mirror of
https://github.com/MariaDB/server.git
synced 2025-01-16 03:52:35 +01:00
Added --skip-safemalloc to mysqltest
Added bug fix from 3.23 for AIX 4.3.3 and gcc 3.x Small change in EXCHANGE output Propagate open-files-limit from mysqld_safe -> mysqld Fixed speed bug in GROUP BY Added quotes around database name in CREATE DATABASE db_name (for binary log) BitKeeper/etc/ignore: added stamp-h1 Docs/manual.texi: Added 4.1 manual section Updated changelog client/mysqltest.c: Added --skip-safemalloc include/my_global.h: Added bug fix from 3.23 for AIX 4.3.3 and gcc 3.x mysql-test/mysql-test-run.sh: Start mysqltest with --skip-safemalloc (To get it faster) mysql-test/r/bdb.result: Update for new EXPLAIN output mysql-test/r/compare.result: Update for new EXPLAIN output mysql-test/r/create.result: Update for new EXPLAIN output mysql-test/r/distinct.result: Update for new EXPLAIN output mysql-test/r/explain.result: Update for new EXPLAIN output mysql-test/r/group_by.result: Update for new EXPLAIN output mysql-test/r/heap.result: Update for new EXPLAIN output mysql-test/r/innodb.result: Update for new EXPLAIN output mysql-test/r/join_outer.result: Update for new EXPLAIN output mysql-test/r/key_diff.result: Update for new EXPLAIN output mysql-test/r/merge.result: Update for new EXPLAIN output mysql-test/r/null_key.result: Update for new EXPLAIN output mysql-test/r/order_by.result: Update for new EXPLAIN output mysql-test/r/select.result: Update for new EXPLAIN output mysql-test/r/temp_table.result: Fixed speed bug in GROUP BY mysql-test/r/type_datetime.result: Update for new EXPLAIN output mysql-test/r/user_var.result: Update for new EXPLAIN output mysql-test/r/variables.result: Removed variable safe_show_database mysql-test/t/temp_table.test: Fixed speed bug in GROUP BY mysql-test/t/variables.test: Removed not used variable safe_show_databases scripts/mysqld_safe.sh: Propagate open-files-limit from mysqld_safe -> mysqld sql/mysqld.cc: Removed variable safe_show_database sql/set_var.cc: Removed variable safe_show_database sql/slave.cc: Updated error message sql/sql_db.cc: Added quotes around database name in CREATE DATABASE db_name sql/sql_select.cc: Fixed speed bug in GROUP BY
This commit is contained in:
unknown
parent
3f86502e34
commit
31ba88c0c1
31 changed files with 284 additions and 164 deletions
|
|
@ -494,3 +494,5 @@ vio/test-ssl
|
|||
vio/test-sslclient
|
||||
vio/test-sslserver
|
||||
vio/viotest-ssl
|
||||
innobase/stamp-h1
|
||||
stamp-h1
|
||||
|
|
|
|||
117
Docs/manual.texi
117
Docs/manual.texi
|
|
@ -8202,6 +8202,10 @@ The following startup variables/options have been renamed:
|
|||
The startup options @code{record_buffer}, @code{sort_buffer} and
|
||||
@code{warnings} will still work in MySQL 4.0 but are deprecated.
|
||||
@item
|
||||
The mysqld option @code{--safe_show_database} doesn't work anymore. One
|
||||
should instead give the @code{SHOW DATABASES} privileges to everyone that
|
||||
need to see all databases.
|
||||
@item
|
||||
The following SQL variables have changed name.
|
||||
@c arjen note: New table, not yet measured for O'Reilly/DocBook.
|
||||
@multitable @columnfractions .50 .50
|
||||
|
|
@ -19879,7 +19883,6 @@ differ somewhat:
|
|||
| query_cache_limit | 1048576 |
|
||||
| query_cache_size | 0 |
|
||||
| query_cache_type | ON |
|
||||
| safe_show_database | OFF |
|
||||
| server_id | 0 |
|
||||
| slave_net_timeout | 3600 |
|
||||
| skip_external_locking | ON |
|
||||
|
|
@ -20314,7 +20317,8 @@ This may be set (only numeric) to
|
|||
Don't show databases for which the user doesn't have any database or
|
||||
table privileges. This can improve security if you're concerned about
|
||||
people being able to see what databases other users have. See also
|
||||
@code{skip_show_database}.
|
||||
@code{skip_show_database}. This option is deprecated as one should instead
|
||||
use the @code{SHOW DATABASES} privilege instead.
|
||||
|
||||
@item @code{server_id}
|
||||
The value of the @code{--server-id} option.
|
||||
|
|
@ -20327,7 +20331,7 @@ Is ON if we only allow local (socket) connections.
|
|||
|
||||
@item @code{skip_show_database}
|
||||
This prevents people from doing @code{SHOW DATABASES} if they don't have
|
||||
the @code{PROCESS} privilege. This can improve security if you're
|
||||
the @code{SHOW DATABASE} privilege. This can improve security if you're
|
||||
concerned about people being able to see what databases other users
|
||||
have. See also @code{safe_show_database}.
