mariadb-columnstore-engine/mysql-test/columnstore/basic/t/mcs174_case_function.test

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

--disable_warnings
DROP DATABASE IF EXISTS mcs174_db;
--enable_warnings

CREATE DATABASE mcs174_db;
USE mcs174_db;

SET default_storage_engine=Columnstore;

CREATE TABLE t1 (a CHAR(1), b INT, c DATETIME, d DOUBLE);
INSERT INTO t1 VALUES ('', NULL, '0-0-0', NULL),('a', 12, '1212-12-12', 1.19691E+100),('b', 13, '1313-3-13 13:13:13', 2.1961E+18),('c', 14, '1414-4-14', 0.16191),('d', 15, '2015-5-15 15:15:15', 1.971917);
--replace_regex /( COLLATE=latin1_swedish_ci)//
SHOW CREATE TABLE t1;

SELECT b, c, (CASE WHEN a = 'b' THEN b ELSE c END) FROM t1;
SELECT b, a, (CASE WHEN b > 13 THEN b ELSE a END) FROM t1;
SELECT c, a, (CASE WHEN d > 1  THEN a ELSE c END) FROM t1;
SELECT a, c, (CASE WHEN c IS NULL THEN a ELSE c END) FROM t1;
SELECT (CASE WHEN a = 'a' THEN 0 ELSE 1 END) FROM t1;
SELECT (CASE WHEN 10 > 5 THEN 'True' ELSE 'False' END);

# Clean UP
DROP DATABASE mcs174_db;