mirror of
https://github.com/MariaDB/server.git
synced 2025-11-21 06:21:35 +03:00
bmove_allign -> bmove_align Added OLAP function ROLLUP Split mysql_fix_privilege_tables to a script and a .sql data file Added new (MEMROOT*) functions to avoid calling current_thd() when creating some common objects. Added table_alias_charset, for easier --lower-case-table-name handling Better SQL_MODE handling (Setting complex options also sets sub options) New (faster) assembler string functions for x86
332 lines
10 KiB
Plaintext
332 lines
10 KiB
Plaintext
drop table if exists t1,t2;
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set @`test`=1,@TEST=3,@select=2,@t5=1.23456;
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select @test,@`select`,@TEST,@not_used;
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@test @`select` @TEST @not_used
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1 2 3 NULL
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set @test_int=10,@test_double=1e-10,@test_string="abcdeghi",@test_string2="abcdefghij",@select=NULL;
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select @test_int,@test_double,@test_string,@test_string2,@select;
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@test_int @test_double @test_string @test_string2 @select
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10 1e-10 abcdeghi abcdefghij NULL
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set @test_int="hello",@test_double="hello",@test_string="hello",@test_string2="hello";
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select @test_int,@test_double,@test_string,@test_string2;
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@test_int @test_double @test_string @test_string2
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hello hello hello hello
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set @test_int="hellohello",@test_double="hellohello",@test_string="hellohello",@test_string2="hellohello";
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select @test_int,@test_double,@test_string,@test_string2;
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@test_int @test_double @test_string @test_string2
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hellohello hellohello hellohello hellohello
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set @test_int=null,@test_double=null,@test_string=null,@test_string2=null;
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select @test_int,@test_double,@test_string,@test_string2;
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@test_int @test_double @test_string @test_string2
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NULL NULL NULL NULL
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select @t1:=(@t2:=1)+@t3:=4,@t1,@t2,@t3;
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@t1:=(@t2:=1)+@t3:=4 @t1 @t2 @t3
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5 5 1 4
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select @t5;
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@t5
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1.23456
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CREATE TABLE t1 (c_id INT(4) NOT NULL, c_name CHAR(20), c_country CHAR(3), PRIMARY KEY(c_id));
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INSERT INTO t1 VALUES (1,'Bozo','USA'),(2,'Ronald','USA'),(3,'Kinko','IRE'),(4,'Mr. Floppy','GB');
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SELECT @min_cid:=min(c_id), @max_cid:=max(c_id) from t1;
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@min_cid:=min(c_id) @max_cid:=max(c_id)
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1 4
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SELECT * FROM t1 WHERE c_id=@min_cid OR c_id=@max_cid;
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c_id c_name c_country
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1 Bozo USA
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4 Mr. Floppy GB
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SELECT * FROM t1 WHERE c_id=@min_cid OR c_id=@max_cid OR c_id=666;
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c_id c_name c_country
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1 Bozo USA
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4 Mr. Floppy GB
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ALTER TABLE t1 DROP PRIMARY KEY;
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select * from t1 where c_id=@min_cid OR c_id=@max_cid;
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c_id c_name c_country
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1 Bozo USA
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4 Mr. Floppy GB
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drop table t1;
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set max_join_size=100;
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show variables like 'max_join_size';
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Variable_name Value
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max_join_size 100
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show global variables like 'max_join_size';
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Variable_name Value
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max_join_size 10
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set GLOBAL max_join_size=2000;
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show global variables like 'max_join_size';
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Variable_name Value
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max_join_size 2000
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set max_join_size=DEFAULT;
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show variables like 'max_join_size';
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Variable_name Value
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max_join_size 2000
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set GLOBAL max_join_size=DEFAULT;
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show global variables like 'max_join_size';
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Variable_name Value
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max_join_size HA_POS_ERROR
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set @@max_join_size=1000, @@global.max_join_size=2000;
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select @@local.max_join_size, @@global.max_join_size;
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@@session.max_join_size @@global.max_join_size
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1000 2000
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select @@identity, length(@@version)>0;
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@@identity length(@@version)>0
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0 1
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select @@VERSION=version();
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@@VERSION=version()
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1
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select last_insert_id(345);
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last_insert_id(345)
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345
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select @@IDENTITY,last_insert_id(), @@identity;
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@@identity last_insert_id() @@identity
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345 345 345
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set big_tables=OFF, big_tables=ON, big_tables=0, big_tables=1, big_tables="OFF", big_tables="ON";
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set global concurrent_insert=ON;
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show variables like 'concurrent_insert';
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Variable_name Value
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concurrent_insert ON
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set global concurrent_insert=1;
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show variables like 'concurrent_insert';
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Variable_name Value
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concurrent_insert ON
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set global concurrent_insert=0;
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show variables like 'concurrent_insert';
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Variable_name Value
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concurrent_insert OFF
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set global concurrent_insert=OFF;
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show variables like 'concurrent_insert';
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Variable_name Value
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concurrent_insert OFF
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set global concurrent_insert=DEFAULT;
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show variables like 'concurrent_insert';
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Variable_name Value
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concurrent_insert ON
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set table_type=MYISAM, table_type="HEAP", global table_type="INNODB";
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show local variables like 'table_type';
