mirror of
https://github.com/MariaDB/server.git
synced 2025-07-24 19:42:23 +03:00
e72124c4cc
New multi-key-cache handling. This was needed becasue the old one didn't work reliable with MERGE tables.
ALTER TABLE table_name ... CHARACTER SET ... now changes all char/varchar/text columns to the given character set
(One must use ALTER TABLE ... DEFAULT CHARACTER SET ... to change the default character set)
Fixed that have_compress is detected properly (fixes problems with func_compress.test on platforms without zlib)
New syntax for CACHE INDEX ('keys' is optional if no index name is given and one mentions the key cache name only ones)
Removed compiler warnings
Added mysql_set_server_option() to allow clients like PHP to easaily set/reset the multi-statement flag.
BUILD/compile-pentium-valgrind-max:
Add test of isam
client/mysql.cc:
CLIENT_MULTI_QUERIES -> CLIENT_MULTI_STATEMENTS
include/my_base.h:
Remove HA_EXTRA_SET_KEY_CACHE
include/my_no_pthread.h:
Add defines to ignore rw-locks when running without threads
include/my_sys.h:
Added function for multi-key-caches
include/myisam.h:
Added function to handle multi-key-caches
include/mysql.h:
Added mysql_set_server_option
include/mysql_com.h:
CLIENT_MULTI_QUERIES -> CLIENT_MULTI_STATEMENTS
Added enum_mysql_set_option
include/mysqld_error.h:
Added error message for unknown key cache
innobase/srv/srv0start.c:
Removed warning that is confused for MySQL users
libmysql/libmysql.c:
Added mysql_set_server_option()
libmysql/libmysql.def:
Added mysql_set_server_option()
myisam/ft_nlq_search.c:
Removed compiler warning
myisam/ft_static.c:
Removed compiler warning and fixed wrong return value
myisam/mi_check.c:
Clean up multi-key-cache usage
myisam/mi_checksum.c:
Removed not used variable
myisam/mi_close.c:
keycache -> key_cache
myisam/mi_delete_all.c:
keycache -> key_cache
myisam/mi_extra.c:
keycache -> key_cache
Removed HA_EXTRA_SET_KEY_CACHE
myisam/mi_keycache.c:
Changed logic so that it's MyISAM that is responsible for assign tables to different key caches instead of the upper level
myisam/mi_locking.c:
Don't change key cache on unlock (must be done before)
myisam/mi_open.c:
Fetch key cache to use from multi_key_cache_search()
myisam/mi_page.c:
keycache -> key_cache
myisam/mi_panic.c:
keycache -> key_cache
myisam/mi_preload.c:
keycache -> key_cache
myisam/mi_test1.c:
Use KEY_CACHE_BLOCK_SIZE
myisam/mi_test2.c:
Always test resize_key_cache()
myisam/mi_test3.c:
Use KEY_CACHE_BLOCK_SIZE instead of 512
myisam/myisamchk.c:
update for multiple key caches
myisam/myisamdef.h:
Remove reg_keycache
Add unique_name_length for storing length of unique_file_name
myisam/myisamlog.c:
Change how end_key_cache() is called
mysql-test/mysql-test-run.sh:
Fixed web link
Added name of failed test to abort row.
mysql-test/r/alter_table.result:
Testing of ALTER TABLE ... [DEFAULT] CHARACTER SET
mysql-test/r/case.result:
Update result for DEFAULT CHARSET...
mysql-test/r/cast.result:
Update result for DEFAULT CHARSET...
mysql-test/r/create.result:
Update result for DEFAULT CHARSET...
mysql-test/r/ctype_collate.result:
Update result for DEFAULT CHARSET...
mysql-test/r/ctype_latin1_de.result:
Update result for DEFAULT CHARSET...
mysql-test/r/ctype_many.result:
Update result for DEFAULT CHARSET...
mysql-test/r/ctype_mb.result:
Update result for DEFAULT CHARSET...
mysql-test/r/ctype_recoding.result:
Update result for DEFAULT CHARSET...
mysql-test/r/ctype_ucs.result:
Update result for DEFAULT CHARSET...
mysql-test/r/derived.result:
Use STRAIGHT_JOIN to make join order predictable
mysql-test/r/fulltext.result:
Update result for DEFAULT CHARSET...
mysql-test/r/func_str.result:
Update result for DEFAULT CHARSET...
mysql-test/r/func_system.result:
Update result for DEFAULT CHARSET...
mysql-test/r/gis-rtree.result:
Update result for DEFAULT CHARSET...
mysql-test/r/innodb.result:
Update result for DEFAULT CHARSET...
mysql-test/r/key_cache.result:
Update test for new key cache syntax.
