path: root/mysql-test/main/variables.test

#
# test variables
#
--disable_warnings
drop table if exists t1,t2;
--enable_warnings

#
# Bug#19263: variables.test doesn't clean up after itself (I/II -- save)
#
set @my_binlog_cache_size         =@@global.binlog_cache_size;
set @my_connect_timeout           =@@global.connect_timeout;
set @my_delayed_insert_timeout    =@@global.delayed_insert_timeout;
set @my_delayed_queue_size        =@@global.delayed_queue_size;
set @my_flush                     =@@global.flush;
set @my_flush_time                =@@global.flush_time;
set @my_key_buffer_size           =@@global.key_buffer_size;
set @my_max_binlog_cache_size     =@@global.max_binlog_cache_size;
set @my_max_binlog_size           =@@global.max_binlog_size;
set @my_max_connect_errors        =@@global.max_connect_errors;
set @my_max_connections           =@@global.max_connections;
set @my_max_delayed_threads       =@@global.max_delayed_threads;
set @my_max_heap_table_size       =@@global.max_heap_table_size;
set @my_max_insert_delayed_threads=@@global.max_insert_delayed_threads;
set @my_max_join_size             =@@global.max_join_size;
set @my_max_user_connections      =@@global.max_user_connections;
set @my_myisam_data_pointer_size  =@@global.myisam_data_pointer_size;
set @my_myisam_max_sort_file_size =@@global.myisam_max_sort_file_size;
set @my_net_buffer_length         =@@global.net_buffer_length;
set @my_net_write_timeout         =@@global.net_write_timeout;
set @my_net_read_timeout          =@@global.net_read_timeout;
set @my_server_id                 =@@global.server_id;
set @my_slow_launch_time          =@@global.slow_launch_time;
set @my_storage_engine            =@@global.default_storage_engine;
set @my_thread_cache_size         =@@global.thread_cache_size;
set @my_max_allowed_packet        =@@global.max_allowed_packet;
set @my_delay_key_write           =@@global.delay_key_write;
set @my_join_buffer_size          =@@global.join_buffer_size;
set @my_log_warnings              =@@global.log_warnings;
set @my_local_infile              =@@global.local_infile;

# case insensitivity tests (new in 5.0)
set @`test`=1;
select @test, @`test`, @TEST, @`TEST`, @"teSt";
set @TEST=2;
select @test, @`test`, @TEST, @`TEST`, @"teSt";
set @"tEST"=3;
select @test, @`test`, @TEST, @`TEST`, @"teSt";
set @`TeST`=4;
select @test, @`test`, @TEST, @`TEST`, @"teSt";
select @`teST`:=5;
select @test, @`test`, @TEST, @`TEST`, @"teSt";

set @select=2,@t5=1.23456;
select @`select`,@not_used;
set @test_int=10,@test_double=1e-10,@test_string="abcdeghi",@test_string2="abcdefghij",@select=NULL;
# Expected result "1e-10", windows returns "1e-010"
--replace_result 1e-010 1e-10
select @test_int,@test_double,@test_string,@test_string2,@select;
set @test_int="hello",@test_double="hello",@test_string="hello",@test_string2="hello";
select @test_int,@test_double,@test_string,@test_string2;
set @test_int="hellohello",@test_double="hellohello",@test_string="hellohello",@test_string2="hellohello";
select @test_int,@test_double,@test_string,@test_string2;
set @test_int=null,@test_double=null,@test_string=null,@test_string2=null;
select @test_int,@test_double,@test_string,@test_string2;
select @t1:=(@t2:=1)+@t3:=4,@t1,@t2,@t3;
explain extended select @t1:=(@t2:=1)+@t3:=4,@t1,@t2,@t3;
select @t5;

#
# Test problem with WHERE and variables
#

CREATE TABLE t1 (c_id INT(4) NOT NULL, c_name CHAR(20), c_country CHAR(3), PRIMARY KEY(c_id));
INSERT INTO t1 VALUES (1,'Bozo','USA'),(2,'Ronald','USA'),(3,'Kinko','IRE'),(4,'Mr. Floppy','GB');
SELECT @min_cid:=min(c_id), @max_cid:=max(c_id) from t1;
SELECT * FROM t1 WHERE c_id=@min_cid OR c_id=@max_cid;
SELECT * FROM t1 WHERE c_id=@min_cid OR c_id=@max_cid OR c_id=666;
ALTER TABLE t1 DROP PRIMARY KEY;
select * from t1 where c_id=@min_cid OR c_id=@max_cid;
drop table t1;

#
# Test system variables
#
set GLOBAL max_join_size=10;
set max_join_size=100;
show variables like 'max_join_size';
select * from information_schema.session_variables where variable_name like 'max_join_size';
--replace_result 18446744073709551615 HA_POS_ERROR 4294967295 HA_POS_ERROR
show global variables like 'max_join_size';
--replace_result 18446744073709551615 HA_POS_ERROR 4294967295 HA_POS_ERROR
select * from information_schema.global_variables where variable_name like 'max_join_size';
set GLOBAL max_join_size=2000;
show global variables like 'max_join_size';
select * from information_schema.global_variables where variable_name like 'max_join_size';
set max_join_size=DEFAULT;
--replace_result 18446744073709551615 HA_POS_ERROR 4294967295 HA_POS_ERROR
show variables like 'max_join_size';
--replace_result 18446744073709551615 HA_POS_ERROR 4294967295 HA_POS_ERROR
select * from information_schema.session_variables where variable_name like 'max_join_size';
set GLOBAL max_join_size=DEFAULT;
--replace_result 18446744073709551615 HA_POS_ERROR 4294967295 HA_POS_ERROR
show global variables like 'max_join_size';
--replace_result 18446744073709551615 HA_POS_ERROR 4294967295 HA_POS_ERROR
select * from information_schema.global_variables where variable_name like 'max_join_size';
set @@max_join_size=1000, @@global.max_join_size=2000;
select @@local.max_join_size, @@global.max_join_size;
select @@identity,  length(@@version)>0;
select @@VERSION=version();
select last_insert_id(345);
explain extended select last_insert_id(345);
select @@IDENTITY,last_insert_id(), @@identity;
explain extended select @@IDENTITY,last_insert_id(), @@identity;

set global concurrent_insert=2;
show variables like 'concurrent_insert';
select * from information_schema.session_variables where variable_name like 'concurrent_insert';
set global concurrent_insert=1;
show variables like 'concurrent_insert';
select * from information_schema.session_variables where variable_name like 'concurrent_insert';
set global concurrent_insert=0;
show variables like 'concurrent_insert';
select * from information_schema.session_variables where variable_name like 'concurrent_insert';
set global concurrent_insert=DEFAULT;
select @@concurrent_insert;

