parallel aggregation - Numeric is unsupported?
| От | Pavel Stehule |
|---|---|
| Тема | parallel aggregation - Numeric is unsupported? |
| Дата | |
| Msg-id | CAFj8pRBG-fFfCPvSg7wSiJcufgDHCxN7TUNoOc++Ra9f4ZVVJg@mail.gmail.com обсуждение исходный текст |
| Ответы |
Re: parallel aggregation - Numeric is unsupported?
Re: parallel aggregation - Numeric is unsupported? |
| Список | pgsql-hackers |
Hi
is it expected in this moment?Table "public.foo"
Column │ Type │ Modifiers
════════╪═════════╪═══════════
a │ integer │
postgres=# \d foo2
Table "public.foo2"
Column │ Type │ Modifiers
════════╪═════════╪═══════════
a │ numeric │
postgres=# explain select sum(a) from foo;
QUERY PLAN
════════════════════════════════════════════════════════════════════════════════════════
Finalize Aggregate (cost=76498.35..76498.36 rows=1 width=8)
-> Gather (cost=76497.93..76498.34 rows=4 width=8)
Number of Workers: 4
-> Partial Aggregate (cost=75497.93..75497.94 rows=1 width=8)
-> Parallel Seq Scan on foo (cost=0.00..69247.94 rows=2499994 width=4)
(5 rows)
postgres=# explain select sum(a) from foo2;
QUERY PLAN
══════════════════════════════════════════════════════════════════════
Aggregate (cost=179053.25..179053.26 rows=1 width=32)
-> Seq Scan on foo2 (cost=0.00..154053.60 rows=9999860 width=12)
(2 rows)
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