Added more tests
mysql-test/r/merge.result:
Update result for DEFAULT CHARSET...
mysql-test/r/preload.result:
New syntax
mysql-test/r/show_check.result:
Update result for DEFAULT CHARSET...
mysql-test/r/sql_mode.result:
Update result for DEFAULT CHARSET...
mysql-test/r/subselect.result:
Update result for DEFAULT CHARSET...
mysql-test/r/type_blob.result:
Update result for DEFAULT CHARSET...
mysql-test/r/type_enum.result:
Update result for DEFAULT CHARSET...
mysql-test/r/type_nchar.result:
Update result for DEFAULT CHARSET...
mysql-test/r/type_set.result:
Update result for DEFAULT CHARSET...
mysql-test/r/union.result:
Use STRAIGHT_JOIN to make join order predictable
mysql-test/t/alter_table.test:
Testing of ALTER TABLE ... [DEFAULT] CHARACTER SET
mysql-test/t/ctype_many.test:
Update result for DEFAULT CHARSET...
mysql-test/t/derived.test:
Use STRAIGHT_JOIN to make join order predictable
mysql-test/t/isam.test:
Use disable warnings for test loop
mysql-test/t/join.test:
Update test now when we only support 61 tables in join
mysql-test/t/key_cache.test:
Update test for new key cache syntax.
Added more tests
mysql-test/t/preload.test:
Update for new syntax
mysql-test/t/union.test:
Use STRAIGHT_JOIN to make join order predictable
mysys/Makefile.am:
Added mf_keycaches.c
mysys/hash.c:
TRUE -> 1
mysys/mf_keycache.c:
Removed compiler warnings
Striped end space
Fixed indentation and improved function comments
TRUE -> 1
Changed parameters to end_key_cache() to make it easer to use
Fixed bug when using key blocks size > 1024 bytes (First part of index file could be overwritten with wrong data)
Split function flush_key_blocks into two functions to not get mutex used twice when called from flush_all_key_blocks()
mysys/my_bitmap.c:
More debugging
Safe bitmap_free()
Fixed indentation
mysys/my_getopt.c:
Ensure that we initialize option->value, option->max_value and value from GET_ASK_ADDR
mysys/my_thr_init.c:
Remove not used mutex THR_LOCK_keycache
mysys/typelib.c:
Fixed function comments
sql-common/client.c:
CLIENT_MULTI_QUERIES -> CLIENT_MULTI_STATEMENTS
Fixed the multi_result flag is set also on SELECT;s
sql/ha_myisam.cc:
Fixed multiple key_cache handling
(Now done on MyISAM level)
sql/ha_myisammrg.cc:
Fixed multiple key_cache handling
(Now done on MyISAM level)
sql/handler.cc:
New multi key cache handling
sql/handler.h:
New multi key cache handling
Added support for default character set
sql/item.h:
Added function cleanup() (Needed for prepared statements / cursors)
sql/item_cmpfunc.h:
Added cleanup function
sql/item_func.cc:
Indentation cleanup
sql/mysql_priv.h:
New multi-key-cache functions
Removed LOCK_assign
sql/mysqld.cc:
New multi-key-cache handling
Fixed that variable have_compress is set correctly
sql/protocol.cc:
SELECT didn't work reliable in multi-statements
sql/set_var.cc:
Support for new key cache variables
sql/set_var.h:
Support for new key cache variables
sql/share/czech/errmsg.txt:
New error messages
sql/share/danish/errmsg.txt:
New error messages
sql/share/dutch/errmsg.txt:
New error messages
sql/share/english/errmsg.txt:
New error messages
sql/share/estonian/errmsg.txt:
New error messages
sql/share/french/errmsg.txt:
New error messages
sql/share/german/errmsg.txt:
New error messages
sql/share/greek/errmsg.txt:
New error messages
sql/share/hungarian/errmsg.txt:
New error messages
sql/share/italian/errmsg.txt:
New error messages
sql/share/japanese/errmsg.txt:
New error messages
sql/share/korean/errmsg.txt:
New error messages
sql/share/norwegian-ny/errmsg.txt:
New error messages
sql/share/norwegian/errmsg.txt:
New error messages
sql/share/polish/errmsg.txt:
New error messages
sql/share/portuguese/errmsg.txt:
New error messages
sql/share/romanian/errmsg.txt:
New error messages
sql/share/russian/errmsg.txt:
New error messages
sql/share/serbian/errmsg.txt:
New error messages
sql/share/slovak/errmsg.txt:
New error messages
sql/share/spanish/errmsg.txt:
New error messages
sql/share/swedish/errmsg.txt:
New error messages
sql/share/ukrainian/errmsg.txt:
New error messages
sql/sql_base.cc:
Removed all key_cache handling (this is now done on MyISAM level)
Change table_charset -> default_table_charset
sql/sql_db.cc:
table_charset -> default_table_charset
sql/sql_delete.cc:
table_charset -> default_table_charset
sql/sql_lex.cc:
CLIENT_MULTI_QUERIES -> CLIENT_MULTI_STATEMENTS
sql/sql_lex.h:
New option to store a name and length
sql/sql_parse.cc:
Support for mysql_set_server_option()
Reset "default" keycache status variables in 'FLUSH STATUS' (Need to be improved later)
sql/sql_show.cc:
Add DEFAULT before CHARSET (for table character sets)
Fetch key cache variables from 'sql_key_cache'
sql/sql_table.cc:
table_charset -> default_table_charset
New multi-key-cache handling
sql/sql_test.cc:
Write information from all key caches
sql/sql_yacc.yy:
Changed syntax for CACHE INDEX ...
Force user to use DEFAULT before database/table level character sets
sql/structs.h:
Added SHOW_KEY_CACHE_LONG (to get values from sql_key_cache)
sql/table.cc:
table_charset -> default_table_charset
sql/table.h:
New key cache handling (this is now done in mysys/mf_keycaches.c)
sql/unireg.h:
A
415 lines
15 KiB
Plaintext
415 lines
15 KiB
Plaintext
drop table if exists t1,t2;
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create table t1 (
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col1 int not null auto_increment primary key,
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col2 varchar(30) not null,
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col3 varchar (20) not null,
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col4 varchar(4) not null,
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col5 enum('PENDING', 'ACTIVE', 'DISABLED') not null,
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col6 int not null, to_be_deleted int);
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insert into t1 values (2,4,3,5,"PENDING",1,7);
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alter table t1
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add column col4_5 varchar(20) not null after col4,
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add column col7 varchar(30) not null after col5,
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add column col8 datetime not null, drop column to_be_deleted,
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change column col2 fourth varchar(30) not null after col3,
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modify column col6 int not null first;
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select * from t1;
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col6 col1 col3 fourth col4 col4_5 col5 col7 col8
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1 2 3 4 5 PENDING 0000-00-00 00:00:00
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drop table t1;
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create table t1 (bandID MEDIUMINT UNSIGNED NOT NULL PRIMARY KEY, payoutID SMALLINT UNSIGNED NOT NULL);
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insert into t1 (bandID,payoutID) VALUES (1,6),(2,6),(3,4),(4,9),(5,10),(6,1),(7,12),(8,12);
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alter table t1 add column new_col int, order by payoutid,bandid;
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select * from t1;
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bandID payoutID new_col
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6 1 NULL
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3 4 NULL
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1 6 NULL
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2 6 NULL
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4 9 NULL
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5 10 NULL
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7 12 NULL
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8 12 NULL
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alter table t1 order by bandid,payoutid;
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select * from t1;
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bandID payoutID new_col
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1 6 NULL
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2 6 NULL
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3 4 NULL
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4 9 NULL
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5 10 NULL
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6 1 NULL
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7 12 NULL
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8 12 NULL
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drop table t1;
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CREATE TABLE t1 (
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GROUP_ID int(10) unsigned DEFAULT '0' NOT NULL,
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LANG_ID smallint(5) unsigned DEFAULT '0' NOT NULL,
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NAME varchar(80) DEFAULT '' NOT NULL,
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PRIMARY KEY (GROUP_ID,LANG_ID),
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KEY NAME (NAME));
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ALTER TABLE t1 CHANGE NAME NAME CHAR(80) not null;