set default_storage_engine=MYISAM, default_storage_engine="HEAP", global default_storage_engine="MERGE";
show local variables like 'default_storage_engine';
select * from information_schema.session_variables where variable_name like 'default_storage_engine';
show global variables like 'default_storage_engine';
select * from information_schema.global_variables where variable_name like 'default_storage_engine';

set GLOBAL myisam_max_sort_file_size=2000000;
show global variables like 'myisam_max_sort_file_size';
select * from information_schema.global_variables where variable_name like 'myisam_max_sort_file_size';
set GLOBAL myisam_max_sort_file_size=default;
--replace_result 9223372036853727232 FILE_SIZE 2146435072 FILE_SIZE
show global variables like 'myisam_max_sort_file_size';
--replace_result 9223372036853727232 FILE_SIZE 2146435072 FILE_SIZE
select * from information_schema.global_variables where variable_name like 'myisam_max_sort_file_size';

# bug#22891: modified to take read-only SESSION net_buffer_length into account
set global net_retry_count=10, session net_retry_count=10;
set global net_buffer_length=1024, net_write_timeout=200, net_read_timeout=300;
show global variables like 'net_%';
select * from information_schema.global_variables where variable_name like 'net_%' order by 1;
show session variables like 'net_%';
select * from information_schema.session_variables where variable_name like 'net_%' order by 1;
set global net_buffer_length=8000, global net_read_timeout=900, net_write_timeout=1000;
show global variables like 'net_%';
select * from information_schema.global_variables where variable_name like 'net_%' order by 1;
set global net_buffer_length=1;
show global variables like 'net_buffer_length';
select * from information_schema.global_variables where variable_name like 'net_buffer_length';
#warning 1292
set global net_buffer_length=2000000000;
show global variables like 'net_buffer_length';
select * from information_schema.global_variables where variable_name like 'net_buffer_length';

set character set cp1251_koi8;
show variables like "character_set_client";
select * from information_schema.session_variables where variable_name like 'character_set_client';
select @@timestamp>0;

set @@rand_seed1=10000000,@@rand_seed2=1000000;
select ROUND(RAND(),5);


--echo
--echo ==+ Testing %alloc% system variables +==
--echo ==+ NOTE:  These values *must* be a multiple of 1024 +==
--echo ==+ Other values will be rounded down to nearest multiple +==
--echo
--echo ==+ Show initial values +==
SHOW VARIABLES WHERE variable_name IN ('range_alloc_block_size',
'query_alloc_block_size', 'query_prealloc_size',
'transaction_alloc_block_size', 'transaction_prealloc_size');

--echo ==+ information_schema data +==
SELECT * FROM information_schema.session_variables 
WHERE variable_name IN ('range_alloc_block_size',
'query_alloc_block_size', 'query_prealloc_size',
'transaction_alloc_block_size', 'transaction_prealloc_size') ORDER BY 1;
--echo Testing values that are multiples of 1024
set @@range_alloc_block_size=1024*15+1024;
set @@query_alloc_block_size=1024*15+1024*2;
set @@query_prealloc_size=1024*18-1024;
set @@transaction_alloc_block_size=1024*21-1024*1;
set @@transaction_prealloc_size=1024*21-2048;
--echo ==+ Check manipulated values ==+
select @@query_alloc_block_size;
SHOW VARIABLES WHERE variable_name IN ('range_alloc_block_size',
'query_alloc_block_size', 'query_prealloc_size',
'transaction_alloc_block_size', 'transaction_prealloc_size');
--echo ==+ information_schema data +==
SELECT * FROM information_schema.session_variables
WHERE variable_name IN ('range_alloc_block_size',
'query_alloc_block_size', 'query_prealloc_size',
'transaction_alloc_block_size', 'transaction_prealloc_size') ORDER BY 1;
--echo ==+ Manipulate variable values +==
--echo Testing values that are not 1024 multiples
set @@range_alloc_block_size=1024*16+1023;
set @@query_alloc_block_size=1024*17+2;
set @@query_prealloc_size=1024*18-1023;
set @@transaction_alloc_block_size=1024*20-1;
set @@transaction_prealloc_size=1024*21-1;
--echo ==+ Check manipulated values ==+
SHOW VARIABLES WHERE variable_name IN ('range_alloc_block_size',
'query_alloc_block_size', 'query_prealloc_size',
'transaction_alloc_block_size', 'transaction_prealloc_size');
--echo ==+ information_schema data +==
SELECT * FROM information_schema.session_variables 
WHERE variable_name IN ('range_alloc_block_size',
'query_alloc_block_size', 'query_prealloc_size',
'transaction_alloc_block_size', 'transaction_prealloc_size') ORDER BY 1;
--echo ==+ Set values back to the default values +==
set @@range_alloc_block_size=default;
set @@query_alloc_block_size=default, @@query_prealloc_size=default;
set transaction_alloc_block_size=default, @@transaction_prealloc_size=default;
--echo ==+ Check the values now that they are reset +==
SHOW VARIABLES WHERE variable_name IN ('range_alloc_block_size',
'query_alloc_block_size', 'query_prealloc_size',
'transaction_alloc_block_size', 'transaction_prealloc_size');

#
# Bug #10904 Illegal mix of collations between
# a system variable and a constant
#
SELECT @@version LIKE 'non-existent';
SELECT @@version_compile_os LIKE 'non-existent';

# The following should give errors

--error ER_UNKNOWN_SYSTEM_VARIABLE
set unknown_variable=1;
--error ER_WRONG_TYPE_FOR_VAR
set max_join_size="hello";
--error ER_UNKNOWN_STORAGE_ENGINE
set default_storage_engine=UNKNOWN_TABLE_TYPE;
--error ER_WRONG_VALUE_FOR_VAR
set default_storage_engine=MERGE, sql_warnings=NULL;
show local variables like 'default_storage_engine';
--error ER_UNKNOWN_CHARACTER_SET
set character_set_client=UNKNOWN_CHARACTER_SET;
--error ER_UNKNOWN_COLLATION
set collation_connection=UNKNOWN_COLLATION;
--error ER_WRONG_VALUE_FOR_VAR
set character_set_client=NULL;
--error ER_WRONG_VALUE_FOR_VAR
set collation_connection=NULL;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
select @@global.timestamp;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR 
set @@version='';
--error ER_GLOBAL_VARIABLE
set @@concurrent_insert=1;
--error ER_GLOBAL_VARIABLE
set myisam_max_sort_file_size=100;
--error ER_WRONG_VALUE_FOR_VAR
set @@SQL_WARNINGS=NULL;

