Adding upstream version 1:10.5.12.upstream/1%10.5.12upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 600 insertions, 0 deletions

diff --git a/mysql-test/main/timezone2.test b/mysql-test/main/timezone2.test
new file mode 100644
index 00000000..6a8c9f25
--- /dev/null
+++ b/mysql-test/main/timezone2.test
@@ -0,0 +1,600 @@
+# This script tests our own time zone support functions
+
+# Preparing playground
+--disable_warnings
+drop table if exists t1, t2;
+drop function if exists f1;
+--enable_warnings
+
+
+# 
+# Let us first check +HH:MM style timezones
+#
+create table t1 (ts timestamp);
+
+set time_zone='+00:00';
+select unix_timestamp(utc_timestamp())-unix_timestamp(current_timestamp());
+insert into t1 (ts) values ('2003-03-30 02:30:00');
+
+set time_zone='+10:30';
+select unix_timestamp(utc_timestamp())-unix_timestamp(current_timestamp());
+insert into t1 (ts) values ('2003-03-30 02:30:00');
+
+set time_zone='-10:00';
+select unix_timestamp(utc_timestamp())-unix_timestamp(current_timestamp());
+insert into t1 (ts) values ('2003-03-30 02:30:00');
+
+# Here we will get different results
+select * from t1;
+
+drop table t1;
+
+
+# 
+# Let us try DB specified time zones
+#
+select Name from mysql.time_zone_name where Name in 
+  ('UTC','Universal','MET','Europe/Moscow','leap/Europe/Moscow');
+
+create table t1 (i int, ts timestamp);
+
+set time_zone='MET';
+
+# We check common date time value and non existent or ambiguios values
+# Normal value without DST
+insert into t1 (i, ts) values
+  (unix_timestamp('2003-03-01 00:00:00'),'2003-03-01 00:00:00');
+# Values around and in spring time-gap
+insert into t1 (i, ts) values
+  (unix_timestamp('2003-03-30 01:59:59'),'2003-03-30 01:59:59'),
+  (unix_timestamp('2003-03-30 02:30:00'),'2003-03-30 02:30:00'),
+  (unix_timestamp('2003-03-30 03:00:00'),'2003-03-30 03:00:00');
+# Values around and in spring time-gap
+insert into t1 (i, ts) values
+  (unix_timestamp(20030330015959),20030330015959),
+  (unix_timestamp(20030330023000),20030330023000),
+  (unix_timestamp(20030330030000),20030330030000);
+# Normal value with DST
+insert into t1 (i, ts) values
+  (unix_timestamp('2003-05-01 00:00:00'),'2003-05-01 00:00:00');
+# Ambiguos values (also check for determenism)
+insert into t1 (i, ts) values
+  (unix_timestamp('2003-10-26 01:00:00'),'2003-10-26 01:00:00'),
+  (unix_timestamp('2003-10-26 02:00:00'),'2003-10-26 02:00:00'),
+  (unix_timestamp('2003-10-26 02:59:59'),'2003-10-26 02:59:59'),
+  (unix_timestamp('2003-10-26 04:00:00'),'2003-10-26 04:00:00'),
+  (unix_timestamp('2003-10-26 02:59:59'),'2003-10-26 02:59:59');
+
+set time_zone='UTC';
+
+select * from t1;
+
+truncate table t1;
+
+# Simple check for 'Europe/Moscow' time zone just for showing that it works
+set time_zone='Europe/Moscow';
+insert into t1 (i, ts) values
+  (unix_timestamp('2004-01-01 00:00:00'),'2004-01-01 00:00:00'),
+  (unix_timestamp('2004-03-28 02:30:00'),'2004-03-28 02:30:00'),
+  (unix_timestamp('2004-08-01 00:00:00'),'2003-08-01 00:00:00'),
+  (unix_timestamp('2004-10-31 02:30:00'),'2004-10-31 02:30:00');
+select * from t1;
+truncate table t1;
+
+
+#
+# Check for time zone with leap seconds
+# Values in ts column must be the same but values in i column should
+# differ from corresponding values for Europe/Moscow a bit.
