task up to arrays

2026-01-29 04:50:55 +07:00
parent 97d55ac267
commit 0e385bd6d0
6 changed files with 420 additions and 0 deletions
@@ -0,0 +1,64 @@
+--page_views table
+	create table page_views (
+		user_id UInt64,
+		url  String,
+		view_time DateTime
+	)
+	Engine = MergeTree
+	Order by (user_id, view_time)
+	Partition by toYYYYMM(view_time)
+	
+	-- users table
+	create table users(
+		id UInt64,
+		name String,
+		updated_at DateTime
+	)
+	ENGINE = ReplacingMergeTree(updated_at)
+	Order by id;
+	
+	-- region_sales table
+	create table region_sales(
+		region String,
+		date Date,
+		sales UInt64
+	)
+	ENGINE = SummingMergeTree
+	Partition by toYYYYMM(date)
+	Order by (region, date)
+	
+	insert into mdrozdov.region_sales (region, date, sales)
+	values ('Russia', '2025-01-14', 30), ('Russia', '2025-01-16', 22), ('USA', '2025-01-14', 1400)
+	OPTIMIZE TABLE mdrozdov.region_sales FINAL
+	
+	-- user_metrics table
+	create table mdrozdov.user_metrics (
+		region String,
+		avg_age_state AggregateFunction(avg, UInt8),
+		active_users_state AggregateFunction(uniq, UInt64)
+	)
+	Engine = AggregatingMergeTree
+	Order by region
+	
+	INSERT INTO mdrozdov.user_metrics
+	SELECT
+	    'Moscow' AS region,
+	    avgState(toUInt8(25)) AS avg_age_state,
+	    uniqState(toUInt64(100)) AS active_users_state
+	UNION ALL
+	SELECT
+	    'Moscow',
+	    avgState(toUInt8(30)),
+	    uniqState(toUInt64(50))
+	UNION ALL
+	SELECT
+	    'SPB',
+	    avgState(toUInt8(20)),
+	    uniqState(toUInt64(10));
+	
+	SELECT
+	    region,
+	    avgMerge(avg_age_state) AS avg_age,
+	    uniqMerge(active_users_state) AS active_users
+	FROM mdrozdov.user_metrics
+	GROUP BY region