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77 lines
1.9 KiB
Plaintext
77 lines
1.9 KiB
Plaintext
USE tpch1;
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drop table if exists visit;
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drop table if exists client;
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create table visit (id_client integer,nb_event integer,update_date datetime, visit_date datetime) engine=columnstore;
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create table client (id_client integer,id_event integer,event_date datetime) engine=columnstore;
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insert into visit values (1,0,NULL,"2010-09-08");
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insert into visit values (2,0,NULL,"2010-09-08");
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insert into visit values (2,0,NULL,"2010-09-10");
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insert into visit values (3,0,NULL,"2010-09-08");
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insert into visit values (3,0,NULL,"2010-09-10");
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insert into client values (1,20,"2010-09-07");
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insert into client values (1,21,"2010-09-07");
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insert into client values (1,22,"2010-09-07");
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insert into client values (2,23,"2010-09-07");
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insert into client values (2,24,"2010-09-07");
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insert into client values (2,25,"2010-09-10");
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insert into client values (3,29,"2010-09-10");
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select * from
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visit V,
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(
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SELECT
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CL.id_client,
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COUNT(CL.id_event) as nb_event
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FROM
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client CL
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WHERE
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CL.event_date < "2010-09-10"
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GROUP BY
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CL.id_client
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) Res
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WHERE
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V.visit_date ="2010-09-08"
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AND V.id_client = Res.id_client order by 1, 2, 3;
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id_client nb_event update_date visit_date id_client nb_event
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1 0 NULL 2010-09-08 00:00:00 1 3
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2 0 NULL 2010-09-08 00:00:00 2 2
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UPDATE
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visit V,
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(
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SELECT
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CL.id_client,
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COUNT(CL.id_event) as nb_event
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FROM
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client CL
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WHERE
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CL.event_date < "2010-09-10"
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GROUP BY
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CL.id_client
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) Res
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SET
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V.nb_event = Res.nb_event,
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V.update_date = '2010-12-11'
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WHERE
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V.visit_date ="2010-09-08"
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AND V.id_client = Res.id_client;
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select * from
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visit V,
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(
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SELECT
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CL.id_client,
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COUNT(CL.id_event) as nb_event
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FROM
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client CL
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WHERE
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CL.event_date < "2010-09-10"
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GROUP BY
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CL.id_client
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) Res
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WHERE
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V.visit_date ="2010-09-08"
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AND V.id_client = Res.id_client order by 1, 2, 3;
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id_client nb_event update_date visit_date id_client nb_event
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1 3 2010-12-11 00:00:00 2010-09-08 00:00:00 1 3
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2 2 2010-12-11 00:00:00 2010-09-08 00:00:00 2 2
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drop table if exists visit;
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drop table if exists client;
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