# Test setting all variables

set autocommit=1;
select @@autocommit;
set global binlog_cache_size=100;
set bulk_insert_buffer_size=100;
set character set cp1251_koi8;
set character set default;
set @@global.concurrent_insert=1;
set global connect_timeout=100;
select @@delay_key_write;
set global delay_key_write="OFF";
select @@delay_key_write;
set global delay_key_write=ALL;
select @@delay_key_write;
set global delay_key_write=1;
select @@delay_key_write;
set global delayed_insert_limit=100;
set global delayed_insert_timeout=100;
set global delayed_queue_size=100;
set global flush=1;
set global flush_time=100;
set insert_id=1;
set interactive_timeout=100;
set join_buffer_size=100;
set last_insert_id=1;
set global local_infile=1;
set long_query_time=0.000001;
select @@long_query_time;
set long_query_time=100.000001;
select @@long_query_time;
set low_priority_updates=1;
set global max_allowed_packet=100;
set global max_binlog_cache_size=100;
set global max_binlog_size=100;
set global max_connect_errors=100;
set global max_connections=100;
set global max_delayed_threads=100;
set max_heap_table_size=100;
set max_join_size=100;
set max_sort_length=100;
set global max_user_connections=100;
set global max_write_lock_count=100;
set myisam_sort_buffer_size=100;
set global net_buffer_length=100;
set net_read_timeout=100;
set net_write_timeout=100;
set read_buffer_size=100;
set read_rnd_buffer_size=100;
set global server_id=100;
set global slow_launch_time=100;
set sort_buffer_size=100;
set @@max_sp_recursion_depth=10;
select @@max_sp_recursion_depth;
set @@max_sp_recursion_depth=0;
select @@max_sp_recursion_depth;
set sql_auto_is_null=1;
select @@sql_auto_is_null;
set @@sql_auto_is_null=0;
select @@sql_auto_is_null;
set sql_big_selects=1;
set sql_buffer_result=1;
set sql_log_bin=1;
set sql_log_off=1;
set sql_quote_show_create=1;
set sql_safe_updates=1;
set sql_select_limit=1;
# reset it, so later tests don't get confused
set sql_select_limit=default;
set sql_warnings=1;
set @save_table_open_cache=@@table_open_cache;
set global table_open_cache=100;
set default_storage_engine=myisam;
set global thread_cache_size=100;
set timestamp=1, timestamp=default;
set tmp_table_size=1024;
set tx_isolation="READ-COMMITTED";
set wait_timeout=100;
set log_warnings=1;
set global log_warnings=1;

#
# Bugs: #20392: INSERT_ID session variable has weird value
#
select @@session.insert_id;
set @save_insert_id=@@session.insert_id;
set session insert_id=20;
select @@session.insert_id;

set session last_insert_id=100;
select @@session.insert_id;
select @@session.last_insert_id;
select @@session.insert_id;

set @@session.insert_id=@save_insert_id;
select @@session.insert_id;

#
# key buffer
#

create table t1 (a int not null auto_increment, primary key(a));
create table t2 (a int not null auto_increment, primary key(a));
insert into t1 values(null),(null),(null);
insert into t2 values(null),(null),(null);
set global key_buffer_size=100000;
select @@key_buffer_size;
select * from t1 where a=2;
select * from t2 where a=3;
check table t1,t2;
select max(a) +1, max(a) +2 into @xx,@yy from t1;
drop table t1,t2;

#
# error conditions
#

--error ER_UNKNOWN_SYSTEM_VARIABLE
select @@xxxxxxxxxx;
select 1;

--error ER_INCORRECT_GLOBAL_LOCAL_VAR
select @@session.key_buffer_size;

--error ER_GLOBAL_VARIABLE
set ft_boolean_syntax = @@init_connect;
--error ER_WRONG_VALUE_FOR_VAR
set global ft_boolean_syntax = @@init_connect;
--error ER_GLOBAL_VARIABLE
set init_connect = NULL;
set global init_connect = NULL;
--error ER_GLOBAL_VARIABLE
set ft_boolean_syntax = @@init_connect;
--error ER_WRONG_VALUE_FOR_VAR
set global ft_boolean_syntax = @@init_connect;

# Bug#3754 SET GLOBAL myisam_max_sort_file_size doesn't work as
# expected: check that there is no overflow when 64-bit unsigned
# variables are set

set global myisam_max_sort_file_size=4294967296;
--replace_result 4294967296 MAX_FILE_SIZE 2146435072 MAX_FILE_SIZE
show global variables like 'myisam_max_sort_file_size';
--replace_result 4294967296 MAX_FILE_SIZE 2146435072 MAX_FILE_SIZE
select * from information_schema.global_variables where variable_name like 'myisam_max_sort_file_size';
set global myisam_max_sort_file_size=default;

#
# swap
#

# set some variables to play with
set @@global.max_user_connections=10, @@local.max_join_size=1000;

select @@global.max_user_connections,@@local.max_join_size;
set @svc=@@global.max_user_connections, @svj=@@local.max_join_size;
select @@global.max_user_connections,@@local.max_join_size;
set @@global.max_user_connections=111,@@local.max_join_size=222;
select @@global.max_user_connections,@@local.max_join_size;
set @@global.max_user_connections=@@local.max_join_size,@@local.max_join_size=@@global.max_user_connections;
select @@global.max_user_connections,@@local.max_join_size;
set @@global.max_user_connections=@svc, @@local.max_join_size=@svj;
select @@global.max_user_connections,@@local.max_join_size;
set @a=1, @b=2;
set @a=@b, @b=@a;
select @a, @b;
set @@global.max_user_connections=@my_max_user_connections;

#
# Bug#2586:Disallow global/session/local as structured var. instance names
#
--error ER_UNKNOWN_STRUCTURED_VARIABLE
set @@global.global.key_buffer_size= 1;
--error ER_UNKNOWN_STRUCTURED_VARIABLE
set GLOBAL global.key_buffer_size= 1;
--error ER_PARSE_ERROR
SELECT @@global.global.key_buffer_size;
--error ER_PARSE_ERROR
SELECT @@global.session.key_buffer_size;
--error ER_PARSE_ERROR
SELECT @@global.local.key_buffer_size;

# BUG#5135: cannot turn on log_warnings with SET in 4.1 (and 4.0)
set @tstlw = @@log_warnings;
show global variables like 'log_warnings';
select * from information_schema.global_variables where variable_name like 'log_warnings';
set global log_warnings = 0;
show global variables like 'log_warnings';
select * from information_schema.global_variables where variable_name like 'log_warnings';
set global log_warnings = 42;
show global variables like 'log_warnings';
select * from information_schema.global_variables where variable_name like 'log_warnings';
set global log_warnings = @tstlw;
show global variables like 'log_warnings';
select * from information_schema.global_variables where variable_name like 'log_warnings';

