I want to get all the dependencies of a table, I know how to get the index list using sql, but I don't know how to get the list of objects who using a function, for example:
CREATE OR REPLACE FUNCTION reverse_last_64(TEXT) RETURNS TEXT AS $$
SELECT
array_to_string(
ARRAY
( SELECT substring($1, s.i,1) FROM generate_series(length($1), greatest(length($1) - 64 + 1, 1), -1) AS s(i) ),
'');
$$ LANGUAGE SQL IMMUTABLE"
CREATE TABLE Test2(id BIGSERIAL PRIMARY KEY, name varchar(100)) CREATE INDEX idx_test2_name ON test2(reverse_last_64(name) varchar_pattern_ops)
drop function reverse_last_64(TEXT) ;
will show
ERROR: cannot drop function reverse_last_64(text) because other objects depend on it
DETAIL: index idx_test2_name depends on function reverse_last_64(text)
HINT: Use DROP ... CASCADE to drop the dependent objects too.
what I want to get is the list of index(or maybe other function) which using the function using sql.
I hope this will help you:
select * from pg_depend where refobjid = (select oid from pg_proc where proname='reverse_last_64');
