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25 lines
939 B
Plaintext
25 lines
939 B
Plaintext
USE tpch1;
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drop table if exists user_prop_by_game;
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Warnings:
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Note 1051 Unknown table 'tpch1.user_prop_by_game'
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drop table if exists visit;
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Warnings:
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Note 1051 Unknown table 'tpch1.visit'
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create table user_prop_by_game(cl_id int, last_visit_date date)engine=columnstore;
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create table visit(cl_id int, visit_date date)engine=columnstore;
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insert into user_prop_by_game values (1, now()), (2, now());
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Warnings:
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Note 1265 Data truncated for column 'last_visit_date' at row 1
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Note 1265 Data truncated for column 'last_visit_date' at row 2
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insert into visit values (1, '2010-10-01'), (2, '2010-11-01'), (2,
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'2010-10-01');
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UPDATE user_prop_by_game UPBG, (SELECT cl_id, max(visit_date) AS max_date FROM
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visit GROUP BY cl_id) sub SET UPBG.last_visit_date = sub.max_date WHERE
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UPBG.cl_id = sub.cl_id;
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select * from user_prop_by_game;
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cl_id last_visit_date
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1 2010-10-01
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2 2010-11-01
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drop table if exists user_prop_by_game;
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drop table if exists visit;
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