#
# BUG#4788 show create table provides incorrect statement
#
# What default width have numeric types?
create table t1 (
  c1 tinyint,
  c2 smallint,
  c3 mediumint,
  c4 int,
  c5 bigint);
show create table t1;
drop table t1;
#
# What types and widths have variables?
set @arg00= 8, @arg01= 8.8, @arg02= 'a string', @arg03= 0.2e0;
create table t1 as select @arg00 as c1, @arg01 as c2, @arg02 as c3, @arg03 as c4;
show create table t1;
drop table t1;


#
# Bug #6993: myisam_data_pointer_size
# Wrong bug report, data pointer size must be restricted to 7,
# setting to 8 will not work on all computers, myisamchk and
# the server may see a wrong value, such as 0 or negative number
# if 8 bytes is set.
#

SET GLOBAL MYISAM_DATA_POINTER_SIZE= 7;
SHOW VARIABLES LIKE 'MYISAM_DATA_POINTER_SIZE';
SELECT * FROM INFORMATION_SCHEMA.SESSION_VARIABLES WHERE VARIABLE_NAME LIKE 'MYISAM_DATA_POINTER_SIZE';

#
# Bug #6958: negative arguments to integer options wrap around
#

SET GLOBAL table_open_cache=-1;
SHOW VARIABLES LIKE 'table_open_cache';
SELECT * FROM INFORMATION_SCHEMA.SESSION_VARIABLES WHERE VARIABLE_NAME LIKE 'table_open_cache';
SET GLOBAL table_open_cache=@save_table_open_cache;

#
# Bugs12363: character_set_results is nullable,
# but value_ptr returns string "NULL"
#
set character_set_results=NULL;
select ifnull(@@character_set_results,"really null");
set names latin1;

#
# Tests for lc_time_names
# Note, when adding new locales, please fix ID accordingly:
# - to test the last ID (currently 108)
# - and the next after the last (currently 109)
#
--echo *** Various tests with LC_TIME_NAMES
--echo *** LC_TIME_NAMES: testing case insensitivity
set @@lc_time_names='ru_ru';
select @@lc_time_names;
--echo *** LC_TIME_NAMES: testing with a user variable
set @lc='JA_JP';
set @@lc_time_names=@lc;
select @@lc_time_names;
--echo *** LC_TIME_NAMES: testing with string expressions
set lc_time_names=concat('de','_','DE');
select @@lc_time_names;
--error ER_UNKNOWN_LOCALE
set lc_time_names=concat('de','+','DE');
select @@lc_time_names;
--echo LC_TIME_NAMES: testing with numeric expressions
set @@lc_time_names=1+2;
select @@lc_time_names;
--error ER_WRONG_TYPE_FOR_VAR
set @@lc_time_names=1/0;
select @@lc_time_names;
set lc_time_names=en_US;
--echo LC_TIME_NAMES: testing NULL and a negative number:
--error ER_WRONG_VALUE_FOR_VAR
set lc_time_names=NULL;
--error ER_UNKNOWN_LOCALE
set lc_time_names=-1;
select @@lc_time_names;
--echo LC_TIME_NAMES: testing locale with the last ID:
set lc_time_names=110;
select @@lc_time_names;
--echo LC_TIME_NAMES: testing a number beyond the valid ID range:
--error ER_UNKNOWN_LOCALE
set lc_time_names=111;
select @@lc_time_names;
--echo LC_TIME_NAMES: testing that 0 is en_US:
set lc_time_names=0;
select @@lc_time_names;

#
# Bug #22648 LC_TIME_NAMES: Setting GLOBAL has no effect
#
select @@global.lc_time_names, @@lc_time_names;
set @@global.lc_time_names=fr_FR;
select @@global.lc_time_names, @@lc_time_names;
connect (con1,localhost,root,,);
connection con1;
select @@global.lc_time_names, @@lc_time_names;
set @@lc_time_names=ru_RU;
select @@global.lc_time_names, @@lc_time_names;
disconnect con1;
connection default;
select @@global.lc_time_names, @@lc_time_names;
set lc_time_names=default;
select @@global.lc_time_names, @@lc_time_names;
set @@global.lc_time_names=default;
select @@global.lc_time_names, @@lc_time_names;
set @@lc_time_names=default;
select @@global.lc_time_names, @@lc_time_names;


#
# Bug #13334: query_prealloc_size default less than minimum
#
set @test = @@query_prealloc_size;
set @@query_prealloc_size = @test;
select @@query_prealloc_size = @test;

#
# Bug#31588 buffer overrun when setting variables
#
# Buffer-size Off By One. Should throw valgrind-warning without fix #31588.
--error ER_WRONG_VALUE_FOR_VAR
set global sql_mode=repeat('a',80);

--echo End of 4.1 tests

#
# Bug#6282 Packet error with SELECT INTO
# 

create table t1 (a int);
select a into @x from t1;
show warnings;
drop table t1;

#
# Bug #10339: read only variables.
#

--error ER_INCORRECT_GLOBAL_LOCAL_VAR
set @@warning_count=1;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
set @@global.error_count=1;

#
# Bug #10351: Setting ulong variable to > MAX_ULONG fails on 32-bit platform
#

--disable_warnings
set @@max_heap_table_size= 4294967296;
select @@max_heap_table_size > 0;
set global max_heap_table_size= 4294967296;
select @@max_heap_table_size > 0;
set @@max_heap_table_size= 4294967296;
select @@max_heap_table_size > 0;
--enable_warnings

#
# Bug #11775 Variable character_set_system does not exist (sometimes)
#
select @@character_set_system;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
set global character_set_system = latin1;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
set @@global.version_compile_os='234';

#
# Check character_set_filesystem variable
#
set character_set_filesystem=latin1;
select @@character_set_filesystem;
set @@global.character_set_filesystem=latin2;
set character_set_filesystem=latin1;
select @@character_set_filesystem;
set @@global.character_set_filesystem=latin2;
set character_set_filesystem=default;
select @@character_set_filesystem;
set @@global.character_set_filesystem=default;
select @@global.character_set_filesystem;

#
# Bug #17849: Show sql_big_selects in SHOW VARIABLES
#
set @old_sql_big_selects = @@sql_big_selects;
set @@sql_big_selects = 1;
show variables like 'sql_big_selects';
select * from information_schema.session_variables where variable_name like 'sql_big_selects';
set @@sql_big_selects = @old_sql_big_selects;