|
||||
|
||||
|
|
@ -23683,7 +23687,7 @@ started}, your slaves may fail.
|
|||
|
||||
Please see the following table for an indication of master-slave
|
||||
compatibility between different versions. With regard to version 4.0,
|
||||
we recommend using same version on both sides.
|
||||
we recommend using at least 4.0.4 on both sides.
|
||||
|
||||
@c FIX arjen 2002-07-17 new table, not yet measured for XML/DocBook.
|
||||
@multitable @columnfractions .10 .15 .15 .10 .10 .10
|
||||
|
|
@ -24350,7 +24354,7 @@ may be used with @code{IO_THREAD} and @code{SQL_THREAD} options. (Slave)
|
|||
@tab Re-enables update logging if the user has the @code{SUPER} privilege.
|
||||
Ignored otherwise. (Master)
|
||||
|
||||
@item @code{GLOBAL SET SQL_SLAVE_SKIP_COUNTER=n}
|
||||
@item @code{SET GLOBAL SQL_SLAVE_SKIP_COUNTER=n}
|
||||
@tab Skip the next @code{n} events from the master. Only valid when
|
||||
the slave thread is not running, otherwise, gives an error. Useful for
|
||||
recovering from replication glitches.
|
||||
|
|
@ -25510,7 +25514,7 @@ temporary table to hold the result. This typically happens if you do an
|
|||
@code{ORDER BY} on a different column set than you did a @code{GROUP
|
||||
BY} on.
|
||||
|
||||
@item Where used
|
||||
@item Using where (was @code{where used})
|
||||
A @code{WHERE} clause will be used to restrict which rows will be
|
||||
matched against the next table or sent to the client. If you don't have
|
||||
this information and the table is of type @code{ALL} or @code{index},
|
||||
|
|
@ -25670,7 +25674,7 @@ Executing the @code{EXPLAIN} statement again produces this result:
|
|||
|
||||
@example
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
tt ALL AssignedPC,ClientID,ActualPC NULL NULL NULL 3872 where used
|
||||
tt ALL AssignedPC,ClientID,ActualPC NULL NULL NULL 3872 Using where
|
||||
do ALL PRIMARY NULL NULL NULL 2135
|
||||
range checked for each record (key map: 1)
|
||||
et_1 ALL PRIMARY NULL NULL NULL 74
|
||||
|
|
@ -25696,7 +25700,7 @@ Now @code{EXPLAIN} produces the output shown here:
|
|||
@example
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
et ALL PRIMARY NULL NULL NULL 74
|
||||
tt ref AssignedPC, ActualPC 15 et.EMPLOYID 52 where used
|
||||
tt ref AssignedPC, ActualPC 15 et.EMPLOYID 52 Using where
|
||||
ClientID,
|
||||
ActualPC
|
||||
et_1 eq_ref PRIMARY PRIMARY 15 tt.AssignedPC 1
|
||||
|
|
@ -25719,7 +25723,7 @@ Now the join is perfect, and @code{EXPLAIN} produces this result:
|
|||
|
||||
@example
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
tt ALL AssignedPC NULL NULL NULL 3872 where used
|
||||
tt ALL AssignedPC NULL NULL NULL 3872 Using where
|
||||
ClientID,
|
||||
ActualPC
|
||||
et eq_ref PRIMARY PRIMARY 15 tt.ActualPC 1
|
||||
|
|
@ -28868,7 +28872,6 @@ and if you can use @code{GLOBAL} or @code{SESSION} with them.
|
|||
@item read_buffer_size @tab num @tab GLOBAL | SESSION
|
||||
@item read_rnd_buffer_size @tab num @tab GLOBAL | SESSION
|
||||
@item rpl_recovery_rank @tab num @tab GLOBAL
|
||||
@item safe_show_database @tab bool @tab GLOBAL
|
||||
@item server_id @tab num @tab GLOBAL
|
||||
@item slave_compressed_protocol @tab bool @tab GLOBAL
|
||||
@item slave_net_timeout @tab num @tab GLOBAL
|
||||
|
|
@ -38698,8 +38701,8 @@ SUM_OVER_ALL_KEYS(max_length_of_key + sizeof(char*) * 2)
|
|||
* Table and index:: Table and Index Structures
|
||||
* File space management:: File Space Management and Disk I/O
|
||||
* Error handling:: Error Handling
|
||||
* InnoDB change history:: InnoDB Change History
|
||||
* InnoDB restrictions:: Restrictions on InnoDB Tables
|
||||
* InnoDB change history:: InnoDB Change History
|
||||
* InnoDB contact information:: InnoDB Contact Information.
|
||||
@end menu
|
||||
|
||||
|
|
@ -50735,6 +50738,7 @@ this means that the version has not yet been released!
|
|||
@c Please don't add a new version here without also updating ../configure.in!
|
||||
|
||||
@menu
|
||||
* News-4.1.x::
|
||||
* News-4.0.x:: Changes in release 4.0.x (Beta)
|
||||
* News-3.23.x:: Changes in release 3.23.x (Stable)
|
||||
* News-3.22.x:: Changes in release 3.22.x (Older; Still supported)
|
||||
|
|
@ -50744,7 +50748,77 @@ this means that the version has not yet been released!