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SHOW FULL COLUMNS FROM t1;
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Field Type Collation Null Key Default Extra Privileges Comment
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GROUP_ID int(10) unsigned NULL PRI 0 select,insert,update,references
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LANG_ID smallint(5) unsigned NULL PRI 0 select,insert,update,references
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NAME char(80) latin1_swedish_ci MUL select,insert,update,references
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DROP TABLE t1;
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create table t1 (n int);
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insert into t1 values(9),(3),(12),(10);
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alter table t1 order by n;
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select * from t1;
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n
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3
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9
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10
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12
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drop table t1;
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CREATE TABLE t1 (
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id int(11) unsigned NOT NULL default '0',
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category_id tinyint(4) unsigned NOT NULL default '0',
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type_id tinyint(4) unsigned NOT NULL default '0',
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body text NOT NULL,
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user_id int(11) unsigned NOT NULL default '0',
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status enum('new','old') NOT NULL default 'new',
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PRIMARY KEY (id)
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) TYPE=MyISAM;
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ALTER TABLE t1 ORDER BY t1.id, t1.status, t1.type_id, t1.user_id, t1.body;
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DROP TABLE t1;
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CREATE TABLE t1 (AnamneseId int(10) unsigned NOT NULL auto_increment,B BLOB,PRIMARY KEY (AnamneseId)) type=myisam;
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insert into t1 values (null,"hello");
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LOCK TABLES t1 WRITE;
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ALTER TABLE t1 ADD Column new_col int not null;
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UNLOCK TABLES;
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OPTIMIZE TABLE t1;
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Table Op Msg_type Msg_text
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test.t1 optimize status OK
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DROP TABLE t1;
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create table t1 (n1 int not null, n2 int, n3 int, n4 float,
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unique(n1),
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key (n1, n2, n3, n4),
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key (n2, n3, n4, n1),
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key (n3, n4, n1, n2),
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key (n4, n1, n2, n3) );
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alter table t1 disable keys;
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show keys from t1;
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Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
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t1 0 n1 1 n1 A 0 NULL NULL BTREE
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t1 1 n1_2 1 n1 A NULL NULL NULL BTREE disabled
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t1 1 n1_2 2 n2 A NULL NULL NULL YES BTREE disabled
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t1 1 n1_2 3 n3 A NULL NULL NULL YES BTREE disabled
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t1 1 n1_2 4 n4 A NULL NULL NULL YES BTREE disabled
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t1 1 n2 1 n2 A NULL NULL NULL YES BTREE disabled
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t1 1 n2 2 n3 A NULL NULL NULL YES BTREE disabled
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t1 1 n2 3 n4 A NULL NULL NULL YES BTREE disabled
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t1 1 n2 4 n1 A NULL NULL NULL BTREE disabled
