dr0zd
103 lines
1.9 KiB
SQL
103 lines
1.9 KiB
SQL
--task 1
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create table mdrozdov.products (
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product_id Int,
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name String
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)
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engine = MergeTree
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order by product_id
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insert into mdrozdov.products values
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(101, 'iPhone 14'),
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(102, 'Galaxy S22'),
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(103, 'Pixel 7')
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create table mdrozdov.prices (
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product_id Int,
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price Int,
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region String
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)
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engine = MergeTree
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order by product_id
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insert into mdrozdov.prices values
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(101, 999, 'US'),
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(101, 1049, 'EU'),
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(102, 850, 'US'),
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(102, 899, 'CA'),
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(103, 799, 'JP')
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-- 1)
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select
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product_id,
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name,
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price,
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region
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from mdrozdov.products
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any left join mdrozdov.prices
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on mdrozdov.products.product_id = mdrozdov.prices.product_id
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-- 2)
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create table mdrozdov.ticks
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ON CLUSTER clickhouse_cluster (
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time DateTime,
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symbol String,
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price Decimal(10, 2)
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)
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engine = ReplicatedMergeTree(
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'/clickhouse/tables/{shard}/mdrozdov/ticks',
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'{replica}'
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)
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order by (time, symbol)
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insert into mdrozdov.ticks values
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('2025-07-17 10:00:00', 'AAPL', 190.5),
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('2025-07-17 10:01:00', 'AAPL', 191.2),
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('2025-07-17 10:02:30', 'AAPL', 192.0),
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('2025-07-17 10:05:00', 'GOOG', 2850.0)
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create table mdrozdov.orders
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ON CLUSTER clickhouse_cluster (
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time DateTime,
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symbol String,
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size Int
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)
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engine = ReplicatedMergeTree(
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'/clickhouse/tables/{shard}/mdrozdov/orders',
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'{replica}'
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)
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order by (symbol, time)
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insert into mdrozdov.orders values
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('2025-07-17 10:00:30', 'AAPL', 50),
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('2025-07-17 10:02:00', 'AAPL', 75),
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('2025-07-17 10:03:00', 'AAPL', 20),
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('2025-07-17 10:04:00', 'GOOG', 15)
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select
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o.time,
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o.symbol,
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t.price as last_price
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from mdrozdov.orders o
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asof join mdrozdov.ticks t
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on o.symbol = t.symbol and o.time >= t.time
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-- task 3
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select
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user_id,
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name
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from users
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where user_id in (
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select user_id
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from payments
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where amount > 1000
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)
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-- task 4
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select
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bl.user_id,
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u.name,
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bl.event_time,
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bl.event_type
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from big_logs bl
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any left join users u
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using(user_id) |