3 | {15} 7 | 3 | {15,48} 8 | 3 | {48} I think I could accomplish this using a function that does almost exactly this, iterating over the first table and writing combinations to the second table: Generate all combinations in SQL But, I'm a Postgres novice and cannot for the life of me figure out how to do this using plpgsql. It doesn't need to be

I've just inherited an old PostgreSQL installation and need to do some diagnostics to find out why this database is running slow. On MS SQL you would use a tool such as Profiler to see what queries are running and then see how their execution plan looks like. What tools, if any, exist for PostgreSQL that I can do this with? I would appreciate any help since I´m quite new with Postgres. Use pg_stat_statements extension to get long running queries. then use select* from pg_stat_statements order by total_time/calls desc limit 10 to get ten longest. then use explain to see the plan... Chris

We have an application, which will delete a row from a table based on user requests. I cannot change the application code. However, I want to insert a row into another table (kinda like a journal log) with information from a few other tables based on information of the row that is being deleted. How do I achieve this within PostgreSQL? Write a trigger function. Something like this: CREATE OR REPLACE FUNCTION trg_backup_row() RETURNS trigger AS $BODY$ BEGIN INSERT INTO other_tbl SELECT (OLD).*, t.other_col -- all columns of from old table -- SELECT OLD.col1, OLD.col2, t.other_col -- alternative

This instruction works: SELECT INTO unsolvedNodes array_agg(DISTINCT idDestination) FROM road WHERE idOrigin = ANY(solvedNodes) AND NOT (idDestination = ANY(solvedNodes)); But I would like to use something this way: SELECT INTO unsolvedNodes array_agg(DISTINCT idDestination), lengths array_agg(length) FROM road WHERE idOrigin = ANY(solvedNodes) AND NOT (idDestination = ANY(solvedNodes)); How to use only one "SELECT INTO" instruction to set multiple variables? In PL/pgSQL you can SELECT INTO as many variables at once as you like directly. You just had the syntax backwards: SELECT INTO

I would like to delete all tables sharing the same prefix ('supenh_agk') from the same database, using one sql command/query. Erwin Brandstetter To do this in one command you need dynamic SQL with EXECUTE in a DO statement (or function): DO $do$ DECLARE _tbl text; BEGIN FOR _tbl IN SELECT quote_ident(table_schema) || '.' || quote_ident(table_name) -- escape identifier and schema-qualify! FROM information_schema.tables WHERE table_name LIKE 'prefix' || '%' -- your table name prefix AND table_schema NOT LIKE 'pg_%' -- exclude system schemas LOOP RAISE NOTICE '%', -- EXECUTE 'DROP TABLE ' || _tbl

I am trying to write a PL/pgSQL function with optional arguments. It performs a query based on a filtered set of records (if specified), otherwise performs a query on the entire data set in a table. For example (PSEUDO CODE) : CREATE OR REPLACE FUNCTION foofunc(param1 integer, param2 date, param2 date, optional_list_of_ids=[]) RETURNS SETOF RECORD AS $$ IF len(optional_list_of_ids) > 0 THEN RETURN QUERY (SELECT * from foobar where f1=param1 AND f2=param2 AND id in optional_list_of_ids); ELSE RETURN QUERY (SELECT * from foobar where f1=param1 AND f2=param2); ENDIF $$ LANGUAGE SQL; What would be