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t1 1 n3 1 n3 A NULL NULL NULL YES BTREE disabled
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t1 1 n3 2 n4 A NULL NULL NULL YES BTREE disabled
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t1 1 n3 3 n1 A NULL NULL NULL BTREE disabled
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t1 1 n3 4 n2 A NULL NULL NULL YES BTREE disabled
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t1 1 n4 1 n4 A NULL NULL NULL YES BTREE disabled
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t1 1 n4 2 n1 A NULL NULL NULL BTREE disabled
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t1 1 n4 3 n2 A NULL NULL NULL YES BTREE disabled
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t1 1 n4 4 n3 A NULL NULL NULL YES BTREE disabled
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insert into t1 values(10,RAND()*1000,RAND()*1000,RAND());
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insert into t1 values(9,RAND()*1000,RAND()*1000,RAND());
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insert into t1 values(8,RAND()*1000,RAND()*1000,RAND());
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insert into t1 values(7,RAND()*1000,RAND()*1000,RAND());
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insert into t1 values(6,RAND()*1000,RAND()*1000,RAND());
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insert into t1 values(5,RAND()*1000,RAND()*1000,RAND());
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insert into t1 values(4,RAND()*1000,RAND()*1000,RAND());
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insert into t1 values(3,RAND()*1000,RAND()*1000,RAND());
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insert into t1 values(2,RAND()*1000,RAND()*1000,RAND());
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insert into t1 values(1,RAND()*1000,RAND()*1000,RAND());
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alter table t1 enable keys;
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show keys from t1;
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Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
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t1 0 n1 1 n1 A 10 NULL NULL BTREE
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t1 1 n1_2 1 n1 A 10 NULL NULL BTREE
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t1 1 n1_2 2 n2 A 10 NULL NULL YES BTREE
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t1 1 n1_2 3 n3 A 10 NULL NULL YES BTREE
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t1 1 n1_2 4 n4 A 10 NULL NULL YES BTREE
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t1 1 n2 1 n2 A 10 NULL NULL YES BTREE
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t1 1 n2 2 n3 A 10 NULL NULL YES BTREE
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t1 1 n2 3 n4 A 10 NULL NULL YES BTREE
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t1 1 n2 4 n1 A 10 NULL NULL BTREE
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t1 1 n3 1 n3 A 10 NULL NULL YES BTREE
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t1 1 n3 2 n4 A 10 NULL NULL YES BTREE
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t1 1 n3 3 n1 A 10 NULL NULL BTREE
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t1 1 n3 4 n2 A 10 NULL NULL YES BTREE
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t1 1 n4 1 n4 A 10 NULL NULL YES BTREE
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t1 1 n4 2 n1 A 10 NULL NULL BTREE
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t1 1 n4 3 n2 A 10 NULL NULL YES BTREE
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t1 1 n4 4 n3 A 10 NULL NULL YES BTREE
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drop table t1;
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create table t1 (i int unsigned not null auto_increment primary key);
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insert into t1 values (null),(null),(null),(null);
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alter table t1 drop i,add i int unsigned not null auto_increment, drop primary key, add primary key (i);
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select * from t1;
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i
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1
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2
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3
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4
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drop table t1;
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create table t1 (i int unsigned not null auto_increment primary key);
