mariadb-columnstore-engine/mysql-test/columnstore/basic/t/mcs95_variance_functions.test

#
# Test Variance functions
# Author: Bharath, bharath.bokka@mariadb.com
#
-- source ../include/have_columnstore.inc

--disable_warnings
DROP DATABASE IF EXISTS mcs95_db;
--enable_warnings

CREATE DATABASE mcs95_db;
USE mcs95_db;

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

SELECT a, VARIANCE(b) FROM t1 GROUP BY a ORDER BY a;
SELECT a, VAR_POP(b) FROM t1 GROUP BY a ORDER BY a;
SELECT a, VAR_SAMP(b) FROM t1 GROUP BY a ORDER BY a;

# Clean UP
DROP DATABASE mcs95_db;