c9f26183b0
## Use Case
create table t_user(
event_day DATE,
id bigint,
username varchar(20)
)
DISTRIBUTED BY HASH(id) BUCKETS 10
PROPERTIES (
"replication_num" = "1"
);
insert into t_user values("2022-10-26",1,"clz");
insert into t_user values("2022-10-28",2,"zhangsang");
insert into t_user values("2022-10-29",3,"lisi");
create table t_user_pv(
event_day DATE,
id bigint,
pv bigint
)
DISTRIBUTED BY HASH(id) BUCKETS 10
PROPERTIES (
"replication_num" = "1"
);
insert into t_user_pv values("2022-10-26",1,200);
insert into t_user_pv values("2022-10-28",2,200);
insert into t_user_pv values("2022-10-28",3,300);
DROP MATERIALIZED VIEW if exists multi_mv;
CREATE MATERIALIZED VIEW multi_mv
BUILD IMMEDIATE
REFRESH COMPLETE
start with "2022-10-27 19:35:00"
next 60 second
KEY(username)
DISTRIBUTED BY HASH (username) buckets 1
PROPERTIES ('replication_num' = '1')
AS
select t_user.username, t_user_pv.pv from t_user, t_user_pv where t_user.id=t_user_pv.id;
# Licensed to the Apache Software Foundation (ASF) under one # or more contributor license agreements. See the NOTICE file # distributed with this work for additional information # regarding copyright ownership. The ASF licenses this file # to you under the Apache License, Version 2.0 (the # "License"); you may not use this file except in compliance # with the License. You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, # software distributed under the License is distributed on an # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY # KIND, either express or implied. See the License for the # specific language governing permissions and limitations # under the License. # fe-common This module is used to store some common classes of other modules. # spark-dpp This module is Spark DPP program, used for Spark Load function. Depends: fe-common # fe-core This module is the main process module of FE. Depends: fe-common, spark-dpp