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

--disable_warnings
DROP DATABASE IF EXISTS mcs171_db;
--enable_warnings

CREATE DATABASE mcs171_db;
USE mcs171_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 IFNULL(NULL, 'abc');
SELECT IFNULL(NULL, 123);
SELECT IFNULL('abc', 123);
SELECT ISNULL(NULL);
SELECT ISNULL(1);
SELECT ISNULL('a');
SELECT NULLIF(1, 1);
SELECT NULLIF('abc', 'a');
--disable_warnings
SELECT NULLIF(1, 'abcd');
--enable_warnings
SELECT a, ISNULL(a) FROM t1;
SELECT b, ISNULL(b) FROM t1;
SELECT c, ISNULL(c) FROM t1;
SELECT d, ISNULL(d) FROM t1;

SELECT a, IFNULL(a, 'Null Char') FROM t1;
SELECT b, IFNULL(b, 'Null Integer') FROM t1;
SELECT c, IFNULL(d, 'Null Decimal') FROM t1;

SELECT a, NULLIF(a, 'c') FROM t1;
SELECT b, NULLIF(b, 15) FROM t1;
SELECT c, NULLIF(c, '2015-5-15') FROM t1;

# Clean UP
DROP DATABASE mcs171_db;