Trigger function not working in postgresql - sql

Question

I have tables as follows:
test
address
value
a1
50
table1
address
amount
id
hash
a1
50
2
se2
I am trying to add the amount to a1 when a new insertion of a1 is added to the test table i.e. if a new row is added to test i.e. address = a1 and value = 100 then, i want to update the amount in a1 on table1 table i.e. amount = 50 + 100 = 150 but the value does not get updated.
Here is my trigger implementation:
CREATE OR REPLACE FUNCTION address_trigger()
RETURNS trigger LANGUAGE plpgsql AS $$
BEGIN
UPDATE table1
SET amount = amount + new.value
WHERE NEW.address = table1.address;
RETURN NEW;
end;
$$;
CREATE TRIGGER update_table1
AFTER INSERT
ON "test"
FOR EACH ROW
EXECUTE PROCEDURE address_trigger();
I added the trigger function via query console and the trigger function shows on the database as update_table1 in intellij. then, i insert a new row to test manually INSERT INTO test(address, value) VALUES ('a1',100);. the row gets updated on test but the value is not updated on table1 on reloading. Could someone help me out, what am i doing wrong here?

Answer 1

It works ok for me. Create tables
create table "test"(
address varchar(10),
value int
);
create table table1 (
address varchar(10),
amount int
);
insert into table1
values('abc', 0);
Your trigger
CREATE OR REPLACE FUNCTION address_trigger()
RETURNS trigger LANGUAGE plpgsql AS $$
BEGIN
UPDATE table1
SET amount = amount + new.value
WHERE NEW.address = table1.address;
RETURN NEW;
end;
$$;
CREATE TRIGGER update_table1
AFTER INSERT
ON "test"
FOR EACH ROW
EXECUTE PROCEDURE address_trigger();
Test it
insert into "test"
values ('abc', 10),
('abc', 30);
select *
from table1;
Output
address amount
abc 40