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alter table t1 rename t2;
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alter table t2 rename t1, add c char(10) comment "no comment";
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show columns from t1;
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Field Type Null Key Default Extra
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i int(10) unsigned PRI NULL auto_increment
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c char(10) YES NULL
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drop table t1;
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create table t1 (a int, b int);
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insert into t1 values(1,100), (2,100), (3, 100);
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insert into t1 values(1,99), (2,99), (3, 99);
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insert into t1 values(1,98), (2,98), (3, 98);
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insert into t1 values(1,97), (2,97), (3, 97);
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insert into t1 values(1,96), (2,96), (3, 96);
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insert into t1 values(1,95), (2,95), (3, 95);
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insert into t1 values(1,94), (2,94), (3, 94);
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insert into t1 values(1,93), (2,93), (3, 93);
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insert into t1 values(1,92), (2,92), (3, 92);
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insert into t1 values(1,91), (2,91), (3, 91);
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insert into t1 values(1,90), (2,90), (3, 90);
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insert into t1 values(1,89), (2,89), (3, 89);
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insert into t1 values(1,88), (2,88), (3, 88);
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insert into t1 values(1,87), (2,87), (3, 87);
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insert into t1 values(1,86), (2,86), (3, 86);
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insert into t1 values(1,85), (2,85), (3, 85);
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insert into t1 values(1,84), (2,84), (3, 84);
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insert into t1 values(1,83), (2,83), (3, 83);
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insert into t1 values(1,82), (2,82), (3, 82);
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insert into t1 values(1,81), (2,81), (3, 81);
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insert into t1 values(1,80), (2,80), (3, 80);
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insert into t1 values(1,79), (2,79), (3, 79);
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insert into t1 values(1,78), (2,78), (3, 78);
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insert into t1 values(1,77), (2,77), (3, 77);
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insert into t1 values(1,76), (2,76), (3, 76);
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insert into t1 values(1,75), (2,75), (3, 75);
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insert into t1 values(1,74), (2,74), (3, 74);
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insert into t1 values(1,73), (2,73), (3, 73);
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insert into t1 values(1,72), (2,72), (3, 72);
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insert into t1 values(1,71), (2,71), (3, 71);
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insert into t1 values(1,70), (2,70), (3, 70);
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insert into t1 values(1,69), (2,69), (3, 69);
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insert into t1 values(1,68), (2,68), (3, 68);
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insert into t1 values(1,67), (2,67), (3, 67);
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insert into t1 values(1,66), (2,66), (3, 66);
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insert into t1 values(1,65), (2,65), (3, 65);
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insert into t1 values(1,64), (2,64), (3, 64);
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insert into t1 values(1,63), (2,63), (3, 63);
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insert into t1 values(1,62), (2,62), (3, 62);
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insert into t1 values(1,61), (2,61), (3, 61);