|
|||
@end menu
|
||||
|
||||
|
||||
@node News-4.0.x, News-3.23.x, News, News
|
||||
@node News-4.1.x, News-4.0.x, News, News
|
||||
@appendixsec Changes in release 4.1.x (Alpha)
|
||||
|
||||
@cindex changes, version 4.1
|
||||
|
||||
Version 4.1 of the MySQL server includes many enhancements and new features:
|
||||
|
||||
@itemize @bullet
|
||||
@item
|
||||
Sub selects: @code{SELECT * from t1 where t1.a=(SELECT t2.b FROM t2)}.
|
||||
@item
|
||||
Character sets to be defined per column, table and database.
|
||||
@item
|
||||
Unicode (UTF8) support.
|
||||
@item
|
||||
Derived tables: @code{SELECT a from t1, (select * from t2) WHERE t1.a=t2.a}
|
||||
@item
|
||||
@code{BTREE} index on @code{HEAP} tables.
|
||||
@item
|
||||
Support for GIS (Geometrical data).
|
||||
@item
|
||||
@code{SHOW WARNINGS}; Shows warnings for the last command.
|
||||
@end itemize
|
||||
|
||||
For a full list of changes, please refer to the changelog sections for
|
||||
each individual 4.1.x release.
|
||||
|
||||
@menu
|
||||
* News-4.1.0::
|
||||
@end menu
|
||||
|
||||
@node News-4.1.0, , News-4.1.x, News-4.1.x
|
||||
@appendixsubsec Changes in release 4.1.0
|
||||
@itemize
|
||||
@item
|
||||
One can specify many temporary directories to be used in a round-robin
|
||||
fasion with: @code{--tmpdir=dirname1:dirname2:dirname3}.
|
||||
@item
|
||||
Sub selects: @code{SELECT * from t1 where t1.a=(SELECT t2.b FROM t2)}.
|
||||
@item
|
||||
Character sets to be defined per column, table and database.
|
||||
@item
|
||||
Unicode (UTF8) support.
|
||||
@item
|
||||
Derived tables: @code{SELECT a from t1, (select * from t2) WHERE t1.a=t2.a}
|
||||
@item
|
||||
@code{BTREE} index on @code{HEAP} tables.
|
||||
@item
|
||||
Faster embedded server.
|
||||
@item
|
||||
One can add a comment per column in @code{CREATE TABLE}.
|
||||
@item
|
||||
@code{SHOW FULL COLUMNS FROM table_name} shows column comments.
|
||||
@item
|
||||
@code{ALTER DATABASE}.
|
||||
@item
|
||||
Support for GIS (Geometrical data).
|
||||
@item
|
||||
@code{SHOW WARNINGS}; Shows warnings from the last command.
|
||||
@item
|
||||
One can specify a column type for a colum in @code{CREATE TABLE
|
||||
... SELECT} by defining the column in the @code{CREATE} part
|
||||
|
||||
@example
|
||||
CREATE TABLE foo (a tinyint not null) SELECT b+1 AS 'a' FROM bar;
|
||||
@end example
|
||||
|
||||
@end itemize
|
||||
|
||||
|
||||
@node News-4.0.x, News-3.23.x, News-4.1.x, News
|
||||
@appendixsec Changes in release 4.0.x (Beta)
|
||||
|
||||
@cindex changes, version 4.0
|
||||
|
|
@ -50815,6 +50889,17 @@ each individual 4.0.x release.
|
|||
@appendixsubsec Changes in release 4.0.5
|
||||
@itemize
|
||||
@item
|
||||
When one uses the @code{--open-files-limit=#} option to @code{mysqld_safe}
|
||||
it's now passed on to @code{mysqld}
|
||||
@item
|
||||
Fixed that @code{GROUP BY} on columns that may have a @code{NULL} value
|
||||
doesn't always use disk based temporary tables.
|
||||
@item
|
||||
Changed output from @code{EXPLAIN} from @code{'where used'} to
|
||||
@code{'Using where'} to make it more in line with other output.
|
||||
@item
|
||||
Removed variable @code{safe_show_database} as it was not used anymore.
|
||||
@item
|
||||
Small code improvement in multi-table updates
|
||||
@item
|
||||
Fixed a newly introduced bug that caused @code{ORDER BY ... LIMIT #}
|
||||
|
|
@ -51680,6 +51765,9 @@ not yet 100% confident in this code.
|
|||
@appendixsubsec Changes in release 3.23.54
|
||||
@itemize
|
||||
@item
|
||||
Allow one to start multiple MySQL servers on windows (code backported
|
||||
from 4.0.2).
|
||||
@item
|
||||
Fixed reference to freed memory when doing complicated @code{GROUP BY
|
||||
... ORDER BY} queries. Symptom was that @code{mysqld} died in function
|
||||
@code{send_fields}.
