set enable_compress_hll = on;
create schema hll_misc;
set current_schema = hll_misc;
create table t_id(id int);
insert into t_id values(generate_series(1,500));
create table t_hll(a int, b hll) with (orientation = column);
insert into t_hll select mod(id, 2) a, hll_add_agg(hll_hash_integer(id)) from t_id group by a;
select a, #b from t_hll order by 1;
drop table t_hll;
create table t_hll(a int, b hll);
insert into t_hll select mod(id, 2) a, hll_add_agg(hll_hash_integer(id)) from t_id group by a;
select a, #b from t_hll order by 1;
drop table t_hll;
select oid, * from pg_proc where proname like 'hll%' order by oid;
select oid, * from pg_type where typname in
('hll', '_hll',
'hll_hashval', '_hll_hashval',
'hll_trans_type', '_hll_trans_type') order by oid;
with type_oids as
(
select oid from pg_type where typname in
('hll', '_hll',
'hll_hashval', '_hll_hashval',
'hll_trans_type', '_hll_trans_type')
)
select oid, * from pg_operator where oprleft in (select * from type_oids)
or oprright in (select * from type_oids)
order by oid;
select * from pg_aggregate where aggtranstype = (select oid from pg_type where typname = 'hll_trans_type') order by 1;
with type_oids as
(
select oid from pg_type where typname in
('hll', '_hll',
'hll_hashval', '_hll_hashval',
'hll_trans_type', '_hll_trans_type')
)
select * from pg_cast where castsource in ( select * from type_oids )
or casttarget in ( select * from type_oids ) order by 1;
drop table t_id;
drop schema hll_misc cascade;
reset current_schema;