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Variable_name Value
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table_type HEAP
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show global variables like 'table_type';
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Variable_name Value
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table_type INNODB
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set GLOBAL query_cache_size=100000;
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set GLOBAL myisam_max_sort_file_size=2000000;
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show global variables like 'myisam_max_sort_file_size';
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Variable_name Value
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myisam_max_sort_file_size 1048576
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set GLOBAL myisam_max_sort_file_size=default;
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show variables like 'myisam_max_sort_file_size';
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Variable_name Value
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myisam_max_sort_file_size FILE_SIZE
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set global net_retry_count=10, session net_retry_count=10;
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set global net_buffer_length=1024, net_write_timeout=200, net_read_timeout=300;
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set session net_buffer_length=2048, net_write_timeout=500, net_read_timeout=600;
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show global variables like 'net_%';
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Variable_name Value
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net_buffer_length 1024
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net_read_timeout 300
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net_retry_count 10
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net_write_timeout 200
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show session variables like 'net_%';
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Variable_name Value
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net_buffer_length 2048
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net_read_timeout 600
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net_retry_count 10
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net_write_timeout 500
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set session net_buffer_length=8000, global net_read_timeout=900, net_write_timeout=1000;
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show global variables like 'net_%';
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Variable_name Value
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net_buffer_length 1024
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net_read_timeout 900
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net_retry_count 10
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net_write_timeout 1000
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show session variables like 'net_%';
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Variable_name Value
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net_buffer_length 7168
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net_read_timeout 600
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net_retry_count 10
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net_write_timeout 500
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set net_buffer_length=1;
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show variables like 'net_buffer_length';
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Variable_name Value
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net_buffer_length 1024
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set net_buffer_length=2000000000;
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show variables like 'net_buffer_length';
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Variable_name Value
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net_buffer_length 1048576
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set character set cp1251_koi8;
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show variables like "character_set_client";
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Variable_name Value
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character_set_client cp1251
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select @@timestamp>0;
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@@timestamp>0
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1
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set @@rand_seed1=10000000,@@rand_seed2=1000000;
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select ROUND(RAND(),5);
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ROUND(RAND(),5)
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0.02887
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set big_tables=OFFF;
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ERROR 42000: Variable 'big_tables' can't be set to the value of 'OFFF'
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set big_tables="OFFF";
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ERROR 42000: Variable 'big_tables' can't be set to the value of 'OFFF'
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set unknown_variable=1;
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ERROR HY000: Unknown system variable 'unknown_variable'
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set max_join_size="hello";
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ERROR 42000: Wrong argument type to variable 'max_join_size'
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set table_type=UNKNOWN_TABLE_TYPE;
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ERROR 42000: Variable 'table_type' can't be set to the value of 'UNKNOWN_TABLE_TYPE'
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set table_type=INNODB, big_tables=2;
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ERROR 42000: Variable 'big_tables' can't be set to the value of '2'
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show local variables like 'table_type';
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Variable_name Value
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table_type HEAP
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set SESSION query_cache_size=10000;
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ERROR HY000: Variable 'query_cache_size' is a GLOBAL variable and should be set with SET GLOBAL
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set GLOBAL table_type=DEFAULT;
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ERROR 42000: Variable 'table_type' doesn't have a default value
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set character_set_client=UNKNOWN_CHARACTER_SET;
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ERROR 42000: Unknown character set: 'UNKNOWN_CHARACTER_SET'
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set global autocommit=1;
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ERROR HY000: Variable 'autocommit' is a LOCAL variable and can't be used with SET GLOBAL
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select @@global.timestamp;
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ERROR HY000: Variable 'timestamp' is a LOCAL variable and can't be used with SET GLOBAL
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set @@version='';
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ERROR HY000: Unknown system variable 'version'
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set @@concurrent_insert=1;
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ERROR HY000: Variable 'concurrent_insert' is a GLOBAL variable and should be set with SET GLOBAL
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set @@global.sql_auto_is_null=1;
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ERROR HY000: Variable 'sql_auto_is_null' is a LOCAL variable and can't be used with SET GLOBAL
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select @@global.sql_auto_is_null;
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ERROR HY000: Variable 'sql_auto_is_null' is a LOCAL variable and can't be used with SET GLOBAL
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set myisam_max_sort_file_size=100;
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ERROR HY000: Variable 'myisam_max_sort_file_size' is a GLOBAL variable and should be set with SET GLOBAL
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set myisam_max_extra_sort_file_size=100;
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ERROR HY000: Variable 'myisam_max_extra_sort_file_size' is a GLOBAL variable and should be set with SET GLOBAL
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set autocommit=1;
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set big_tables=1;
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select @@autocommit, @@big_tables;
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@@autocommit @@big_tables
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1 1
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set global binlog_cache_size=100;
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set bulk_insert_buffer_size=100;
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set character set cp1251_koi8;