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insert into t1 values(1,60), (2,60), (3, 60);
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insert into t1 values(1,59), (2,59), (3, 59);
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insert into t1 values(1,58), (2,58), (3, 58);
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insert into t1 values(1,57), (2,57), (3, 57);
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insert into t1 values(1,56), (2,56), (3, 56);
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insert into t1 values(1,55), (2,55), (3, 55);
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insert into t1 values(1,54), (2,54), (3, 54);
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insert into t1 values(1,53), (2,53), (3, 53);
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insert into t1 values(1,52), (2,52), (3, 52);
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insert into t1 values(1,51), (2,51), (3, 51);
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insert into t1 values(1,50), (2,50), (3, 50);
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insert into t1 values(1,49), (2,49), (3, 49);
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insert into t1 values(1,48), (2,48), (3, 48);
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insert into t1 values(1,47), (2,47), (3, 47);
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insert into t1 values(1,46), (2,46), (3, 46);
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insert into t1 values(1,45), (2,45), (3, 45);
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insert into t1 values(1,44), (2,44), (3, 44);
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||
insert into t1 values(1,43), (2,43), (3, 43);
|
||
insert into t1 values(1,42), (2,42), (3, 42);
|
||
insert into t1 values(1,41), (2,41), (3, 41);
|
||
insert into t1 values(1,40), (2,40), (3, 40);
|
||
insert into t1 values(1,39), (2,39), (3, 39);
|
||
insert into t1 values(1,38), (2,38), (3, 38);
|
||
insert into t1 values(1,37), (2,37), (3, 37);
|
||
insert into t1 values(1,36), (2,36), (3, 36);
|
||
insert into t1 values(1,35), (2,35), (3, 35);
|
||
insert into t1 values(1,34), (2,34), (3, 34);
|
||
insert into t1 values(1,33), (2,33), (3, 33);
|
||
insert into t1 values(1,32), (2,32), (3, 32);
|
||
insert into t1 values(1,31), (2,31), (3, 31);
|
||
insert into t1 values(1,30), (2,30), (3, 30);
|
||
insert into t1 values(1,29), (2,29), (3, 29);
|
||
insert into t1 values(1,28), (2,28), (3, 28);
|
||
insert into t1 values(1,27), (2,27), (3, 27);
|
||
insert into t1 values(1,26), (2,26), (3, 26);
|
||
insert into t1 values(1,25), (2,25), (3, 25);
|
||
insert into t1 values(1,24), (2,24), (3, 24);
|
||
insert into t1 values(1,23), (2,23), (3, 23);
|
||
insert into t1 values(1,22), (2,22), (3, 22);
|
||
insert into t1 values(1,21), (2,21), (3, 21);
|
||
insert into t1 values(1,20), (2,20), (3, 20);
|
||
insert into t1 values(1,19), (2,19), (3, 19);
|
||
insert into t1 values(1,18), (2,18), (3, 18);
|
||
insert into t1 values(1,17), (2,17), (3, 17);
|
||
insert into t1 values(1,16), (2,16), (3, 16);
|
||
insert into t1 values(1,15), (2,15), (3, 15);
|
||
insert into t1 values(1,14), (2,14), (3, 14);
|
||
insert into t1 values(1,13), (2,13), (3, 13);
|
||
insert into t1 values(1,12), (2,12), (3, 12);
|
||
insert into t1 values(1,11), (2,11), (3, 11);
|
||
insert into t1 values(1,10), (2,10), (3, 10);
|
||
insert into t1 values(1,9), (2,9), (3, 9);
|
||
insert into t1 values(1,8), (2,8), (3, 8);
|
||
insert into t1 values(1,7), (2,7), (3, 7);
|
||
insert into t1 values(1,6), (2,6), (3, 6);
|
||
insert into t1 values(1,5), (2,5), (3, 5);
|
||
insert into t1 values(1,4), (2,4), (3, 4);
|
||
insert into t1 values(1,3), (2,3), (3, 3);
|
||
insert into t1 values(1,2), (2,2), (3, 2);
|
||
insert into t1 values(1,1), (2,1), (3, 1);
|
||
alter table t1 add unique (a,b), add key (b);
|
||
show keys from t1;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
t1 0 a 1 a A NULL NULL NULL YES BTREE
|
||
t1 0 a 2 b A NULL NULL NULL YES BTREE
|
||
t1 1 b 1 b A 100 NULL NULL YES BTREE
|
||
analyze table t1;
|
||
Table Op Msg_type Msg_text
|
||
test.t1 analyze status OK
|
||
show keys from t1;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
t1 0 a 1 a A 3 NULL NULL YES BTREE
|
||
t1 0 a 2 b A 300 NULL NULL YES BTREE
|
||
t1 1 b 1 b A 100 NULL NULL YES BTREE
|
||
drop table t1;
|
||
CREATE TABLE t1 (i int(10), index(i) );
|
||
ALTER TABLE t1 DISABLE KEYS;
|
||
INSERT DELAYED INTO t1 VALUES(1),(2),(3);
|
||
ALTER TABLE t1 ENABLE KEYS;
|
||
drop table t1;
|
||
set names koi8r;
|
||