+#
+set time_zone='leap/Europe/Moscow';
+insert into t1 (i, ts) values
+  (unix_timestamp('2004-01-01 00:00:00'),'2004-01-01 00:00:00'),
+  (unix_timestamp('2004-03-28 02:30:00'),'2004-03-28 02:30:00'),
+  (unix_timestamp('2004-08-01 00:00:00'),'2003-08-01 00:00:00'),
+  (unix_timestamp('2004-10-31 02:30:00'),'2004-10-31 02:30:00');
+select * from t1;
+truncate table t1;
+# Let us test leap jump
+insert into t1 (i, ts) values
+  (unix_timestamp('1981-07-01 03:59:59'),'1981-07-01 03:59:59'),
+  (unix_timestamp('1981-07-01 04:00:00'),'1981-07-01 04:00:00');
+select * from t1;
+# Additional 60ieth second!
+select from_unixtime(362793609);
+
+drop table t1;
+
+
+# 
+# Let us test range for TIMESTAMP
+#
+create table t1 (ts timestamp);
+set time_zone='UTC';
+insert into t1 values ('0000-00-00 00:00:00'),('1969-12-31 23:59:59'),
+                      ('1970-01-01 00:00:00'),('1970-01-01 00:00:01'),
+                      ('2038-01-19 03:14:07'),('2038-01-19 03:14:08');
+select * from t1;
+truncate table t1;
+# MET time zone has range shifted by one hour
+set time_zone='MET';
+insert into t1 values ('0000-00-00 00:00:00'),('1970-01-01 00:30:00'),
+                      ('1970-01-01 01:00:00'),('1970-01-01 01:00:01'),
+                      ('2038-01-19 04:14:07'),('2038-01-19 04:14:08');
+select * from t1;
+truncate table t1;
+# same for +01:30 time zone
+set time_zone='+01:30';
+insert into t1 values ('0000-00-00 00:00:00'),('1970-01-01 01:00:00'),
+                      ('1970-01-01 01:30:00'),('1970-01-01 01:30:01'),
+                      ('2038-01-19 04:44:07'),('2038-01-19 04:44:08');
+select * from t1;
+
+drop table t1;
+
+
+# 
+# Test of show variables
+#
+show variables like 'time_zone';
+set time_zone = default;
+show variables like 'time_zone';
+
+
+# 
+# Let us try some invalid time zone specifications
+#
+--error 1298
+set time_zone= '0';
+--error 1298
+set time_zone= '0:0';
+--error 1298
+set time_zone= '-20:00';
+--error 1298
+set time_zone= '+20:00';
+--error 1298
+set time_zone= 'Some/Unknown/Time/Zone';
+
+
+# Let us check that aliases for time zones work and they are 
+# case-insensitive
+select convert_tz(now(),'UTC', 'Universal') = now();
+select convert_tz(now(),'utc', 'UTC') = now();
+
+
+# 
+# Let us test CONVERT_TZ function (may be func_time.test is better place).
+#
+select convert_tz('1917-11-07 12:00:00', 'MET', 'UTC'); 
+select convert_tz('1970-01-01 01:00:00', 'MET', 'UTC'); 
+select convert_tz('1970-01-01 01:00:01', 'MET', 'UTC'); 
+select convert_tz('2003-03-01 00:00:00', 'MET', 'UTC');
+select convert_tz('2003-03-30 01:59:59', 'MET', 'UTC');
+select convert_tz('2003-03-30 02:30:00', 'MET', 'UTC');
+select convert_tz('2003-03-30 03:00:00', 'MET', 'UTC');
+select convert_tz('2003-05-01 00:00:00', 'MET', 'UTC');
+select convert_tz('2003-10-26 01:00:00', 'MET', 'UTC');
+select convert_tz('2003-10-26 02:00:00', 'MET', 'UTC');
+select convert_tz('2003-10-26 02:59:59', 'MET', 'UTC');
+select convert_tz('2003-10-26 04:00:00', 'MET', 'UTC');
+select convert_tz('2038-01-19 04:14:07', 'MET', 'UTC');
+select convert_tz('2038-01-19 04:14:08', 'MET', 'UTC');
+select convert_tz('2103-01-01 04:00:00', 'MET', 'UTC');
+
+# Let us test variable time zone argument
+create table t1 (tz varchar(3));
+insert into t1 (tz) values ('MET'), ('UTC');
+select tz, convert_tz('2003-12-31 00:00:00',tz,'UTC'), convert_tz('2003-12-31 00:00:00','UTC',tz) from t1 order by tz;
+drop table t1;
+
+# Parameters to CONVERT_TZ() what should give NULL
+select convert_tz('2003-12-31 04:00:00', NULL, 'UTC');
+select convert_tz('2003-12-31 04:00:00', 'SomeNotExistingTimeZone', 'UTC');
+select convert_tz('2003-12-31 04:00:00', 'MET', 'SomeNotExistingTimeZone');
+select convert_tz('2003-12-31 04:00:00', 'MET', NULL);
+select convert_tz( NULL, 'MET', 'UTC');
+
+#
+# Test for bug #4508 "CONVERT_TZ() function with new time zone as param
+# crashes server." (Was caused by improperly worked mechanism of time zone
+# dynamical loading).
