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fixed

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Alex
2026-02-01 13:17:20 +03:00
parent 5d31d01875
commit 63f391d689
1 changed files with 4 additions and 1 deletions
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aharlamcev/postgresql/WindowFunctionHomework.sql
+4 -1
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@@ -19,12 +19,15 @@ values (1, 'iPhone 14', 'smartphone', 799, true, 'iphone@apple.com'),
(9, 'Honor Pad X9', 'tablet', 219, true, 'honor@support.com'), (9, 'Honor Pad X9', 'tablet', 219, true, 'honor@support.com'),
(10, 'Dell XPS 13', 'laptop', 1099, false, 'dell@support.com'); (10, 'Dell XPS 13', 'laptop', 1099, false, 'dell@support.com');
alter table products_extended
alter column price type DECIMAL(10, 2)
select * from products_extended select * from products_extended
with email_false as (select * from with email_false as (select * from
( (
select category, name, price, email_support, row_number() over (partition by category order by price desc) as rn select category, name, price, email_support, row_number() over (partition by category order by price desc) as rn
from products_extended where email_support is null) from products_extended where email_support is null) where rn = 1
), ),
email_true as (select * from email_true as (select * from