create table t1 (a char(10) character set koi8r);
|
||
insert into t1 values ('<27><><EFBFBD><EFBFBD>');
|
||
select a,hex(a) from t1;
|
||
a hex(a)
|
||
<EFBFBD><EFBFBD><EFBFBD><EFBFBD> D4C5D3D4
|
||
alter table t1 change a a char(10) character set cp1251;
|
||
select a,hex(a) from t1;
|
||
a hex(a)
|
||
<EFBFBD><EFBFBD><EFBFBD><EFBFBD> F2E5F1F2
|
||
alter table t1 change a a char(10) binary;
|
||
select a,hex(a) from t1;
|
||
a hex(a)
|
||
<EFBFBD><EFBFBD><EFBFBD><EFBFBD> F2E5F1F2
|
||
alter table t1 change a a char(10) character set cp1251;
|
||
select a,hex(a) from t1;
|
||
a hex(a)
|
||
<EFBFBD><EFBFBD><EFBFBD><EFBFBD> F2E5F1F2
|
||
alter table t1 change a a char(10) character set koi8r;
|
||
select a,hex(a) from t1;
|
||
a hex(a)
|
||
<EFBFBD><EFBFBD><EFBFBD><EFBFBD> D4C5D3D4
|
||
alter table t1 change a a varchar(10) character set cp1251;
|
||
select a,hex(a) from t1;
|
||
a hex(a)
|
||
<EFBFBD><EFBFBD><EFBFBD><EFBFBD> F2E5F1F2
|
||
alter table t1 change a a char(10) character set koi8r;
|
||
select a,hex(a) from t1;
|
||
a hex(a)
|
||
<EFBFBD><EFBFBD><EFBFBD><EFBFBD> D4C5D3D4
|
||
alter table t1 change a a text character set cp1251;
|
||
select a,hex(a) from t1;
|
||
a hex(a)
|
||
<EFBFBD><EFBFBD><EFBFBD><EFBFBD> F2E5F1F2
|
||
alter table t1 change a a char(10) character set koi8r;
|
||
select a,hex(a) from t1;
|
||
a hex(a)
|
||
<EFBFBD><EFBFBD><EFBFBD><EFBFBD> D4C5D3D4
|
||
show create table t1;
|
||
Table Create Table
|
||
t1 CREATE TABLE `t1` (
|
||
`a` char(10) character set koi8r default NULL
|
||
) TYPE=MyISAM DEFAULT CHARSET=latin1
|
||
alter table t1 DEFAULT CHARACTER SET latin1;
|
||
show create table t1;
|
||
Table Create Table
|
||
t1 CREATE TABLE `t1` (
|
||
`a` char(10) character set koi8r default NULL
|
||
) TYPE=MyISAM DEFAULT CHARSET=latin1
|
||
alter table t1 CHARACTER SET latin1;
|
||
show create table t1;
|
||
Table Create Table
|
||
t1 CREATE TABLE `t1` (
|
||
`a` char(10) default NULL
|
||
) TYPE=MyISAM DEFAULT CHARSET=latin1
|
||
alter table t1 DEFAULT CHARACTER SET cp1251;
|
||
show create table t1;
|
||
Table Create Table
|
||
t1 CREATE TABLE `t1` (
|
||
`a` char(10) character set latin1 default NULL
|
||
) TYPE=MyISAM DEFAULT CHARSET=cp1251
|
||
drop table t1;
|
||
CREATE TABLE t1 (
|
||
Host varchar(16) binary NOT NULL default '',
|
||
User varchar(16) binary NOT NULL default '',
|
||
PRIMARY KEY (Host,User)
|
||
) TYPE=MyISAM;
|
||
ALTER TABLE t1 DISABLE KEYS;
|
||
LOCK TABLES t1 WRITE;
|
||
INSERT INTO t1 VALUES ('localhost','root'),('localhost',''),('games','monty');
|
||
SHOW INDEX FROM t1;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
t1 0 PRIMARY 1 Host A NULL NULL NULL BTREE
|
||
t1 0 PRIMARY 2 User A 3 NULL NULL BTREE
|
||
ALTER TABLE t1 ENABLE KEYS;
|
||
UNLOCK TABLES;
|
||
CHECK TABLES t1;
|
||
Table Op Msg_type Msg_text
|
||
test.t1 check status OK
|
||
DROP TABLE t1;
|
||
CREATE TABLE t1 (
|
||
Host varchar(16) binary NOT NULL default '',
|
||
User varchar(16) binary NOT NULL default '',
|
||
PRIMARY KEY (Host,User),
|
||
KEY (Host)
|
||
) TYPE=MyISAM;
|
||
ALTER TABLE t1 DISABLE KEYS;
|
||
SHOW INDEX FROM t1;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
t1 0 PRIMARY 1 Host A NULL NULL NULL BTREE
|
||
t1 0 PRIMARY 2 User A 0 NULL NULL BTREE
|
||
t1 1 Host 1 Host A NULL NULL NULL BTREE disabled
|
||
LOCK TABLES t1 WRITE;
|
||
INSERT INTO t1 VALUES ('localhost','root'),('localhost','');
|
||
SHOW INDEX FROM t1;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
t1 0 PRIMARY 1 Host A NULL NULL NULL BTREE
|
||
t1 0 PRIMARY 2 User A 2 NULL NULL BTREE
|
||
t1 1 Host 1 Host A NULL NULL NULL BTREE disabled
|
||
ALTER TABLE t1 ENABLE KEYS;
|
||
SHOW INDEX FROM t1;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
t1 0 PRIMARY 1 Host A NULL NULL NULL BTREE
|
||
t1 0 PRIMARY 2 User A 2 NULL NULL BTREE
|
||
t1 1 Host 1 Host A 1 NULL NULL BTREE
|
||
UNLOCK TABLES;
|
||
CHECK TABLES t1;
|
||
Table Op Msg_type Msg_text
|
||
test.t1 check status OK
|
||
LOCK TABLES t1 WRITE;
|
||
ALTER TABLE t1 RENAME t2;
|
||
UNLOCK TABLES;
|
||
select * from t2;
|
||
Host User
|
||
localhost
|
||
localhost root
|
||
DROP TABLE t2;
|
||
CREATE TABLE t1 (
|
||
Host varchar(16) binary NOT NULL default '',
|
||
User varchar(16) binary NOT NULL default '',
|
||
PRIMARY KEY (Host,User),
|
||
KEY (Host)
|
||
) TYPE=MyISAM;
|
||
LOCK TABLES t1 WRITE;
|
||
ALTER TABLE t1 DISABLE KEYS;
|
||
SHOW INDEX FROM t1;
|
||
Table Non_unique Key_name Seq_in_index Column_name Collation Cardinality Sub_part Packed Null Index_type Comment
|
||
t1 0 PRIMARY 1 Host A NULL NULL NULL BTREE
|
||
t1 0 PRIMARY 2 User A 0 NULL NULL BTREE
|
||
t1 1 Host 1 Host A NULL NULL NULL BTREE disabled
|
||
DROP TABLE t1;
|