+#
+create table t1 (ts timestamp);
+set timestamp=1000000000;
+insert into t1 (ts) values (now());
+select convert_tz(ts, @@time_zone, 'Japan') from t1;
+drop table t1;
+
+#
+# Test for bug #7705 "CONVERT_TZ() crashes with subquery/WHERE on index
+# column". Queries in which one of time zone arguments of CONVERT_TZ() is
+# determined as constant only at val() stage (not at fix_fields() stage),
+# should not crash server.
+#
+select convert_tz('2005-01-14 17:00:00', 'UTC', custTimeZone) from (select 'UTC' as custTimeZone) as tmp;
+
+#
+# Test for bug #7899 "CREATE TABLE .. SELECT .. and CONVERT_TZ() function
+# does not work well together". The following statement should return only
+# one NULL row and not result of full join.
+#
+create table t1 select convert_tz(NULL, NULL, NULL);
+select * from t1;
+drop table t1;
+
+# End of 4.1 tests
+
+#
+# Test for bug #11081 "Using a CONVERT_TZ function in a stored function
+# or trigger fails".
+#
+SET @old_log_bin_trust_function_creators = @@global.log_bin_trust_function_creators;
+SET GLOBAL log_bin_trust_function_creators = 1;
+
+create table t1 (ldt datetime, udt datetime);
+create function f1(i datetime) returns datetime
+  return convert_tz(i, 'UTC', 'Europe/Moscow');
+create trigger t1_bi before insert on t1 for each row
+  set new.udt:= convert_tz(new.ldt, 'Europe/Moscow', 'UTC');
+# This should work without errors
+insert into t1 (ldt) values ('2006-04-19 16:30:00');
+select * from t1;
+# This should work without errors as well
+select ldt, f1(udt) as ldt2 from t1;
+drop table t1;
+drop function f1;
+
+SET @@global.log_bin_trust_function_creators= @old_log_bin_trust_function_creators;
+
+# End of 5.0 tests
+
+
+#
+# BUG#9953: CONVERT_TZ requires mysql.time_zone_name to be locked
+# BUG#19339: CONVERT_TZ(): overly aggressive in locking time_zone_name
+# table
+#
+--disable_warnings
+DROP TABLE IF EXISTS t1;
+--enable_warnings
+
+CREATE TABLE t1 (t TIMESTAMP);
+INSERT INTO t1 VALUES (NULL), (NULL);
+
+LOCK TABLES t1 WRITE;
+
+# The following two queries should not return error that time zone
+# tables aren't locked.  We use IS NULL below to supress timestamp
+# result.
