# # test variables # drop table if exists t1; set @`test`=1,@TEST=3,@select=2,@t5=1.23456; select @test,@`select`,@TEST,@not_used; set @test_int=10,@test_double=1e-10,@test_string="abcdeghi",@test_string2="abcdefghij",@select=NULL; 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; 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 max_join_size=100; show variables like 'max_join_size'; --replace_result 18446744073709551615 HA_POS_ERROR 4294967295 HA_POS_ERROR show global variables like 'max_join_size'; set GLOBAL max_join_size=2000; show global variables 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'; set GLOBAL max_join_size=DEFAULT; --replace_result 18446744073709551615 HA_POS_ERROR 4294967295 HA_POS_ERROR show global variables 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); select @@IDENTITY,last_insert_id(), @@identity; set big_tables=OFF, big_tables=ON, big_tables=0, big_tables=1, big_tables="OFF", big_tables="ON"; set global concurrent_insert=ON; show variables like 'concurrent_insert'; set global concurrent_insert=1; show variables like 'concurrent_insert'; set global concurrent_insert=0; show variables like 'concurrent_insert'; set global concurrent_insert=OFF; show variables like 'concurrent_insert'; set global concurrent_insert=DEFAULT; show variables like 'concurrent_insert'; set table_type=MYISAM, table_type="HEAP", global table_type="INNODB"; show local variables like 'table_type'; show global variables like 'table_type'; set GLOBAL query_cache_size=100000; set GLOBAL myisam_max_sort_file_size=2000000; show global variables like 'myisam_max_sort_file_size'; set GLOBAL myisam_max_sort_file_size=default; show variables like 'myisam_max_sort_file_size'; 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; set session net_buffer_length=2048, net_write_timeout=500, net_read_timeout=600; show global variables like 'net_%'; show session variables like 'net_%'; set session net_buffer_length=8000, global net_read_timeout=900, net_write_timeout=1000; show global variables like 'net_%'; show session variables like 'net_%'; set net_buffer_length=1; show variables like 'net_buffer_length'; set net_buffer_length=2000000000; show variables like 'net_buffer_length'; set GLOBAL character set cp1251_koi8; show global variables like "convert_character_set"; set character set cp1251_koi8; show variables like "convert_character_set"; set global character set default, session character set default; show variables like "convert_character_set"; select @@timestamp>0; set @@rand_seed1=10000000,@@rand_seed2=1000000; select ROUND(RAND(),5); # The following should give errors --error 1231 set big_tables=OFFF; --error 1231 set big_tables="OFFF"; --error 1193 set unknown_variable=1; --error 1232 set max_join_size="hello"; --error 1231 set table_type=UNKNOWN_TABLE_TYPE; --error 1231 set table_type=INNODB, big_tables=2; show local variables like 'table_type'; --error 1229 set SESSION query_cache_size=10000; --error 1230 set GLOBAL table_type=DEFAULT; --error 1115 set convert_character_set=UNKNOWN_CHARACTER_SET; --error 1115 set character set unknown; --error 1232 set character set 0; --error 1228 set global autocommit=1; --error 1228 select @@global.timestamp; --error 1193 set @@version=''; --error 1229 set @@concurrent_insert=1; --error 1228 set @@global.sql_auto_is_null=1; --error 1228 select @@global.sql_auto_is_null; --error 1229 set myisam_max_sort_file_size=100; --error 1229 set myisam_max_extra_sort_file_size=100; # Test setting all variables set autocommit=1; set big_tables=1; select @@autocommit, @@big_tables; set global binlog_cache_size=100; set bulk_insert_buffer_size=100; set convert_character_set=cp1251_koi8; set convert_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=100; set low_priority_updates=1; set 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 max_tmp_tables=100; set global max_user_connections=100; select @@max_user_connections; set global max_write_lock_count=100; set global myisam_max_extra_sort_file_size=100; select @@myisam_max_extra_sort_file_size; set global myisam_max_sort_file_size=100; set myisam_sort_buffer_size=100; set net_buffer_length=100; set net_read_timeout=100; set net_write_timeout=100; set global query_cache_limit=100; set global query_cache_size=100; set global query_cache_type=demand; set read_buffer_size=100; set read_rnd_buffer_size=100; set global rpl_recovery_rank=100; set global server_id=100; set global slave_net_timeout=100; set global slow_launch_time=100; set sort_buffer_size=100; 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_big_tables=1; set sql_buffer_result=1; set sql_log_bin=1; set sql_log_off=1; set sql_log_update=1; set sql_low_priority_updates=1; set sql_max_join_size=200; select @@sql_max_join_size,@@max_join_size; set sql_quote_show_create=1; set sql_safe_updates=1; set sql_select_limit=1; set global sql_slave_skip_counter=100; set sql_warnings=1; set global table_cache=100; set table_type=myisam; set global thread_cache_size=100; set timestamp=1, timestamp=default; set tmp_table_size=100; set tx_isolation="READ-COMMITTED"; set wait_timeout=100; set log_warnings=1; # # key buffer # DROP TABLE IF EXISTS t1,t2; 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; drop table t1,t2; # # error conditions # --error 1193 select @@xxxxxxxxxx; select 1;