User defined EXCEPTIONs
Using postgreSQL 8.1 on fedora.
Below is a function RowCount_Select(Table_Name) defined that raises
exception (test1) which i intend to catch in test1( ) and raise exception
(test2).
Do we have a way to catch such user defined exceptions? Can someone direct
me to the right resource pages?
create or replace function RowCount_Select(varchar) returns int as $$
DECLARE
res int;
BEGIN
select into res reltuples from pg_class where relkind='r' and
relname=$1;
if not found then
raise exception 'test1';
end if;
return res;
END;
$$ language plpgsql strict;
-- There is no relation by name ' test '
create or replace function test1() returns int as $$
DECLARE
res int;
BEGIN
select into res RowCount_Select('test');
return res;
EXCEPTION
when test1 then
raise exception 'test2';
END;
$$ language plpgsql strict;
ERROR: unrecognized exception condition "test1"
CONTEXT: compile of PL/pgSQL function "test1" near line 11
thanks,
vish
I have a work around, but it would really help if there was a way to define
my own exceptions (for business logic),
Here is the output, for those who would be browsing for it in future,
create or replace function RowCount_Select(varchar) returns int as $$
DECLARE
res int;
BEGIN
select into res reltuples from pg_class where relkind='r' and
relname=$1;
if not found then
raise exception 'testing';
end if;
return res;
END;
$$ language plpgsql strict;
create or replace function test1() returns int as $$
DECLARE
res int;
BEGIN
select into res RowCount_Select('test');
return res;
EXCEPTION
when raise_exception then
raise exception 'test2 # %',SQLERRM;
END;
$$ language plpgsql strict;
DB=# select * from test1();
ERROR: test2 # testing
this does solve my problem of catching my exceptions to a good extent.
Show quoted text
On 3/7/06, vishal saberwal <vishalsaberwal@gmail.com> wrote:
Using postgreSQL 8.1 on fedora.
Below is a function RowCount_Select(Table_Name) defined that raises
exception (test1) which i intend to catch in test1( ) and raise exception
(test2).
Do we have a way to catch such user defined exceptions? Can someone direct
me to the right resource pages?create or replace function RowCount_Select(varchar) returns int as $$
DECLARE
res int;
BEGIN
select into res reltuples from pg_class where relkind='r' and
relname=$1;
if not found then
raise exception 'test1';
end if;
return res;
END;
$$ language plpgsql strict;-- There is no relation by name ' test '
create or replace function test1() returns int as $$
DECLARE
res int;
BEGIN
select into res RowCount_Select('test');
return res;
EXCEPTION
when test1 then
raise exception 'test2';
END;
$$ language plpgsql strict;ERROR: unrecognized exception condition "test1"
CONTEXT: compile of PL/pgSQL function "test1" near line 11thanks,
vish