+SELECT CONVERT_TZ(NOW(), 'UTC', 'Europe/Moscow') IS NULL;
+UPDATE t1 SET t = CONVERT_TZ(t, 'UTC', 'Europe/Moscow');
+
+UNLOCK TABLES;
+
+DROP TABLE t1;
+
+--echo #
+--echo # Bug #55424: convert_tz crashes when fed invalid data
+--echo #
+
+CREATE TABLE t1 (a SET('x') NOT NULL);
+INSERT INTO t1 VALUES ('');
+SELECT CONVERT_TZ(1, a, 1) FROM t1;
+SELECT CONVERT_TZ(1, 1, a) FROM t1;
+DROP TABLE t1;
+
+--echo End of 5.1 tests
+
+
+--echo #
+--echo # Start of 5.3 tests
+--echo #
+
+--echo #
+--echo # MDEV-4653 Wrong result for CONVERT_TZ(TIME('00:00:00'),'+00:00','+7:5')
+--echo #
+
+SET timestamp=unix_timestamp('2001-02-03 10:20:30');
+SELECT CONVERT_TZ(TIME('00:00:00'),'+00:00','+7:5');
+SELECT CONVERT_TZ(TIME('2010-01-01 00:00:00'),'+00:00','+7:5');
+SET timestamp=DEFAULT;
+
+--echo #
+--echo # MDEV-5506 safe_mutex: Trying to lock unitialized mutex at safemalloc.c on server shutdown after SELECT with CONVERT_TZ
+--echo #
+SELECT CONVERT_TZ('2001-10-08 00:00:00', MAKE_SET(0,'+01:00'), '+00:00' ); 
+
+
+--echo #
+--echo # End of 5.3 tests
+--echo #
+
+--echo #
+--echo # Start of 10.1 tests
+--echo #
+
+--echo #
+--echo # MDEV-11895 NO_ZERO_DATE affects timestamp values without any warnings
+--echo #
+
+SET sql_mode = '';
+CREATE TABLE t1 (a TIMESTAMP NULL) ENGINE = MyISAM;
+CREATE TABLE t2 (a TIMESTAMP NULL) ENGINE = MyISAM;
+CREATE TABLE t3 (a TIMESTAMP NULL) ENGINE = MyISAM;
+
+SET @@session.time_zone = 'UTC';
+INSERT INTO t1 VALUES ('2011-10-29 23:00:00');
+INSERT INTO t1 VALUES ('2011-10-29 23:00:01');
+INSERT INTO t1 VALUES ('2011-10-29 23:59:59');
+
+SET @@session.time_zone = 'Europe/Moscow';
+SET sql_mode='NO_ZERO_DATE';
+INSERT INTO t2 SELECT * FROM t1;
+SET sql_mode='';
+INSERT INTO t3 SELECT * FROM t1;
+SELECT UNIX_TIMESTAMP(a), a FROM t2;
+SELECT UNIX_TIMESTAMP(a), a FROM t3;
+DROP TABLE t1, t2, t3;
+
+--echo #
+--echo # End of 10.1 tests
+--echo #
+
+--echo #
+--echo # Start of 10.4 tests
+--echo #
+
+--echo #
+--echo # MDEV-17203 Move fractional second truncation from Item_xxx_typecast::get_date() to Time and Datetime constructors
+--echo # (an addition for the test for MDEV-4653)
+
+SET timestamp=unix_timestamp('2001-02-03 10:20:30');
+SET old_mode=ZERO_DATE_TIME_CAST;
+SELECT CONVERT_TZ(TIME('00:00:00'),'+00:00','+7:5');
+SELECT CONVERT_TZ(TIME('2010-01-01 00:00:00'),'+00:00','+7:5');
+SET old_mode=DEFAULT;
+SET timestamp=DEFAULT;
+
+--echo #
+--echo # MDEV-13995 MAX(timestamp) returns a wrong result near DST change
+--echo #
+
+# MAX()
+SET time_zone='+00:00';
+CREATE TABLE t1 (a TIMESTAMP);
+INSERT INTO t1 VALUES (FROM_UNIXTIME(1288477526)      /*summer time in Moscow*/);
+INSERT INTO t1 VALUES (FROM_UNIXTIME(1288477526+3599) /*winter time in Moscow*/);