#
# Bug #16195: SHOW VARIABLES doesn't report correctly sql_warnings and
# sql_notes values
# 
set @@sql_notes = 0, @@sql_warnings = 0;
show variables like 'sql_notes';
select * from information_schema.session_variables where variable_name like 'sql_notes';
show variables like 'sql_warnings';
select * from information_schema.session_variables where variable_name like 'sql_warnings';
set @@sql_notes = 1, @@sql_warnings = 1;
show variables like 'sql_notes';
select * from information_schema.session_variables where variable_name like 'sql_notes';
show variables like 'sql_warnings';
select * from information_schema.session_variables where variable_name like 'sql_warnings';

#
# Bug #12792: @@system_time_zone is not SELECTable.
#
# Don't actually output, since it depends on the system
--replace_column 1 #
select @@system_time_zone;

#
# Bug #15684: system variables cannot be SELECTed (e.g. @@version_comment)
#
# Don't actually output, since it depends on the system
--replace_column 1 # 2 # 3 # 4 #
select @@version, @@version_comment, @@version_compile_machine,
       @@version_compile_os;

#
# Bug #1039: make tmpdir and datadir available as @@variables (also included
# basedir)
#
# Don't actually output, since it depends on the system
--replace_column 1 # 2 # 3 #
select @@basedir, @@datadir, @@tmpdir;
--replace_column 2 #
show variables like 'basedir';
--replace_column 2 #
select * from information_schema.session_variables where variable_name like 'basedir';
--replace_column 2 #
show variables like 'datadir';
--replace_column 2 #
select * from information_schema.session_variables where variable_name like 'datadir';
--replace_column 2 #
show variables like 'tmpdir';
--replace_column 2 #
select * from information_schema.session_variables where variable_name like 'tmpdir';

#
# Bug #19606: make ssl settings available via SHOW VARIABLES and @@variables
# 
# Don't actually output, since it depends on the system
set sort_buffer_size=1024*8;
--replace_column 1 # 2 # 3 # 4 # 5 #
select @@ssl_ca, @@ssl_capath, @@ssl_cert, @@ssl_cipher, @@ssl_key;
--replace_column 2 #
show variables like 'ssl%';
--replace_column 2 #
select * from information_schema.session_variables where variable_name like 'ssl%' order by 1;

#
# Bug #19616: make log_queries_not_using_indexes available in SHOW VARIABLES
# and as @@log_queries_not_using_indexes
#
select @@log_queries_not_using_indexes;
show variables like 'log_queries_not_using_indexes';
select * from information_schema.session_variables where variable_name like 'log_queries_not_using_indexes';

#
# Bug#20908: Crash if select @@""
#
--error ER_PARSE_ERROR
select @@"";
--error ER_PARSE_ERROR
select @@&;
--error ER_PARSE_ERROR
select @@@;

#
# Bug#20166 mysql-test-run.pl does not test system privilege tables creation
#
# Don't actually output, since it depends on the system
--replace_column 1 #
select @@hostname;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
set @@hostname= "anothername";
--replace_column 2 #
show variables like 'hostname';

--echo #
--echo # BUG#37408 - Compressed MyISAM files should not require/use mmap()
--echo #
--echo # Test 'myisam_mmap_size' option is not dynamic
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@myisam_mmap_size= 500M;


--echo #
--echo # Bug #52315: utc_date() crashes when system time > year 2037
--echo #

--error 0, ER_WRONG_VALUE_FOR_VAR
SET TIMESTAMP=2*1024*1024*1024;
--echo #Should not crash
--disable_result_log
SELECT UTC_DATE();
--enable_result_log
SET TIMESTAMP=DEFAULT;


--echo End of 5.0 tests

#
# Bug#36446: Attempt to set @@join_buffer_size to its minimum value
#            produces spurious warning
#

# set to 1 so mysqld will correct to minimum (+ warn)
set join_buffer_size=1;
# save minimum
set @save_join_buffer_size=@@join_buffer_size;
# set minimum
set join_buffer_size=@save_join_buffer_size;

# This is at the very after the versioned tests, since it involves doing
# cleanup
#
# Bug #19263: variables.test doesn't clean up after itself (II/II --
# restore)
#
set global binlog_cache_size         =@my_binlog_cache_size;
set global connect_timeout           =@my_connect_timeout;
set global delayed_insert_timeout    =@my_delayed_insert_timeout;
set global delayed_queue_size        =@my_delayed_queue_size;
set global flush                     =@my_flush;
set global flush_time                =@my_flush_time;
set global key_buffer_size           =@my_key_buffer_size;
set global max_binlog_cache_size     =@my_max_binlog_cache_size;
set global max_binlog_size           =@my_max_binlog_size;
set global max_connect_errors        =@my_max_connect_errors;
set global max_connections           =@my_max_connections;
set global max_delayed_threads       =@my_max_delayed_threads;
set global max_heap_table_size       =@my_max_heap_table_size;
set global max_insert_delayed_threads=@my_max_insert_delayed_threads;
set global max_join_size             =@my_max_join_size;
set global max_user_connections      =@my_max_user_connections;
set global max_write_lock_count      =default;
set global myisam_data_pointer_size  =@my_myisam_data_pointer_size;
set global myisam_max_sort_file_size =@my_myisam_max_sort_file_size;
set global net_buffer_length         =@my_net_buffer_length;
set global net_write_timeout         =@my_net_write_timeout;
set global net_read_timeout          =@my_net_read_timeout;
set global server_id                 =@my_server_id;
set global slow_launch_time          =@my_slow_launch_time;
set global default_storage_engine    =@my_storage_engine;
set global thread_cache_size         =@my_thread_cache_size;
set global max_allowed_packet        =@my_max_allowed_packet;
set global delay_key_write           =@my_delay_key_write;
set global join_buffer_size          =@my_join_buffer_size;
set global log_warnings              =@my_log_warnings;
set global local_infile              =@my_local_infile;

#
# Bug#28580 Repeatation of status variables
#
--replace_column 2 #
show global variables where Variable_name='table_definition_cache';
# Note: table_lock_wait_timeout no longer exists. See bug#45225.

###########################################################################

--echo
--echo # --
--echo # -- Bug#34820: log_output can be set to illegal value.
--echo # --

--error ER_WRONG_VALUE_FOR_VAR
SET GLOBAL log_output = '';

--error ER_WRONG_VALUE_FOR_VAR
SET GLOBAL log_output = 0;

--echo
--echo # -- End of Bug#34820.

