chore: bootstrap project structure

infrastructure/clickhouse/init.sql

@@ -0,0 +1,38 @@
+CREATE DATABASE IF NOT EXISTS telecom;
+
+CREATE TABLE IF NOT EXISTS telecom.cdr_records
+(
+    cdr_id UUID,
+    raw_id String,
+
+    msisdn String,
+    imsi String,
+
+    service_type LowCardinality(String),
+    radio_access_type LowCardinality(String),
+    cell_id LowCardinality(String),
+
+    bytes_uploaded UInt64,
+    bytes_downloaded UInt64,
+    total_bytes UInt64,
+    duration_seconds UInt32,
+
+    session_start_time DateTime,
+    session_end_time DateTime,
+
+    source_ip IPv4,
+
+    processed_at DateTime64(3) DEFAULT now()
+)
+ENGINE = ReplacingMergeTree(processed_at)
+PARTITION BY toYYYYMM(session_start_time)
+ORDER BY (
+    service_type,
+    radio_access_type,
+    cell_id,
+    session_start_time,
+    msisdn,
+    cdr_id
+)
+TTL session_start_time + INTERVAL 90 DAY
+SETTINGS index_granularity = 8192;