+SET time_zone='Europe/Moscow';
+SELECT a, UNIX_TIMESTAMP(a) FROM t1;
+SELECT UNIX_TIMESTAMP(MAX(a)) AS a FROM t1;
+CREATE TABLE t2 (a TIMESTAMP);
+INSERT INTO t2 SELECT MAX(a) AS a FROM t1;
+SELECT a, UNIX_TIMESTAMP(a) FROM t2;
+DROP TABLE t2;
+DROP TABLE t1;
+
+
+# Comparison
+SET time_zone='+00:00';
+CREATE TABLE t1 (a TIMESTAMP);
+CREATE TABLE t2 (a TIMESTAMP);
+INSERT INTO t1 VALUES (FROM_UNIXTIME(1288477526)      /*summer time in Moscow*/);
+INSERT INTO t2 VALUES (FROM_UNIXTIME(1288477526+3599) /*winter time in Moscow*/);
+SET time_zone='Europe/Moscow';
+SELECT UNIX_TIMESTAMP(t1.a), UNIX_TIMESTAMP(t2.a) FROM t1,t2;
+SELECT * FROM t1,t2 WHERE t1.a < t2.a;
+DROP TABLE t1,t2;
+
+
+# SP variable comparison
+DELIMITER $$;
+BEGIN NOT ATOMIC
+  DECLARE a,b TIMESTAMP;
+  SET time_zone='+00:00';
+  SET a=FROM_UNIXTIME(1288477526);
+  SET b=FROM_UNIXTIME(1288481125);
+  SELECT a < b;
+  SET time_zone='Europe/Moscow';
+  SELECT a < b;
+END;
+$$
+DELIMITER ;$$
+
+
+# SP function comparison
+DELIMITER $$;
+CREATE OR REPLACE FUNCTION f1(uts INT) RETURNS TIMESTAMP
+BEGIN
+  DECLARE ts TIMESTAMP;
+  DECLARE tz VARCHAR(64) DEFAULT @@time_zone;
+  SET time_zone='+00:00';
+  SET ts=FROM_UNIXTIME(uts);
+  SET time_zone=tz;
+  RETURN ts;
+END;
+$$
+DELIMITER ;$$
+SET time_zone='+00:00';
+SELECT f1(1288477526) < f1(1288481125);
+SET time_zone='Europe/Moscow';
+SELECT f1(1288477526) < f1(1288481125);
+DROP FUNCTION f1;
+
+
+# LEAST()
+CREATE TABLE t1 (a TIMESTAMP,b TIMESTAMP);
+SET time_zone='+00:00';
+INSERT INTO t1 VALUES (FROM_UNIXTIME(1288477526) /*summer time in Mowcow*/,
+                       FROM_UNIXTIME(1288481125) /*winter time in Moscow*/);
+SELECT *, LEAST(a,b) FROM t1;
+SET time_zone='Europe/Moscow';
+SELECT *, LEAST(a,b) FROM t1;
+SELECT UNIX_TIMESTAMP(a), UNIX_TIMESTAMP(b), UNIX_TIMESTAMP(LEAST(a,b)) FROM t1;
+DROP TABLE t1;
+
+
+# BETWEEN
+CREATE TABLE t1 (a TIMESTAMP,b TIMESTAMP,c TIMESTAMP);
+SET time_zone='+00:00';
+INSERT INTO t1 VALUES (
+  FROM_UNIXTIME(1288477526) /*summer time in Moscow*/,
+  FROM_UNIXTIME(1288481125) /*winter time in Moscow*/,
+  FROM_UNIXTIME(1288481126) /*winter time in Moscow*/);
+SELECT b BETWEEN a AND c FROM t1;
+SET time_zone='Europe/Moscow';
+SELECT b BETWEEN a AND c FROM t1;
+DROP TABLE t1;
+
+
+# ORDER BY
+SET time_zone='+00:00';
+CREATE TABLE t1 (a TIMESTAMP);
+INSERT INTO t1 VALUES (FROM_UNIXTIME(1288477526) /*summer time in Mowcow*/);
+INSERT INTO t1 VALUES (FROM_UNIXTIME(1288481125) /*winter time in Moscow*/);
+SELECT a, UNIX_TIMESTAMP(a) FROM t1 ORDER BY a;
+SELECT COALESCE(a) AS a, UNIX_TIMESTAMP(a) FROM t1 ORDER BY a;
+SET time_zone='Europe/Moscow';
+SELECT a, UNIX_TIMESTAMP(a) FROM t1 ORDER BY a;
