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mariadb/mysql-test/t/timezone2.test
unknown 20bd0bd6fd Fix for bug #7899 "CREATE TABLE .. SELECT .. and CONVERT_TZ() function 
does not work well together". Now using simplier and more correct
implementation of st_lex::unlink_first_table()/link_first_table_back() 
(It also nicely handles case when global table list is created because
of implictly used time zone tables). (2nd attempt)

Fix for bug #7705 "CONVERT_TZ() crashes with subquery/WHERE on index
column". Implemented new approach for caching objects for constant
time zone arguments. Now instead of determining whenever these arguments
are constants and performing time zone lookup at fix_fields() stage, we
do it on first get_date() invocation.

Cleanup of global @@time_zone variable handling.


mysql-test/r/timezone2.result:
  Added test for bugs #7705 "CONVERT_TZ() crashes with subquery/WHERE on
  index column" and #7899 "CREATE TABLE .. SELECT .. and CONVERT_TZ()
  function does not work well together".
mysql-test/t/timezone2.test:
  Added test for bugs #7705 "CONVERT_TZ() crashes with subquery/WHERE on
  index column" and #7899 "CREATE TABLE .. SELECT .. and CONVERT_TZ()
  function does not work well together".
sql/item_timefunc.cc:
  Item_func_convert_tz():
    New approach for caching objects for constant time zone arguments.
    Now instead of determining whenever these arguments are constants
    and performing time zone lookup at fix_fields() stage, we do it
    on first get_date() invocation. This works better in cases when 
    const_item() for these arguments returns true only on get_date()
    stage but not on fix_fields() stage (e.g. this happens in quries
    with joins or derived tables).
sql/item_timefunc.h:
  Item_func_convert_tz():
    Added from_tz_cached/to_tz_cached members indicating whenever we
    already have Time_zone object representing one of constant time zone
    arguments.
sql/set_var.cc:
  Cleaned up global @@time_zone variable handling. Now we use proper
  locking when we are setting or reading its value.
sql/set_var.h:
  Removed declaration of sys_var_thd_time_zone::get_tz_ptr() method, which
  no longer used.
sql/sql_lex.cc:
  st_lex::unlink_first_table(), st_lex::link_first_table_back():
   Simplify implementation according to Monty's suggestion.
   Instead doing something special if global and local table lists
   are the same, we simply save/restore pointers to first elements
   of both global and local lists (which works even when this lists
   are the same!). This handles nicely the case when we have separate
   global table list becuase time zone tables are implicitly used.
sql/tztime.cc:
  Backport of Monty's fixes from 5.0, which give us nicer error messages
  if we haven't found time zone with such name or its description.
2005-01-26 22:25:02 +03:00

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# This script tests our own time zone support functions
# Preparing playground
--disable_warnings
drop table if exists t1, t2;
--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');
# 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;
delete from 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;
delete from 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;
delete from 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'),
('2037-12-31 23:59:59'),('2038-01-01 00:00:00');
select * from t1;
delete from 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'),
('2038-01-01 00:59:59'),('2038-01-01 01:00:00');
select * from t1;
delete from 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'),
('2038-01-01 01:29:59'),('2038-01-01 01:30:00');
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('2038-01-01 00:59:59', 'MET', 'UTC');
select convert_tz('2038-01-01 01:00:00', '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 #6116 "SET time_zone := ... requires access to mysql.time_zone
# tables". We should allow implicit access to time zone description tables
# even for unprivileged users.
#
# Let us prepare playground
delete from mysql.user where user like 'mysqltest\_%';
delete from mysql.db where user like 'mysqltest\_%';
delete from mysql.tables_priv where user like 'mysqltest\_%';
delete from mysql.columns_priv where user like 'mysqltest\_%';
flush privileges;
create table t1 (a int, b datetime);
create table t2 (c int, d datetime);
grant all privileges on test.* to mysqltest_1@localhost;
connect (tzuser, localhost, mysqltest_1,,);
connection tzuser;
show grants for current_user();
set time_zone= '+00:00';
set time_zone= 'Europe/Moscow';
select convert_tz('2004-10-21 19:00:00', 'Europe/Moscow', 'UTC');
select convert_tz(b, 'Europe/Moscow', 'UTC') from t1;
# Let us also check whenever multi-update works ok
update t1, t2 set t1.b = convert_tz('2004-10-21 19:00:00', 'Europe/Moscow', 'UTC')
where t1.a = t2.c and t2.d = (select max(d) from t2);
# But still these two statements should not work:
--error 1044
select * from mysql.time_zone_name;
--error 1044
select Name, convert_tz('2004-10-21 19:00:00', Name, 'UTC') from mysql.time_zone_name;
#
# Test for bug #6765 "Implicit access to time zone description tables
# requires privileges for them if some table or column level grants
# present"
#
connection default;
# Let use some table-level grants instead of db-level
# to make life more interesting
delete from mysql.db where user like 'mysqltest\_%';
flush privileges;
grant all privileges on test.t1 to mysqltest_1@localhost;
grant all privileges on test.t2 to mysqltest_1@localhost;
# The test itself is almost the same as previous one
connect (tzuser2, localhost, mysqltest_1,,);
connection tzuser2;
show grants for current_user();
set time_zone= '+00:00';
set time_zone= 'Europe/Moscow';
select convert_tz('2004-11-31 12:00:00', 'Europe/Moscow', 'UTC');
select convert_tz(b, 'Europe/Moscow', 'UTC') from t1;
update t1, t2 set t1.b = convert_tz('2004-11-30 12:00:00', 'Europe/Moscow', 'UTC')
where t1.a = t2.c and t2.d = (select max(d) from t2);
# Again these two statements should not work (but with different errors):
--error 1142
select * from mysql.time_zone_name;
--error 1142
select Name, convert_tz('2004-11-30 12:00:00', Name, 'UTC') from mysql.time_zone_name;
# Clean-up
connection default;
delete from mysql.user where user like 'mysqltest\_%';
delete from mysql.db where user like 'mysqltest\_%';
delete from mysql.tables_priv where user like 'mysqltest\_%';
flush privileges;
drop table t1, t2;
#
# 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;
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