|
||||
|
|
@ -52504,8 +52592,9 @@ long as @code{server-id} is set and valid @file{master.info} is present.
|
|||
Partial updates (terminated with kill) are now logged with a special error
|
||||
code to the binary log. Slave will refuse to execute them if the error code
|
||||
indicates the update was terminated abnormally, and will have to be recovered
|
||||
with @code{SET SQL_SLAVE_SKIP_COUNTER=1; SLAVE START} after a manual sanity
|
||||
check/correction of data integrity.
|
||||
with @code{SET SQL_SLAVE_SKIP_COUNTER=1; SLAVE START} after a manual
|
||||
sanity check/correction of data integrity. Update: In 4.0.3 and above
|
||||
you have to use @code{SET GLOBAL}.
|
||||
@item
|
||||
Fixed bug that erroneously logged a drop of internal temporary table
|
||||
on thread termination to the binary log -- this bug affected replication.
|
||||
|
|
|
|||
|
|
@ -91,7 +91,7 @@
|
|||
|
||||
|
||||
enum {OPT_MANAGER_USER=256,OPT_MANAGER_HOST,OPT_MANAGER_PASSWD,
|
||||
OPT_MANAGER_PORT,OPT_MANAGER_WAIT_TIMEOUT};
|
||||
OPT_MANAGER_PORT,OPT_MANAGER_WAIT_TIMEOUT, OPT_SKIP_SAFEMALLOC};
|
||||
|
||||
static int record = 0, opt_sleep=0;
|
||||
static char *db = 0, *pass=0;
|
||||
|
|
@ -1845,6 +1845,9 @@ static struct my_option my_long_options[] =
|
|||
0, 0, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
|
||||
{"silent", 's', "Suppress all normal output. Synonym for --quiet.",
|
||||
(gptr*) &silent, (gptr*) &silent, 0, GET_BOOL, NO_ARG, 0, 0, 0, 0, 0, 0},
|
||||
{"skip-safemalloc", OPT_SKIP_SAFEMALLOC,
|
||||
"Don't use the memory allocation checking", 0, 0, 0, GET_NO_ARG, NO_ARG,
|
||||
0, 0, 0, 0, 0, 0},
|
||||
{"sleep", 'T', "Sleep always this many seconds on sleep commands",
|
||||
(gptr*) &opt_sleep, (gptr*) &opt_sleep, 0, GET_INT, REQUIRED_ARG, 0, 0, 0,
|
||||
0, 0, 0},
|
||||
|
|
@ -1944,6 +1947,11 @@ get_one_option(int optid, const struct my_option *opt __attribute__((unused)),
|
|||
if (read_server_arguments(argument))
|
||||
die(NullS);
|
||||
break;
|
||||
case OPT_SKIP_SAFEMALLOC:
|
||||
#ifdef SAFEMALLOC
|
||||
sf_malloc_quick=1;
|
||||
#endif
|
||||
break;
|
||||
case 'V':
|
||||
print_version();
|
||||
exit(0);
|
||||
|
|
@ -2301,6 +2309,7 @@ static void var_from_env(const char* name, const char* def_val)
|
|||
static void init_var_hash()
|
||||
{
|
||||
VAR* v;
|
||||
DBUG_ENTER("init_var_hash");
|
||||
if (hash_init(&var_hash, 1024, 0, 0, get_var_key, var_free, MYF(0)))
|
||||
die("Variable hash initialization failed");
|
||||
var_from_env("MASTER_MYPORT", "9306");
|
||||
|
|
@ -2309,6 +2318,7 @@ static void init_var_hash()
|
|||
var_from_env("BIG_TEST", opt_big_test ? "1" : "0");
|
||||
v=var_init(0,"MAX_TABLES", 0, (sizeof(ulong) == 4) ? "31" : "63",0);
|
||||
hash_insert(&var_hash, (byte*)v);
|
||||
DBUG_VOID_RETURN;
|
||||
}
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -119,7 +119,16 @@
|
|||
#define _H_STRINGS
|
||||
#define _SYS_STREAM_H
|
||||
/* #define _AIX32_CURSES */ /* XXX: this breaks AIX 4.3.3 (others?). */
|
||||
#define ulonglong2double(A) my_ulonglong2double(A)
|
||||
#define my_off_t2double(A) my_ulonglong2double(A)
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
double my_ulonglong2double(unsigned long long A);
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
#endif /* _AIX */
|
||||
|
||||
#ifdef HAVE_BROKEN_SNPRINTF /* HPUX 10.20 don't have this defined */
|
||||
#undef HAVE_SNPRINTF
|
||||
|
|
|
|||
|
|
@ -369,6 +369,7 @@ fi
|
|||
[ -d $MYSQL_TEST_DIR/var ] || mkdir $MYSQL_TEST_DIR/var
|
||||
[ -d $MYSQL_TEST_DIR/var/tmp ] || mkdir $MYSQL_TEST_DIR/var/tmp
|
||||
[ -d $MYSQL_TEST_DIR/var/run ] || mkdir $MYSQL_TEST_DIR/var/run
|
||||
[ -d $MYSQL_TEST_DIR/var/log ] || mkdir $MYSQL_TEST_DIR/var/log
|
||||
|
||||
if test ${COLUMNS:-0} -lt 80 ; then COLUMNS=80 ; fi
|
||||
E=`$EXPR $COLUMNS - 8`
|
||||
|
|
@ -454,7 +455,7 @@ fi
|
|||
|
||||
|
||||
MYSQL_TEST_ARGS="--no-defaults --socket=$MASTER_MYSOCK --database=$DB \
|
||||
--user=$DBUSER --password=$DBPASSWD --silent -v \
|
||||
--user=$DBUSER --password=$DBPASSWD --silent -v --skip-safemalloc \
|
||||
--tmpdir=$MYSQL_TMP_DIR"
|
||||
MYSQL_TEST_BIN=$MYSQL_TEST
|
||||
MYSQL_TEST="$MYSQL_TEST $MYSQL_TEST_ARGS"
|
||||
|
|
|
|||
|
|
@ -140,13 +140,13 @@ id parent_id level
|
|||
1010 102 2
|
||||
