Printing run time messages in postgres

Question

Can we use RAISE NOTICE in postgres as equivalent of RAISERROR \'message to display\' WITH NOWAIT in SQL Server, or is there a better way

Answer 1

you can use very simple statement in function everywhere.

DO $$ begin raise notice '%',now(); end; $$;

function for reference:

create or replace function test() RETURNS bool AS '
begin
raise notice ''%'',now();
for i IN 0..50000000  loop
     end loop
     raise notice ''%'',now();
     return true;
end;

LANGUAGE 'plpgsql';

Answer 2

Yes, you can use RAISE NOTICE like below. It's correct the way you are doing.

RAISE NOTICE 'i want to print % and %', var1,var2;

See here for more information https://www.postgresql.org/docs/current/static/plpgsql-errors-and-messages.html

EDIT:

begin
INSERT INTO tbl1 (col1) values (val1);
raise notice 'insert tbl1 done!';
end;

Answer 3

You could also do normal selects without the DO block.

INSERT INTO tbl1 (col1) values (val1);

SELECT 'insert tbl1 done!' as msg;

UPDATE tbl2 set col2='val2' where ...;

SELECT 'update tbl2 done!' as msg;

The tradeoff is that it does add extra clutter to the output, like

UPDATE 1
      msg
-----------------
update tbl2 done!
(1 row)

Answer 4

RAISE NOTICE is part of PL/pgSQL so it's only legal in a function or an anonymous DO block. I guess you could make a function that raises the notice and call that.