public inbox for [email protected]
help / color / mirror / Atom feedFrom: jian he <[email protected]>
To: Yugo NAGATA <[email protected]>
Cc: [email protected]
Subject: Re: Incremental View Maintenance, take 2
Date: Sun, 2 Jul 2023 10:38:20 +0800
Message-ID: <CACJufxF-HGe9zLaGaSryeYVq9abz2FyKKtdgghNWktkjnFXOJQ@mail.gmail.com> (raw)
In-Reply-To: <CACJufxHMG9Pmc=W8QMHvk_RwUBABDZNh9HgO4JSQtp1+JUPTJg@mail.gmail.com>
References: <[email protected]>
<[email protected]>
<CACJufxE8Kct5=c1KKi_JgP09WApCk0Myk6=a5xo05_J_mB7hRQ@mail.gmail.com>
<[email protected]>
<CACJufxEA-V+0Fa3Q6xQrFwG6wLs4DsX7E4exdfA=rO-70svmBw@mail.gmail.com>
<CACJufxHZkF_e4JvcXCfaYkOSs0p6-S2SFQk1+iOHdDL6kvngKg@mail.gmail.com>
<CACJufxHtG9h_1V2pr+Hx9amWE9fW0z3dcW9t8yMiBgiSsEjBQA@mail.gmail.com>
<CACJufxHVrgBM1FhM7=df9Cky_uPJ8o3wTjT0iKJWDgmbYPTYqw@mail.gmail.com>
<CACJufxHJQ-Tvxyj1Fy5O3ULXn912bnF1pHfCmLTR72Qcy2_-iQ@mail.gmail.com>
<CACJufxHMG9Pmc=W8QMHvk_RwUBABDZNh9HgO4JSQtp1+JUPTJg@mail.gmail.com>
ok. Now I really found a small bug.
this works as intended:
BEGIN;
CREATE INCREMENTAL MATERIALIZED VIEW test_ivm AS SELECT i, MIN(j) as
min_j FROM mv_base_a group by 1;
INSERT INTO mv_base_a select 1,-2 where false;
rollback;
however the following one:
BEGIN;
CREATE INCREMENTAL MATERIALIZED VIEW test_ivm1 AS SELECT MIN(j) as
min_j FROM mv_base_a;
INSERT INTO mv_base_a select 1, -2 where false;
rollback;
will evaluate
tuplestore_tuple_count(new_tuplestores) to 1, it will walk through
IVM_immediate_maintenance function to apply_delta.
but should it be zero?
reply
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: [email protected]
Cc: [email protected], [email protected]
Subject: Re: Incremental View Maintenance, take 2
In-Reply-To: <CACJufxF-HGe9zLaGaSryeYVq9abz2FyKKtdgghNWktkjnFXOJQ@mail.gmail.com>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by agora; see mirroring instructions
for how to clone and mirror all data and code used for this inbox