From 1eaa3cb309d089c71b16994db6b2102ac47d744d Mon Sep 17 00:00:00 2001
From: Alexey Milovidov <milovidov@yandex-team.ru>
Date: Fri, 16 Oct 2015 23:32:44 +0300
Subject: [PATCH] dbms: implemented method getExtremes for ColumnTuple
 [#METR-18474].

---
 dbms/include/DB/Columns/ColumnTuple.h               |  8 +++++++-
 .../0_stateless/00254_tuple_extremes.reference      | 13 +++++++++++++
 .../queries/0_stateless/00254_tuple_extremes.sql    |  1 +
 3 files changed, 21 insertions(+), 1 deletion(-)
 create mode 100644 dbms/tests/queries/0_stateless/00254_tuple_extremes.reference
 create mode 100644 dbms/tests/queries/0_stateless/00254_tuple_extremes.sql

diff --git a/dbms/include/DB/Columns/ColumnTuple.h b/dbms/include/DB/Columns/ColumnTuple.h
index bfbbc4c4f59..9c02edbaec6 100644
--- a/dbms/include/DB/Columns/ColumnTuple.h
+++ b/dbms/include/DB/Columns/ColumnTuple.h
@@ -233,7 +233,13 @@ public:
 
 	void getExtremes(Field & min, Field & max) const override
 	{
-		throw Exception("Method getExtremes is not supported for " + getName(), ErrorCodes::NOT_IMPLEMENTED);
+		size_t tuple_size = columns.size();
+
+		min = Array(tuple_size);
+		max = Array(tuple_size);
+
+		for (size_t i = 0; i < tuple_size; ++i)
+			columns[i]->getExtremes(min.get<Array &>()[i], max.get<Array &>()[i]);
 	}
 
 
diff --git a/dbms/tests/queries/0_stateless/00254_tuple_extremes.reference b/dbms/tests/queries/0_stateless/00254_tuple_extremes.reference
new file mode 100644
index 00000000000..67c495239b5
--- /dev/null
+++ b/dbms/tests/queries/0_stateless/00254_tuple_extremes.reference
@@ -0,0 +1,13 @@
+0	(0,'2015-01-01')
+1	(1,'2015-01-02')
+2	(2,'2015-01-03')
+3	(3,'2015-01-04')
+4	(4,'2015-01-05')
+5	(5,'2015-01-06')
+6	(6,'2015-01-07')
+7	(7,'2015-01-08')
+8	(8,'2015-01-09')
+9	(9,'2015-01-10')
+
+0	(0,'2015-01-01')
+9	(9,'2015-01-10')
diff --git a/dbms/tests/queries/0_stateless/00254_tuple_extremes.sql b/dbms/tests/queries/0_stateless/00254_tuple_extremes.sql
new file mode 100644
index 00000000000..f87fdf93d3b
--- /dev/null
+++ b/dbms/tests/queries/0_stateless/00254_tuple_extremes.sql
@@ -0,0 +1 @@
+SELECT number, (number, toDate('2015-01-01') + number) FROM system.numbers LIMIT 10 SETTINGS extremes = 1;