#
# Test VARIANCE() Window Function
# Author: Bharath, bharath.bokka@mariadb.com
#
-- source ../include/have_columnstore.inc

--disable_warnings
DROP DATABASE IF EXISTS mcs145_db;
--enable_warnings

CREATE DATABASE mcs145_db;
USE mcs145_db;

CREATE TABLE t1 (a CHAR(1), b INT)ENGINE=Columnstore;
INSERT INTO t1 VALUES ('', NULL),('a', 12),('a', 13),('b', 14),('b', 15),('b', 16),('b', 17),('b', 18),('a', 19);

SELECT a, b, VARIANCE(b) OVER(PARTITION BY a) variance FROM t1;
SELECT a, b, VARIANCE(b) OVER(PARTITION BY a DESC) variance FROM t1;
SELECT a, b, VARIANCE(b) OVER(PARTITION BY b DESC) variance FROM t1;
SELECT a, b, VARIANCE(b) OVER(PARTITION BY b) variance FROM t1;
SELECT a, b, VARIANCE(b) OVER(ORDER BY a) variance FROM t1;
SELECT a, b, VARIANCE(b) OVER(ORDER BY b) variance FROM t1;
SELECT a, b, VARIANCE(b) OVER(ORDER BY a DESC) variance FROM t1;
SELECT a, b, VARIANCE(b) OVER(ORDER BY b DESC) variance FROM t1;
SELECT a, b, VARIANCE(b) OVER(PARTITION BY a ORDER BY b) variance FROM t1;
SELECT a, b, VARIANCE(b) OVER(PARTITION BY b ORDER BY a) variance FROM t1;
SELECT a, b, VARIANCE(b) OVER(PARTITION BY b ORDER BY b DESC) variance FROM t1;
SELECT a, b, VARIANCE(b) OVER(PARTITION BY a ORDER BY a DESC) variance FROM t1;

# Clean UP
DROP DATABASE mcs145_db;