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