Perf test for ColumnMap

tests/performance/ColumnMap.xml

@@ -0,0 +1,36 @@
+<test>
+
+    <settings>
+        <allow_experimental_map_type>1</allow_experimental_map_type>
+    </settings>
+
+    <substitutions>
+        <substitution>
+            <name>key_suffix</name>
+            <values>
+                <value>''</value>
+                <value>'-miss'</value>
+            </values>
+        </substitution>
+    </substitutions>
+
+    <create_query>
+CREATE TABLE column_map_test
+ENGINE = MergeTree ORDER BY number
+AS
+SELECT number, map
+FROM
+(
+    SELECT
+        number,
+        arrayMap(x -> toString(x), range(100)) AS keys,
+        arrayMap(x -> toString(x * x), range(100)) AS values,
+        cast((keys, values), 'Map(String, String)') AS map
+    FROM numbers(1000000)
+)
+    </create_query>
+
+    <query>SELECT count() FROM column_map_test WHERE NOT ignore(arrayMap(x -> map[CONCAT(toString(x), {key_suffix})], range(0, 100, 10)))</query>
+
+    <drop_query>DROP TABLE IF EXISTS column_map_test</drop_query>
+</test>