explain select level from t1 where level=1;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ref level level 1 const 1 where used; Using index
|
||||
t1 ref level level 1 const 1 Using where; Using index
|
||||
explain select level,id from t1 where level=1;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ref level level 1 const 1 where used; Using index
|
||||
t1 ref level level 1 const 1 Using where; Using index
|
||||
explain select level,id,parent_id from t1 where level=1;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ref level level 1 const 1 where used
|
||||
t1 ref level level 1 const 1 Using where
|
||||
select level,id from t1 where level=1;
|
||||
level id
|
||||
1 1002
|
||||
|
|
@ -625,7 +625,7 @@ id parent_id level
|
|||
1016 102 2
|
||||
explain select level from t1 where level=1;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ref level level 1 const 1 where used; Using index
|
||||
t1 ref level level 1 const 1 Using where; Using index
|
||||
select level,id from t1 where level=1;
|
||||
level id
|
||||
1 1004
|
||||
|
|
|
|||
|
|
@ -3,7 +3,7 @@ CREATE TABLE t1 (id CHAR(12) not null, PRIMARY KEY (id));
|
|||
insert into t1 values ('000000000001'),('000000000002');
|
||||
explain select * from t1 where id=000000000001;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 index PRIMARY PRIMARY 12 NULL 2 where used; Using index
|
||||
t1 index PRIMARY PRIMARY 12 NULL 2 Using where; Using index
|
||||
select * from t1 where id=000000000001;
|
||||
id
|
||||
000000000001
|
||||
|
|
|
|||
|
|
@ -63,7 +63,7 @@ insert into t1 (b) values ("hello"),("my"),("world");
|
|||
create table t2 (key (b)) select * from t1;
|
||||
explain select * from t2 where b="world";
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t2 ref B B 21 const 1 where used
|
||||
t2 ref B B 21 const 1 Using where
|
||||
select * from t2 where b="world";
|
||||
a B
|
||||
3 world
|
||||
|
|
|
|||
|
|
@ -175,7 +175,7 @@ explain SELECT distinct t3.a FROM t3,t2,t1 WHERE t3.a=t1.b AND t1.a=t2.a;
|
|||
table type possible_keys key key_len ref rows Extra
|
||||
t3 index a a 5 NULL 6 Using index; Using temporary
|
||||
t2 index a a 4 NULL 5 Using index; Distinct
|
||||
t1 eq_ref PRIMARY PRIMARY 4 t2.a 1 where used; Distinct
|
||||
t1 eq_ref PRIMARY PRIMARY 4 t2.a 1 Using where; Distinct
|
||||
SELECT distinct t3.a FROM t3,t2,t1 WHERE t3.a=t1.b AND t1.a=t2.a;
|
||||
a
|
||||
1
|
||||
|
|
@ -190,7 +190,7 @@ insert into t3 select * from t4;
|
|||
explain select distinct t1.a from t1,t3 where t1.a=t3.a;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 index PRIMARY PRIMARY 4 NULL 2 Using index; Using temporary
|
||||
t3 ref a a 5 t1.a 10 where used; Using index; Distinct
|
||||
t3 ref a a 5 t1.a 10 Using where; Using index; Distinct
|
||||
select distinct t1.a from t1,t3 where t1.a=t3.a;
|
||||
a
|
||||
1
|
||||
|
|
@ -278,10 +278,10 @@ table type possible_keys key key_len ref rows Extra
|
|||
t1 index id id 4 NULL 2 Using index; Using temporary
|
||||
t2 index id id 8 NULL 1 Using index; Distinct
|
||||
t3 index id id 8 NULL 1 Using index; Distinct
|
||||
j_lj_t2 index id id 4 NULL 2 where used; Using index; Distinct
|
||||
t2_lj index id id 8 NULL 1 where used; Using index; Distinct
|
||||
j_lj_t3 index id id 4 NULL 2 where used; Using index; Distinct
|
||||
t3_lj index id id 8 NULL 1 where used; Using index; Distinct
|
||||
j_lj_t2 index id id 4 NULL 2 Using where; Using index; Distinct
|
||||
t2_lj index id id 8 NULL 1 Using where; Using index; Distinct
|
||||
j_lj_t3 index id id 4 NULL 2 Using where; Using index; Distinct
|
||||
t3_lj index id id 8 NULL 1 Using where; Using index; Distinct
|
||||
SELECT DISTINCT
|
||||
t1.id
|
||||
from
|
||||
|
|
|
|||
|
|
@ -10,13 +10,13 @@ id str
|
|||
3 foo
|
||||
explain select * from t1 where str is null;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ref str str 11 const 1 where used
|
||||
t1 ref str str 11 const 1 Using where
|
||||
explain select * from t1 where str="foo";
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 const str str 11 const 1
|
||||
explain select * from t1 ignore key (str) where str="foo";
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ALL NULL NULL NULL NULL 4 where used
|
||||
t1 ALL NULL NULL NULL NULL 4 Using where
|
||||
