DROP DATABASE IF EXISTS mcs140_db;
CREATE DATABASE mcs140_db;
USE mcs140_db;
CREATE TABLE t1 (a CHAR(1), b INT)ENGINE=Columnstore;
INSERT INTO t1 VALUES ('', NULL),('a', 123),('a', 1),('b', 123),('c', 1861),('c', 1991),('d', 10701),('d', 1071),('a', 92);
SELECT a, b, MEDIAN(b) OVER(PARTITION BY b) median FROM t1;
a	b	median
NULL	NULL	NULL
a	1	1.0000000000
a	92	92.0000000000
b	123	123.0000000000
a	123	123.0000000000
d	1071	1071.0000000000
c	1861	1861.0000000000
c	1991	1991.0000000000
d	10701	10701.0000000000
SELECT a, b, MEDIAN(b) OVER(PARTITION BY a) median FROM t1;
a	b	median
NULL	NULL	NULL
a	123	92.0000000000
a	92	92.0000000000
a	1	92.0000000000
b	123	123.0000000000
c	1991	1926.0000000000
c	1861	1926.0000000000
d	10701	5886.0000000000
d	1071	5886.0000000000
SELECT a, b, MEDIAN(b) OVER(ORDER BY b DESC) median FROM t1;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'ORDER BY b DESC) median FROM t1' at line 1
SELECT a, b, MEDIAN(a) OVER(PARTITION BY a) median FROM t1;
ERROR HY000: Numeric datatype is required for percentile_cont function
SELECT a, b, MEDIAN(a) OVER(PARTITION BY b) median FROM t1;
ERROR HY000: Numeric datatype is required for percentile_cont function
DROP DATABASE mcs140_db;