#
# Bug#28234 - global/session scope - documentation vs implementation
#
--echo
--echo #
SHOW VARIABLES like 'ft_max_word_len';
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT @@session.ft_max_word_len;
SELECT @@global.ft_max_word_len;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@session.ft_max_word_len= 7;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@global.ft_max_word_len= 7;
#
--echo #
SHOW VARIABLES like 'ft_min_word_len';
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT @@session.ft_min_word_len;
SELECT @@global.ft_min_word_len;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@session.ft_min_word_len= 7;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@global.ft_min_word_len= 7;
#
--echo #
SHOW VARIABLES like 'ft_query_expansion_limit';
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT @@session.ft_query_expansion_limit;
SELECT @@global.ft_query_expansion_limit;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@session.ft_query_expansion_limit= 7;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@global.ft_query_expansion_limit= 7;
#
--echo #
SHOW VARIABLES like 'ft_stopword_file';
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT @@session.ft_stopword_file;
SELECT @@global.ft_stopword_file;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@session.ft_stopword_file= 'x';
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@global.ft_stopword_file= 'x';
#
# Additional variables fixed.
#
--echo #
--replace_column 2 #
SHOW VARIABLES like 'back_log';
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT @@session.back_log;
SELECT @@global.back_log > 0;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@session.back_log= 7;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@global.back_log= 7;
#
--echo #
--replace_column 2 #
SHOW VARIABLES like 'large_files_support';
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT @@session.large_files_support;
--replace_column 1 #
SELECT @@global.large_files_support;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@session.large_files_support= true;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@global.large_files_support= true;
#
--echo #
--replace_column 2 #
SHOW VARIABLES like 'character_sets_dir';
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT @@session.character_sets_dir;
--replace_column 1 #
SELECT @@global.character_sets_dir;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@session.character_sets_dir= 'x';
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@global.character_sets_dir= 'x';
#
--echo #
--replace_column 2 #
SHOW VARIABLES like 'init_file';
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT @@session.init_file;
--replace_column 1 #
SELECT @@global.init_file;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@session.init_file= 'x';
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@global.init_file= 'x';
#
--echo #
--replace_column 2 #
SHOW VARIABLES like 'lc_messages_dir';
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT @@session.lc_messages_dir;
--replace_column 1 #
SELECT @@global.lc_messages_dir;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@session.lc_messages_dir= 'x';
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@global.lc_messages_dir= 'x';
#
--echo #
--replace_column 2 #
SHOW VARIABLES like 'large_page_size';
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT @@session.large_page_size;
--replace_column 1 #
SELECT @@global.large_page_size;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@session.large_page_size= 7;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@global.large_page_size= 7;
#
--echo #
--replace_column 2 #
SHOW VARIABLES like 'large_pages';
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT @@session.large_pages;
--replace_column 1 #
SELECT @@global.large_pages;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@session.large_pages= true;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@global.large_pages= true;
#
--echo #
SHOW VARIABLES like 'log_bin';
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT @@session.log_bin;
SELECT @@global.log_bin;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@session.log_bin= true;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@global.log_bin= true;
#
--echo #
--replace_column 2 #
SHOW VARIABLES like 'log_error';
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT @@session.log_error;
--replace_column 1 #
SELECT @@global.log_error;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@session.log_error= 'x';
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@global.log_error= 'x';
#
--echo #
--replace_column 2 #
SHOW VARIABLES like 'lower_case_file_system';
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT @@session.lower_case_file_system;
--replace_column 1 #
SELECT @@global.lower_case_file_system;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@session.lower_case_file_system= true;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@global.lower_case_file_system= true;
#
--echo #
--replace_column 2 #
SHOW VARIABLES like 'lower_case_table_names';
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT @@session.lower_case_table_names;
--replace_column 1 #
SELECT @@global.lower_case_table_names;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@session.lower_case_table_names= 7;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@global.lower_case_table_names= 7;
#
--echo #
SHOW VARIABLES like 'myisam_recover_options';
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT @@session.myisam_recover_options;
SELECT @@global.myisam_recover_options;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@session.myisam_recover_options= 'x';
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@global.myisam_recover_options= 'x';
#
--echo #
--replace_column 2 #
SHOW VARIABLES like 'open_files_limit';
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT @@session.open_files_limit;
--replace_column 1 #
SELECT @@global.open_files_limit;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@session.open_files_limit= 7;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@global.open_files_limit= 7;
#
--echo #
--replace_column 2 #
SHOW VARIABLES like 'pid_file';
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT @@session.pid_file;
--replace_column 1 #
SELECT @@global.pid_file;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@session.pid_file= 'x';
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@global.pid_file= 'x';
#
--echo #
--replace_column 2 #
SHOW VARIABLES like 'plugin_dir';
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT @@session.plugin_dir;
--replace_column 1 #
SELECT @@global.plugin_dir;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@session.plugin_dir= 'x';
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@global.plugin_dir= 'x';
#
--echo #
--replace_column 2 #
SHOW VARIABLES like 'port';
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT @@session.port;
--replace_column 1 #
SELECT @@global.port;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@session.port= 7;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@global.port= 7;
#
--echo #
SHOW VARIABLES like 'protocol_version';
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT @@session.protocol_version;
SELECT @@global.protocol_version;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@session.protocol_version= 7;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@global.protocol_version= 7;
#
--echo #
SHOW VARIABLES like 'skip_external_locking';
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT @@session.skip_external_locking;
SELECT @@global.skip_external_locking;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@session.skip_external_locking= true;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@global.skip_external_locking= true;
#
--echo #
SHOW VARIABLES like 'skip_networking';
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT @@session.skip_networking;
SELECT @@global.skip_networking;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@session.skip_networking= true;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@global.skip_networking= true;
#
--echo #
SHOW VARIABLES like 'skip_show_database';
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT @@session.skip_show_database;
SELECT @@global.skip_show_database;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@session.skip_show_database= true;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@global.skip_show_database= true;
#
--echo #
--replace_column 2 #
SHOW VARIABLES like 'thread_stack';
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT @@session.thread_stack;
--replace_column 1 #
SELECT @@global.thread_stack;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@session.thread_stack= 7;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@global.thread_stack= 7;
#

#
# Bug #40657 - assertion with out of range variables and traditional sql_mode
#

SELECT @@global.expire_logs_days INTO @old_eld;

SET GLOBAL expire_logs_days = -1;
--echo needs to've been adjusted (0)
SELECT @@global.expire_logs_days;