+SELECT COALESCE(a) AS a, UNIX_TIMESTAMP(a) FROM t1 ORDER BY a;
+DROP TABLE t1;
+
+
+# GROUP BY
+SET time_zone='+00:00';
+CREATE TABLE t1 (a TIMESTAMP);
+INSERT INTO t1 VALUES (FROM_UNIXTIME(1288477526) /*summer time in Mowcow*/);
+INSERT INTO t1 VALUES (FROM_UNIXTIME(1288481126) /*winter time in Moscow*/);
+SET time_zone='Europe/Moscow';
+SELECT a, UNIX_TIMESTAMP(a) FROM t1 GROUP BY a;
+DROP TABLE t1;
+
+
+# CASE
+SET time_zone='+00:00';
+CREATE TABLE t1 (a TIMESTAMP, b TIMESTAMP);
+INSERT INTO t1 VALUES (FROM_UNIXTIME(1288477526),FROM_UNIXTIME(1288481126));
+SELECT UNIX_TIMESTAMP(a),UNIX_TIMESTAMP(b),CASE a WHEN b THEN 'eq' ELSE 'ne' END AS x FROM t1;
+SET time_zone='Europe/Moscow';
+SELECT UNIX_TIMESTAMP(a),UNIX_TIMESTAMP(b),CASE a WHEN b THEN 'eq' ELSE 'ne' END AS x FROM t1;
+DROP TABLE t1;
+
+
+# IN
+SET time_zone='+00:00';
+CREATE TABLE t1 (a TIMESTAMP, b TIMESTAMP,c TIMESTAMP);
+INSERT INTO t1 VALUES (FROM_UNIXTIME(1288477526),FROM_UNIXTIME(1288481126),FROM_UNIXTIME(1288481127));
+SELECT UNIX_TIMESTAMP(a),UNIX_TIMESTAMP(b),a IN (b,c) AS x FROM t1;
+SET time_zone='Europe/Moscow';
+SELECT UNIX_TIMESTAMP(a),UNIX_TIMESTAMP(b),a IN (b,c) AS x FROM t1;
+DROP TABLE t1;
+
+# Comparison and IN in combination with a subquery (with one row)
+
+SET time_zone='+00:00';
+CREATE TABLE t1 (a TIMESTAMP, b TIMESTAMP);
+INSERT INTO t1 VALUES (FROM_UNIXTIME(1288477526),FROM_UNIXTIME(1288481126));
+SELECT * FROM t1 WHERE a = (SELECT MAX(b) FROM t1);
+SELECT * FROM t1 WHERE a = (SELECT MIN(b) FROM t1);
+SELECT * FROM t1 WHERE a IN ((SELECT MAX(b) FROM t1), (SELECT MIN(b) FROM t1));
+
+SET time_zone='Europe/Moscow';
+SELECT * FROM t1 WHERE a = (SELECT MAX(b) FROM t1);
+SELECT * FROM t1 WHERE a = (SELECT MIN(b) FROM t1);
+SELECT * FROM t1 WHERE a IN ((SELECT MAX(b) FROM t1), (SELECT MIN(b) FROM t1));
+DROP TABLE t1;
+
+# Comparison and IN in combinarion with a subquery (with multiple rows)
+SET time_zone='+00:00';
+CREATE TABLE t1 (a TIMESTAMP, b TIMESTAMP);
+INSERT INTO t1 VALUES (FROM_UNIXTIME(1100000000),FROM_UNIXTIME(1200000000));
+INSERT INTO t1 VALUES (FROM_UNIXTIME(1100000001),FROM_UNIXTIME(1200000001));
+INSERT INTO t1 VALUES (FROM_UNIXTIME(1288477526),FROM_UNIXTIME(1288481126));
+INSERT INTO t1 VALUES (FROM_UNIXTIME(1300000000),FROM_UNIXTIME(1400000000));
+INSERT INTO t1 VALUES (FROM_UNIXTIME(1300000001),FROM_UNIXTIME(1400000001));
+SELECT * FROM t1 WHERE a = (SELECT MAX(b) FROM t1);
+SELECT * FROM t1 WHERE a = (SELECT MIN(b) FROM t1);
+SELECT * FROM t1 WHERE a IN ((SELECT MAX(b) FROM t1), (SELECT MIN(b) FROM t1));
+
+SET time_zone='Europe/Moscow';
+SELECT * FROM t1 WHERE a = (SELECT MAX(b) FROM t1);
+SELECT * FROM t1 WHERE a = (SELECT MIN(b) FROM t1);