explain select * from t1 use key (str,str) where str="foo";
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 const str str 11 const 1
|
||||
|
|
|
|||
|
|
@ -234,10 +234,10 @@ userid count(*)
|
|||
1 2
|
||||
explain select spid,count(*) from t1 where spid between 1 and 2 group by spid desc;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 range spID spID 5 NULL 2 where used; Using index
|
||||
t1 range spID spID 5 NULL 2 Using where; Using index
|
||||
explain select spid,count(*) from t1 where spid between 1 and 2 group by spid;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 range spID spID 5 NULL 2 where used; Using index
|
||||
t1 range spID spID 5 NULL 2 Using where; Using index
|
||||
select spid,count(*) from t1 where spid between 1 and 2 group by spid;
|
||||
spid count(*)
|
||||
1 1
|
||||
|
|
|
|||
|
|
@ -66,7 +66,7 @@ a
|
|||
alter table t1 type=myisam;
|
||||
explain select * from t1 where a in (869751,736494,226312,802616);
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 range uniq_id uniq_id 4 NULL 4 where used; Using index
|
||||
t1 range uniq_id uniq_id 4 NULL 4 Using where; Using index
|
||||
drop table t1;
|
||||
create table t1 (x int not null, y int not null, key x(x), unique y(y))
|
||||
type=heap;
|
||||
|
|
@ -159,17 +159,17 @@ create table t1 (btn char(10) not null, key(btn)) type=heap;
|
|||
insert into t1 values ("hello"),("hello"),("hello"),("hello"),("hello"),("a"),("b"),("c"),("d"),("e"),("f"),("g"),("h"),("i");
|
||||
explain select * from t1 where btn like "q%";
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ALL btn NULL NULL NULL 14 where used
|
||||
t1 ALL btn NULL NULL NULL 14 Using where
|
||||
select * from t1 where btn like "q%";
|
||||
btn
|
||||
alter table t1 add column new_col char(1) not null, add key (btn,new_col), drop key btn;
|
||||
update t1 set new_col=btn;
|
||||
explain select * from t1 where btn="a";
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ALL btn NULL NULL NULL 14 where used
|
||||
t1 ALL btn NULL NULL NULL 14 Using where
|
||||
explain select * from t1 where btn="a" and new_col="a";
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ref btn btn 11 const,const 10 where used
|
||||
t1 ref btn btn 11 const,const 10 Using where
|
||||
drop table t1;
|
||||
CREATE TABLE t1 (
|
||||
a int default NULL,
|
||||
|
|
@ -182,7 +182,7 @@ SELECT * FROM t1 WHERE a=NULL;
|
|||
a b
|
||||
explain SELECT * FROM t1 WHERE a IS NULL;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ref a a 5 const 10 where used
|
||||
t1 ref a a 5 const 10 Using where
|
||||
SELECT * FROM t1 WHERE a<=>NULL;
|
||||
a b
|
||||
NULL 99
|
||||
|
|
@ -190,7 +190,7 @@ SELECT * FROM t1 WHERE b=NULL;
|
|||
a b
|
||||
explain SELECT * FROM t1 WHERE b IS NULL;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ref b b 5 const 1 where used
|
||||
t1 ref b b 5 const 1 Using where
|
||||
SELECT * FROM t1 WHERE b<=>NULL;
|
||||
a b
|
||||
99 NULL
|
||||
|
|
|
|||
|
|
@ -140,13 +140,13 @@ id parent_id level
|
|||
1015 102 2
|
||||
explain select level from t1 where level=1;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ref level level 1 const 12 where used; Using index
|
||||
t1 ref level level 1 const 12 Using where; Using index
|
||||
explain select level,id from t1 where level=1;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ref level level 1 const 12 where used; Using index
|
||||
t1 ref level level 1 const 12 Using where; Using index
|
||||
explain select level,id,parent_id from t1 where level=1;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ref level level 1 const 12 where used
|
||||
t1 ref level level 1 const 12 Using where
|
||||
select level,id from t1 where level=1;
|
||||
level id
|
||||
1 1002
|
||||
|
|
@ -597,7 +597,7 @@ id parent_id level
|
|||
1016 102 2
|
||||
explain select level from t1 where level=1;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ref level level 1 const 6 where used; Using index
|
||||
t1 ref level level 1 const 6 Using where; Using index
|
||||
select level,id from t1 where level=1;
|
||||
level id
|
||||
1 1004
|
||||
|
|
@ -759,7 +759,7 @@ create table t1 (a int primary key,b int, c int, d int, e int, f int, g int, h
|
|||
insert into t1 values (1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1);
|
||||