SET GLOBAL expire_logs_days = 11;
SET @old_mode=@@sql_mode;
SET SESSION sql_mode = 'TRADITIONAL';
--error ER_WRONG_VALUE_FOR_VAR
SET GLOBAL expire_logs_days = 100;
--echo needs to be unchanged (11)
SELECT @@global.expire_logs_days;
SET SESSION sql_mode = @old_mode;

SET GLOBAL expire_logs_days = 100;
--echo needs to've been adjusted (99)
SELECT @@global.expire_logs_days;

SET GLOBAL expire_logs_days = 11;
SET GLOBAL expire_logs_days = 99;
--echo needs to pass with no warnings (99)
SELECT @@global.expire_logs_days;

# cleanup
SET GLOBAL expire_logs_days = @old_eld;

# show that warning uses underscore (sysvar-name), not hyphens (option-name)
SET GLOBAL auto_increment_offset=-1;
SET GLOBAL auto_increment_offset=0;



#
# Bug#41030 Wrong meta data (incorrect fieldlen)
#

--enable_metadata
select @@default_storage_engine;
--disable_metadata

#
# Bug#36540: CREATE EVENT and ALTER EVENT statements fail with large server_id
#

SET @old_server_id = @@GLOBAL.server_id;
SET GLOBAL server_id = (1 << 32) - 1;
SELECT @@GLOBAL.server_id;
SET GLOBAL server_id = (1 << 32);
SELECT @@GLOBAL.server_id;
SET GLOBAL server_id = (1 << 60);
SELECT @@GLOBAL.server_id;
SET GLOBAL server_id = 0;
SELECT @@GLOBAL.server_id;
SET GLOBAL server_id = -1;
SELECT @@GLOBAL.server_id;
SET GLOBAL server_id = @old_server_id;

--echo #
--echo # BUG#10206 - InnoDB: Transaction requiring Max_BinLog_Cache_size > 4GB always rollsback
--echo #

SET @old_max_binlog_cache_size = @@GLOBAL.max_binlog_cache_size;
--echo # Set the max_binlog_cache_size to size more than 4GB. 
--disable_warnings
SET GLOBAL max_binlog_cache_size = 5 * 1024 * 1024 * 1024;
--enable_warnings
--replace_result 5368709120 max_size 4294963200 max_size
SELECT @@GLOBAL.max_binlog_cache_size;
SET GLOBAL max_binlog_cache_size = @old_max_binlog_cache_size;

--echo #
--echo # Bug #37168 : Missing variable - skip_name_resolve
--echo #

SELECT @@skip_name_resolve >= 0;
--replace_column 2 #
SHOW VARIABLES LIKE 'skip_name_resolve';

--echo #
--echo # Bug #43233 : Some server variables are clipped during "update,"
--echo #              not "check" stage
--echo #

SET @kbs=@@global.key_buffer_size;
SET @kcbs=@@global.key_cache_block_size;

--echo throw errors in STRICT mode
SET SQL_MODE=STRICT_ALL_TABLES;

# sys_var_ulonglong_ptr: sys_max_binlog_cache_size
--error ER_WRONG_VALUE_FOR_VAR
SET @@global.max_binlog_cache_size=-1;

# sys_var_thd_ha_rows: "max_join_size" et al.
--error ER_WRONG_VALUE_FOR_VAR
SET @@global.max_join_size=0;

# sys_var_key_buffer_size: "key_buffer_size"
--error ER_WARN_CANT_DROP_DEFAULT_KEYCACHE
SET @@global.key_buffer_size=0;

# sys_var_key_cache_long: "key_cache_block_size" et al.
--error ER_WRONG_VALUE_FOR_VAR
SET @@global.key_cache_block_size=0;

--echo throw warnings in default mode
SET SQL_MODE=DEFAULT;

SET @@global.max_binlog_cache_size=-1;
SET @@global.max_join_size=0;
# this is an exception. since this is a new error/warning, let's stay
# compatible with the upcoming 5.6.
--error ER_WARN_CANT_DROP_DEFAULT_KEYCACHE
SET @@global.key_buffer_size=0;
SET @@global.key_cache_block_size=0;

# Restore variables
SET @@global.max_binlog_cache_size=DEFAULT;
SET @@global.max_join_size=DEFAULT;
SET @@global.key_buffer_size=@kbs;
SET @@global.key_cache_block_size=@kcbs;

--echo #
--echo # Bug#11766424  59527:
--echo # Assert in DECIMAL_BIN_SIZE: 
--echo # `SCALE >= 0 && PRECISION > 0 && SCALE <= PRE
--echo # This test also exposed a bug with sql_buffer_result
--echo #

CREATE TABLE t1(f1 DECIMAL(1,1) UNSIGNED);
INSERT INTO t1 VALUES (0.2),(0.1);
set @a=NULL;
set sql_buffer_result=0;
SELECT 1 as 'one' FROM t1 GROUP BY @a:= ROUND(f1);

explain SELECT 1 as 'one' FROM t1 GROUP BY @a:= (SELECT ROUND(f1) FROM t1 WHERE f1 = 0);
SELECT 1 as 'one' FROM t1 GROUP BY @a:= (SELECT ROUND(f1) FROM t1 WHERE f1 = 0);
SELECT 1 as 'one' FROM t1 GROUP BY @a:= (SELECT ROUND(f1) FROM t1 WHERE @a=f1);

set sql_buffer_result=1;
explain SELECT 1 as 'one' FROM t1 GROUP BY @a:= (SELECT ROUND(f1) FROM t1 WHERE f1 = 0);
SELECT 1 as 'one' FROM t1 GROUP BY @a:= (SELECT ROUND(f1) FROM t1 WHERE f1 = 0);
SELECT 1 as 'one' FROM t1 GROUP BY @a:= (SELECT ROUND(f1) FROM t1 WHERE @a=f1);

DROP TABLE t1;

set sql_buffer_result=0;

#
# Test of CREATE ... CAST
#

CREATE TABLE t1 AS SELECT @a:= CAST(1 AS UNSIGNED) AS a;
SHOW CREATE TABLE t1;
DROP TABLE t1;

--echo End of 5.1 tests

###########################################################################

--echo
--echo #
--echo # Bug#34828: OF is taken as OFF and a value of 0 is set for variable SQL_notes.
--echo #
--echo

--echo # Checking sql_notes...
SET @sql_notes_saved = @@sql_notes;

--echo
SET @@sql_notes = ON;
SELECT @@sql_notes;

--echo
--error ER_WRONG_VALUE_FOR_VAR
SET @@sql_notes = OF;
SELECT @@sql_notes;

--echo
SET @@sql_notes = OFF;
SELECT @@sql_notes;

--echo
SET @@sql_notes = @sql_notes_saved;

