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SQLize.online is a free online SQL environment for quickly running, experimenting with and sharing code.
You can run your SQL code on top of the most popular RDBMS including MySQL, MariaDB, SQLite, PostgreSQL, Oracle and Microsoft SQL Server.
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create table street ( id serial primary key, title varchar ); create table resident ( id serial primary key, name varchar, fortune bigint, street_id int, constraint fk_resident_street foreign key (street_id) references street(id) ); insert into street (title) values ('first'), ('second'), ('third'), ('fourth'); insert into resident (name, fortune, street_id) values ('Kate', 10, 1), ('John', 100, 1), ('Serg', 200, 2), ('Ann', 20, 2), ('Helen', 30, 3), ('Mik', 400, 4); -- вывести самого богатого жителя на каждой улице(имя, деньги, название улицы) select name from resident where fortune in (select max(fortune) from resident group by street_id)
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MariaDB 11.4
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MariaDB 10 Sakila (ReadOnly)
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MySQL 5.7 Sakila (ReadOnly)
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