explain select * from t1 where a > 0 and a < 50;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 range PRIMARY PRIMARY 4 NULL 1 where used
|
||||
t1 range PRIMARY PRIMARY 4 NULL 1 Using where
|
||||
drop table t1;
|
||||
create table t1 (id int NOT NULL,id2 int NOT NULL,id3 int NOT NULL,dummy1 char(30),primary key (id,id2),index index_id3 (id3)) type=innodb;
|
||||
insert into t1 values (0,0,0,'ABCDEFGHIJ'),(2,2,2,'BCDEFGHIJK'),(1,1,1,'CDEFGHIJKL');
|
||||
|
|
|
|||
|
|
@ -95,7 +95,7 @@ Impossible WHERE noticed after reading const tables
|
|||
explain select t1.*,t2.* from t1 left join t2 on t1.a=t2.a where isnull(t2.a)=1;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ALL NULL NULL NULL NULL 7
|
||||
t2 eq_ref PRIMARY PRIMARY 8 t1.a 1 where used
|
||||
t2 eq_ref PRIMARY PRIMARY 8 t1.a 1 Using where
|
||||
select t1.*,t2.*,t3.a from t1 left join t2 on (t1.a=t2.a) left join t1 as t3 on (t2.a=t3.a);
|
||||
grp a c id a c d a
|
||||
1 1 a 1 1 a 1 1
|
||||
|
|
@ -313,11 +313,11 @@ Lilliana Angelovska NULL NULL
|
|||
explain select t1.name, t2.name, t2.id from t1 left join t2 on (t1.id = t2.owner) where t2.id is null;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ALL NULL NULL NULL NULL 3
|
||||
t2 ALL NULL NULL NULL NULL 3 where used; Not exists
|
||||
t2 ALL NULL NULL NULL NULL 3 Using where; Not exists
|
||||
explain select t1.name, t2.name, t2.id from t1 left join t2 on (t1.id = t2.owner) where t2.name is null;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ALL NULL NULL NULL NULL 3
|
||||
t2 ALL NULL NULL NULL NULL 3 where used
|
||||
t2 ALL NULL NULL NULL NULL 3 Using where
|
||||
select count(*) from t1 left join t2 on (t1.id = t2.owner);
|
||||
count(*)
|
||||
4
|
||||
|
|
@ -333,11 +333,11 @@ Lilliana Angelovska NULL NULL
|
|||
explain select t1.name, t2.name, t2.id from t2 right join t1 on (t1.id = t2.owner) where t2.id is null;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ALL NULL NULL NULL NULL 3
|
||||
t2 ALL NULL NULL NULL NULL 3 where used; Not exists
|
||||
t2 ALL NULL NULL NULL NULL 3 Using where; Not exists
|
||||
explain select t1.name, t2.name, t2.id from t2 right join t1 on (t1.id = t2.owner) where t2.name is null;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ALL NULL NULL NULL NULL 3
|
||||
t2 ALL NULL NULL NULL NULL 3 where used
|
||||
t2 ALL NULL NULL NULL NULL 3 Using where
|
||||
select count(*) from t2 right join t1 on (t1.id = t2.owner);
|
||||
count(*)
|
||||
4
|
||||
|
|
@ -620,7 +620,7 @@ INSERT INTO t2 VALUES (1,1);
|
|||
explain SELECT * from t1 left join t2 on t1.id=t2.id where t2.id IS NULL;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ALL NULL NULL NULL NULL 2
|
||||
t2 index id id 8 NULL 1 where used; Using index; Not exists
|
||||
t2 index id id 8 NULL 1 Using where; Using index; Not exists
|
||||
SELECT * from t1 left join t2 on t1.id=t2.id where t2.id IS NULL;
|
||||
id name id idx
|
||||
2 no NULL NULL
|
||||
|
|
@ -640,7 +640,7 @@ insert into t2 values (10,1),(20,2),(30,3);
|
|||
explain select * from t2 left join t1 on t1.fooID = t2.fooID and t1.fooID = 30;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t2 index NULL PRIMARY 4 NULL 3 Using index
|
||||
t1 eq_ref PRIMARY PRIMARY 2 const 1 where used; Using index
|
||||
t1 eq_ref PRIMARY PRIMARY 2 const 1 Using where; Using index
|
||||
select * from t2 left join t1 on t1.fooID = t2.fooID and t1.fooID = 30;
|
||||
fooID barID fooID
|
||||
10 1 NULL
|
||||
|
|
|
|||
|
|
@ -36,7 +36,7 @@ a a a a
|
|||
explain select t1.*,t2.* from t1,t1 as t2 where t1.A=t2.B;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ALL a NULL NULL NULL 5
|
||||
t2 ALL b NULL NULL NULL 5 where used
|
||||
t2 ALL b NULL NULL NULL 5 Using where
|
||||
select t1.*,t2.* from t1,t1 as t2 where t1.A=t2.B order by binary t1.a,t2.a;
|
||||
a b a b
|
||||
A B a a
|
||||
|
|
|
|||
|
|
@ -35,10 +35,10 @@ insert into t1 select NULL,message from t2;
|
|||
create table t3 (a int not null, b char(20), key(a)) type=MERGE UNION=(test.t1,test.t2);
|
||||
explain select * from t3 where a < 10;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t3 range a a 4 NULL 10 where used
|
||||
t3 range a a 4 NULL 10 Using where
|
||||
explain select * from t3 where a > 10 and a < 20;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t3 range a a 4 NULL 10 where used
