Hi All,
PostgreSQL 7.4.5
assume this script:
---
create table test_table
(id serial,test_value text
) without oids;
insert into test_table
(test_value)
values ('A');
insert into test_table
(test_value)
values ('B');
insert into test_table
(test_value)
values ('C');
insert into test_table
(test_value)
values ('D');
CREATE OR REPLACE FUNCTION test_with_transaction() RETURNS text AS
'declare my_test_record record;
declare my_return_value text;
begin my_return_value := ''''; start transaction; for my_test_record in select * from test_table loop
my_return_value:= my_return_value || my_test_record.test_value; end loop; return my_return_value; commit;
end;' LANGUAGE 'plpgsql' VOLATILE;
CREATE OR REPLACE FUNCTION test_without_transaction() RETURNS text AS
'declare my_test_record record;
declare my_return_value text;
begin my_return_value := ''''; for my_test_record in select * from test_table loop my_return_value := my_return_value
||my_test_record.test_value; end loop; return my_return_value;
end;' LANGUAGE 'plpgsql' VOLATILE;
---
Why does select test_without_transaction();
return this info:
"ABCD" (as should be)
and select test_with_transaction();
returns this error?
ERROR: SPI_prepare() failed on "start transaction"
CONTEXT: PL/pgSQL function "test_with_transaction" line 6 at SQL
statement
I've been investigating the matter in the doc I have, but to no avail.
google was not helpful either.
any suggestion? is this a bug? or the bug resides in my head?
regards,
Riccardo