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set character set default;
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set @@global.concurrent_insert=1;
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set global connect_timeout=100;
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select @@delay_key_write;
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@@delay_key_write
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ON
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set global delay_key_write="OFF";
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select @@delay_key_write;
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@@delay_key_write
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OFF
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set global delay_key_write=ALL;
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select @@delay_key_write;
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@@delay_key_write
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ALL
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set global delay_key_write=1;
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select @@delay_key_write;
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@@delay_key_write
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ON
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set global delayed_insert_limit=100;
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set global delayed_insert_timeout=100;
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set global delayed_queue_size=100;
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set global flush=1;
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set global flush_time=100;
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set insert_id=1;
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set interactive_timeout=100;
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set join_buffer_size=100;
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set last_insert_id=1;
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set global local_infile=1;
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set long_query_time=100;
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set low_priority_updates=1;
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set max_allowed_packet=100;
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set global max_binlog_cache_size=100;
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set global max_binlog_size=100;
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set global max_connect_errors=100;
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set global max_connections=100;
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set global max_delayed_threads=100;
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set max_heap_table_size=100;
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set max_join_size=100;
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set max_sort_length=100;
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set max_tmp_tables=100;
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set global max_user_connections=100;
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select @@max_user_connections;
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@@max_user_connections
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100
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set global max_write_lock_count=100;
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set global myisam_max_extra_sort_file_size=100;
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select @@myisam_max_extra_sort_file_size;
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@@myisam_max_extra_sort_file_size
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100
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set global myisam_max_sort_file_size=100;
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set myisam_sort_buffer_size=100;
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set net_buffer_length=100;
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set net_read_timeout=100;
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set net_write_timeout=100;
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set global query_cache_limit=100;
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set global query_cache_size=100;
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set global query_cache_type=demand;
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set read_buffer_size=100;
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set read_rnd_buffer_size=100;
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set global rpl_recovery_rank=100;
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set global server_id=100;
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set global slave_net_timeout=100;
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set global slow_launch_time=100;
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set sort_buffer_size=100;
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set sql_auto_is_null=1;
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select @@sql_auto_is_null;
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@@sql_auto_is_null
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1
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set @@sql_auto_is_null=0;
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select @@sql_auto_is_null;
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@@sql_auto_is_null
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0
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set sql_big_selects=1;
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set sql_big_tables=1;
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set sql_buffer_result=1;
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set sql_log_bin=1;
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set sql_log_off=1;
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set sql_log_update=1;
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set sql_low_priority_updates=1;
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set sql_max_join_size=200;
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select @@sql_max_join_size,@@max_join_size;
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@@sql_max_join_size @@max_join_size
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200 200
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set sql_quote_show_create=1;
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set sql_safe_updates=1;
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set sql_select_limit=1;
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set global sql_slave_skip_counter=100;
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set sql_warnings=1;
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set global table_cache=100;
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set table_type=myisam;
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set global thread_cache_size=100;
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set timestamp=1, timestamp=default;
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set tmp_table_size=100;
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set tx_isolation="READ-COMMITTED";
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set wait_timeout=100;
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set log_warnings=1;
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create table t1 (a int not null auto_increment, primary key(a));
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create table t2 (a int not null auto_increment, primary key(a));
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insert into t1 values(null),(null),(null);
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insert into t2 values(null),(null),(null);
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set global key_buffer_size=100000;
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select @@key_buffer_size;
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@@key_buffer_size
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98304
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select * from t1 where a=2;
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a
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2
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select * from t2 where a=3;
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a
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3
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check table t1,t2;
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Table Op Msg_type Msg_text
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test.t1 check status OK
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test.t2 check status OK
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select max(a) +1, max(a) +2 into @xx,@yy from t1;
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drop table t1,t2;
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select @@xxxxxxxxxx;
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ERROR HY000: Unknown system variable 'xxxxxxxxxx'
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select 1;
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1
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1
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