+SELECT * FROM t1 WHERE a IN ((SELECT MAX(b) FROM t1), (SELECT MIN(b) FROM t1));
+DROP TABLE t1;
+
+# NULLIF
+
+SET time_zone='Europe/Moscow';
+
+CREATE TABLE t1 (a TIMESTAMP);
+CREATE TABLE t2 (a TIMESTAMP);
+SET timestamp=1288479599 /*summer time in Mowcow*/;
+INSERT INTO t1 VALUES (CURRENT_TIMESTAMP);
+SET timestamp=1288479599+3600 /*winter time in Mowcow*/;
+INSERT INTO t2 VALUES (CURRENT_TIMESTAMP);
+SELECT t1.a, UNIX_TIMESTAMP(t1.a), t2.a, UNIX_TIMESTAMP(t2.a) FROM t1, t2;
+SELECT NULLIF(t1.a, t2.a) FROM t1,t2;
+DROP TABLE t1, t2;
+SET time_zone=DEFAULT;
+SET timestamp=DEFAULT;
+
+
+--echo #
+--echo # MDEV-17979 Assertion `0' failed in Item::val_native upon SELECT with timestamp, NULLIF, GROUP BY
+--echo #
+
+SET time_zone='+00:00';
+CREATE TABLE t1 (a INT, ts TIMESTAMP) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (1, FROM_UNIXTIME(1288481126) /*winter time in Moscow*/);
+SET time_zone='Europe/Moscow';
+CREATE TABLE t2 AS SELECT ts, COALESCE(ts) AS cts FROM t1 GROUP BY cts;
+SELECT ts, cts, UNIX_TIMESTAMP(ts) AS uts, UNIX_TIMESTAMP(cts) AS ucts FROM t2;
+DROP TABLE t1,t2;
+SET time_zone=DEFAULT;
+
+--echo #
+--echo # MDEV-19961 MIN(timestamp_column) returns a wrong result in a GROUP BY query
+--echo #
+
+SET time_zone='Europe/Moscow';
+CREATE OR REPLACE TABLE t1 (i INT, d TIMESTAMP);
+SET timestamp=1288477526  /* this is summer time */ ;
+INSERT INTO t1 VALUES (3,NULL);
+SET timestamp=1288477526+3599 /* this is winter time*/ ;
+INSERT INTO t1 VALUES (3,NULL);
+SELECT i, d, UNIX_TIMESTAMP(d) FROM t1 ORDER BY d;
+SELECT i, MIN(d) FROM t1 GROUP BY i;
+SELECT i, MAX(d) FROM t1 GROUP BY i;
+DROP TABLE t1;
+SET timestamp=DEFAULT;
+SET time_zone=DEFAULT;
+
+--echo #
+--echo # MDEV-20397 Support TIMESTAMP, DATETIME, TIME in ROUND() and TRUNCATE()
+--echo #
+
+SET time_zone='Europe/Moscow';
+CREATE TABLE t1 (i INT, d TIMESTAMP(6));
+SET timestamp=1288479599.999999  /* this is the last second in summer time */ ;
+INSERT INTO t1 VALUES (1,NULL);
+SET timestamp=1288479600.000000 /* this is the first second in winter time */ ;
+INSERT INTO t1 VALUES (2,NULL);
+SELECT i, d, UNIX_TIMESTAMP(d) FROM t1 ORDER BY d;
+
+CREATE TABLE t2 (i INT, d TIMESTAMP, expected_unix_timestamp INT UNSIGNED);
+INSERT INTO t2 SELECT i, ROUND(d) AS d, ROUND(UNIX_TIMESTAMP(d)) FROM t1;
+
+--echo # UNIX_TIMESTAMP(d) and expected_unix_timestamp should return the same value.
+--echo # Currently they do not, because ROUND(timestamp) is performed as DATETIME.
+--echo # We should fix this eventually.
+
+SELECT i, d, UNIX_TIMESTAMP(d), expected_unix_timestamp FROM t2 ORDER BY i;
+DROP TABLE t2;
+
+DROP TABLE t1;
+SET timestamp=DEFAULT;
+SET time_zone=DEFAULT;
+
+
+--echo #
+--echo # End of 10.4 tests
+--echo #