--echo
--echo # Checking delay_key_write...
SET @delay_key_write_saved = @@delay_key_write;

--echo
SET GLOBAL delay_key_write = ON;
SELECT @@delay_key_write;

--echo
--error ER_WRONG_VALUE_FOR_VAR
SET GLOBAL delay_key_write = OF;
SELECT @@delay_key_write;

--echo
--error ER_WRONG_VALUE_FOR_VAR
SET GLOBAL delay_key_write = AL;
SELECT @@delay_key_write;

--echo
SET GLOBAL delay_key_write = OFF;
SELECT @@delay_key_write;

--echo
SET GLOBAL delay_key_write = ALL;
SELECT @@delay_key_write;

--echo
SET GLOBAL delay_key_write = @delay_key_write_saved;

--echo
--echo # Checking sql_safe_updates...
SET @sql_safe_updates_saved = @@sql_safe_updates;

--echo
SET @@sql_safe_updates = ON;
SELECT @@sql_safe_updates;

--echo
--error ER_WRONG_VALUE_FOR_VAR
SET @@sql_safe_updates = OF;
SELECT @@sql_safe_updates;

--echo
SET @@sql_safe_updates = OFF;
SELECT @@sql_safe_updates;

--echo
SET @@sql_safe_updates = @sql_safe_updates_saved;

--echo
--echo # Checking foreign_key_checks...
SET @foreign_key_checks_saved = @@foreign_key_checks;

--echo
SET @@foreign_key_checks = ON;
SELECT @@foreign_key_checks;

--echo
--error ER_WRONG_VALUE_FOR_VAR
SET @@foreign_key_checks = OF;
SELECT @@foreign_key_checks;

--echo
SET @@foreign_key_checks = OFF;
SELECT @@foreign_key_checks;

--echo
SET @@foreign_key_checks = @foreign_key_checks_saved;

--echo
--echo # Checking unique_checks...
SET @unique_checks_saved = @@unique_checks;

--echo
SET @@unique_checks = ON;
SELECT @@unique_checks;

--echo
--error ER_WRONG_VALUE_FOR_VAR
SET @@unique_checks = OF;
SELECT @@unique_checks;

--echo
SET @@unique_checks = OFF;
SELECT @@unique_checks;

--echo
SET @@unique_checks = @unique_checks_saved;

--echo
--echo # Checking sql_buffer_result...
SET @sql_buffer_result_saved = @@sql_buffer_result;

--echo
SET @@sql_buffer_result = ON;
SELECT @@sql_buffer_result;

--echo
--error ER_WRONG_VALUE_FOR_VAR
SET @@sql_buffer_result = OF;
SELECT @@sql_buffer_result;

--echo
SET @@sql_buffer_result = OFF;
SELECT @@sql_buffer_result;

--echo
SET @@sql_buffer_result = @sql_buffer_result_saved;

--echo
--echo # Checking sql_quote_show_create...
SET @sql_quote_show_create_saved = @@sql_quote_show_create;

--echo
SET @@sql_quote_show_create = ON;
SELECT @@sql_quote_show_create;

--echo
--error ER_WRONG_VALUE_FOR_VAR
SET @@sql_quote_show_create = OF;
SELECT @@sql_quote_show_create;

--echo
SET @@sql_quote_show_create = OFF;
SELECT @@sql_quote_show_create;

--echo
SET @@sql_quote_show_create = @sql_quote_show_create_saved;

--echo
--echo # End of Bug#34828.
--echo

--echo # Make sure we can manipulate with autocommit in the
--echo # along with other variables.


--disable_warnings
drop table if exists t1;
drop function if exists t1_max;
drop function if exists t1_min;
--enable_warnings

set sql_mode="";
--disable_warnings
create table t1 (a int) engine=innodb;
--enable_warnings
set sql_mode=default;
insert into t1(a) values (0), (1);
create function t1_max() returns int return (select max(a) from t1);
create function t1_min() returns int return (select min(a) from t1);
select t1_min();
select t1_max();
set @@session.autocommit=t1_min(), @@session.autocommit=t1_max(),
    @@session.autocommit=t1_min(), @@session.autocommit=t1_max(),
    @@session.autocommit=t1_min(), @@session.autocommit=t1_max();

--echo # Cleanup.
drop table t1;
drop function t1_min;
drop function t1_max;


###########################################################################


--echo #
--echo # Bug #59884: setting charset to 2048 crashes
--echo #

--error ER_UNKNOWN_CHARACTER_SET
set session character_set_results = 2048;
--error ER_UNKNOWN_CHARACTER_SET
set session character_set_client=2048;
--error ER_UNKNOWN_CHARACTER_SET
set session character_set_connection=2048;
--error ER_UNKNOWN_CHARACTER_SET
set session character_set_server=2048;
--error ER_UNKNOWN_COLLATION
set session collation_server=2048;
--error ER_UNKNOWN_CHARACTER_SET
set session character_set_filesystem=2048;
--error ER_UNKNOWN_CHARACTER_SET
set session character_set_database=2048;
--error ER_UNKNOWN_COLLATION
set session collation_connection=2048;
--error ER_UNKNOWN_COLLATION
set session collation_database=2048;

#
# Bug #16044655 CRASH: SETTING DEFAULT VALUE FOR SOME VARIABLES
#
--error ER_NO_DEFAULT
set session rand_seed1=DEFAULT;

#
# Bug #14211565 CRASH WHEN ATTEMPTING TO SET SYSTEM VARIABLE TO RESULT OF VALUES()
#
--error ER_BAD_FIELD_ERROR
set autocommit = value(v);

#
# MDEV-6673 I_S.SESSION_VARIABLES shows global values
#
set session sql_mode=ansi_quotes;
select * from information_schema.session_variables where variable_name='sql_mode';
show global status like 'foobar';
select * from information_schema.session_variables where variable_name='sql_mode';

--echo End of 5.5 tests

#
# test Item_func_get_system_var::print()
#
explain extended select @@VERsion from dual where rand() > @@verSION;
explain extended select @@SESsion.SQL_mode from dual where rand() > @@sesSION.sql_MODE;
explain extended select @@GLObal.COLLATION_connection from dual where rand() > @@gloBAL.collation_CONNECTION;
explain extended select @@FOObar.KEY_BUFfer_size from dual where rand() > @@fooBAR.key_bufFER_SIZE;

--echo #
--echo # MDEV-15316 Assertion `(thd->lex)->var_list.is_empty()' failed in MYSQLparse
--echo #

SET GLOBAL mc.key_cache_age_threshold=100, mc.key_cache_block_size=1024;
SET GLOBAL mc.key_buffer_size= 0 /*cleanup*/;