Alex
29 lines
701 B
SQL
29 lines
701 B
SQL
select * from users
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select id, name, country from users
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order by name;
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select id, name, country, created_at from users
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where country = 'KZ'
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order by created_at desc;
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select id, name from users
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where email is null;
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select id, name from users
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where email is not null;
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update users
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set email = 'alice@mail.com'
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where name = 'Alice'; -- в моей таблице ни у кого нет email, добавил чтобы посмотреть.
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select id, name, UPPER(email) as email_upper from users;
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select id, name, LOWER(email) as email_lower from users
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where email is not null;
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select id, name, created_at from users
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where created_at > '2024-01-11'
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order by created_at desc
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limit 2;
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