From 5949db1db8b9daac0ec80385c14ecf0141c9f8e6 Mon Sep 17 00:00:00 2001
From: mnoskov <bather.plaint5x@icloud.com>
Date: Tue, 19 May 2026 09:45:42 +0300
Subject: [PATCH] =?UTF-8?q?=D0=9F=D1=80=D0=B0=D0=BA=D1=82=D0=B8=D0=BA?=
 =?UTF-8?q?=D0=B0=20'=D0=A1=D0=B6=D0=B0=D1=82=D0=B8=D0=B5'=20-=20Clickhous?=
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---
 .../3. Сжатие/practice_compression.sql        | 27 +++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 mnoskov/clickhouse/Практика clickhouse/3. Индексы и сжатие/3. Сжатие/practice_compression.sql

diff --git a/mnoskov/clickhouse/Практика clickhouse/3. Индексы и сжатие/3. Сжатие/practice_compression.sql b/mnoskov/clickhouse/Практика clickhouse/3. Индексы и сжатие/3. Сжатие/practice_compression.sql
new file mode 100644
index 0000000..f8758f4
--- /dev/null
+++ b/mnoskov/clickhouse/Практика clickhouse/3. Индексы и сжатие/3. Сжатие/practice_compression.sql	
@@ -0,0 +1,27 @@
+-- Задание 1
+
+CREATE TABLE mnoskov.logs
+ON CLUSTER clickhouse_cluster
+(
+	id UInt64,
+	level String,
+	message String CODEC(ZSTD(3)),
+	created_at DateTime CODEC(Delta, ZSTD)
+)
+ENGINE=ReplicatedMergeTree(
+	'/clickhouse/tables/{shard}/mnoskov/logs',
+	'{replica}'
+)
+ORDER BY created_at;
+
+SELECT
+  column,
+  compression_codec
+FROM system.columns
+WHERE table = 'logs';
+-- если делать с codec_expression, то ошибка вылазит мол такой колонки нет
+-- Выглядит вот так:
+-- id	
+-- level	
+-- message	CODEC(ZSTD(3))
+-- created_at	CODEC(Delta(4), ZSTD(1))
\ No newline at end of file