# # 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;