From 5e1c10f1e188b7171afb5dd1b225f2a095624d40 Mon Sep 17 00:00:00 2001
From: Alexey Milovidov <milovidov@clickhouse.com>
Date: Sun, 15 Oct 2023 06:08:08 +0200
Subject: [PATCH] Add a test

---
 ...indexing_by_space_filling_curves.reference |  2 ++
 ...02899_indexing_by_space_filling_curves.sql | 23 +++++++++++++++++++
 2 files changed, 25 insertions(+)
 create mode 100644 tests/queries/0_stateless/02899_indexing_by_space_filling_curves.reference
 create mode 100644 tests/queries/0_stateless/02899_indexing_by_space_filling_curves.sql

diff --git a/tests/queries/0_stateless/02899_indexing_by_space_filling_curves.reference b/tests/queries/0_stateless/02899_indexing_by_space_filling_curves.reference
new file mode 100644
index 00000000000..75d516255f1
--- /dev/null
+++ b/tests/queries/0_stateless/02899_indexing_by_space_filling_curves.reference
@@ -0,0 +1,2 @@
+121
+121
diff --git a/tests/queries/0_stateless/02899_indexing_by_space_filling_curves.sql b/tests/queries/0_stateless/02899_indexing_by_space_filling_curves.sql
new file mode 100644
index 00000000000..45e71505707
--- /dev/null
+++ b/tests/queries/0_stateless/02899_indexing_by_space_filling_curves.sql
@@ -0,0 +1,23 @@
+DROP TABLE IF EXISTS test;
+
+CREATE TABLE test (x UInt32, y UInt32) ENGINE = MergeTree ORDER BY mortonEncode(x, y) SETTINGS index_granularity = 8192, index_granularity_bytes = '1Mi';
+INSERT INTO test SELECT number DIV 1024, number % 1024 FROM numbers(1048576);
+
+SET max_rows_to_read = 8192, force_primary_key = 1, analyze_index_with_space_filling_curves = 1;
+SELECT count() FROM test WHERE x >= 10 AND x <= 20 AND y >= 20 AND y <= 30;
+
+SET max_rows_to_read = 8192, force_primary_key = 1, analyze_index_with_space_filling_curves = 0;
+SELECT count() FROM test WHERE x >= 10 AND x <= 20 AND y >= 20 AND y <= 30;  -- { serverError 277 }
+
+DROP TABLE test;
+
+-- The same, but with more precise index
+
+CREATE TABLE test (x UInt32, y UInt32) ENGINE = MergeTree ORDER BY mortonEncode(x, y) SETTINGS index_granularity = 1;
+SET max_rows_to_read = 0;
+INSERT INTO test SELECT number DIV 32, number % 32 FROM numbers(1024);
+
+SET max_rows_to_read = 200, force_primary_key = 1, analyze_index_with_space_filling_curves = 1;
+SELECT count() FROM test WHERE x >= 10 AND x <= 20 AND y >= 20 AND y <= 30;
+
+DROP TABLE test;