|
||||
t3 range a a 4 NULL 10 Using where
|
||||
select * from t3 where a = 10;
|
||||
a b
|
||||
10 Testing
|
||||
|
|
|
|||
|
|
@ -3,37 +3,37 @@ create table t1 (a int, b int not null,unique key (a,b),index(b)) type=myisam;
|
|||
insert ignore into t1 values (1,1),(2,2),(3,3),(4,4),(5,5),(6,6),(null,7),(9,9),(8,8),(7,7),(null,9),(null,9),(6,6);
|
||||
explain select * from t1 where a is null;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ref a a 5 const 3 where used; Using index
|
||||
t1 ref a a 5 const 3 Using where; Using index
|
||||
explain select * from t1 where a is null and b = 2;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ref a,b a 9 const,const 1 where used; Using index
|
||||
t1 ref a,b a 9 const,const 1 Using where; Using index
|
||||
explain select * from t1 where a is null and b = 7;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ref a,b a 9 const,const 1 where used; Using index
|
||||
t1 ref a,b a 9 const,const 1 Using where; Using index
|
||||
explain select * from t1 where a=2 and b = 2;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 const a,b a 9 const,const 1
|
||||
explain select * from t1 where a<=>b limit 2;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 index NULL a 9 NULL 12 where used; Using index
|
||||
t1 index NULL a 9 NULL 12 Using where; Using index
|
||||
explain select * from t1 where (a is null or a > 0 and a < 3) and b < 5 limit 3;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 range a,b a 9 NULL 3 where used; Using index
|
||||
t1 range a,b a 9 NULL 3 Using where; Using index
|
||||
explain select * from t1 where (a is null or a = 7) and b=7;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ref a,b b 4 const 2 where used
|
||||
t1 ref a,b b 4 const 2 Using where
|
||||
explain select * from t1 where (a is null and b>a) or a is null and b=7 limit 2;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ref a,b a 5 const 3 where used; Using index
|
||||
t1 ref a,b a 5 const 3 Using where; Using index
|
||||
explain select * from t1 where a is null and b=9 or a is null and b=7 limit 3;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 range a,b a 9 NULL 2 where used; Using index
|
||||
t1 range a,b a 9 NULL 2 Using where; Using index
|
||||
explain select * from t1 where a > 1 and a < 3 limit 1;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 range a a 5 NULL 1 where used; Using index
|
||||
t1 range a a 5 NULL 1 Using where; Using index
|
||||
explain select * from t1 where a > 8 and a < 9;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 range a a 5 NULL 1 where used; Using index
|
||||
t1 range a a 5 NULL 1 Using where; Using index
|
||||
select * from t1 where a is null;
|
||||
a b
|
||||
NULL 7
|
||||
|
|
@ -66,43 +66,43 @@ NULL 9
|
|||
alter table t1 modify b blob not null, add c int not null, drop key a, add unique key (a,b(20),c), drop key b, add key (b(10));
|
||||
explain select * from t1 where a is null and b = 2;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ref a,b a 5 const 3 where used
|
||||
t1 ref a,b a 5 const 3 Using where
|
||||
explain select * from t1 where a is null and b = 2 and c=0;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ref a,b a 5 const 3 where used
|
||||
t1 ref a,b a 5 const 3 Using where
|
||||
explain select * from t1 where a is null and b = 7 and c=0;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ref a,b a 5 const 3 where used
|
||||
t1 ref a,b a 5 const 3 Using where
|
||||
explain select * from t1 where a=2 and b = 2;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ref a,b a 5 const 1 where used
|
||||
t1 ref a,b a 5 const 1 Using where
|
||||
explain select * from t1 where a<=>b limit 2;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ALL NULL NULL NULL NULL 12 where used
|
||||
t1 ALL NULL NULL NULL NULL 12 Using where
|
||||
explain select * from t1 where (a is null or a > 0 and a < 3) and b < 5 and c=0 limit 3;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 range a,b a 5 NULL 5 where used
|
||||
t1 range a,b a 5 NULL 5 Using where
|
||||
explain select * from t1 where (a is null or a = 7) and b=7 and c=0;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 range a,b a 5 NULL 4 where used
|
||||
t1 range a,b a 5 NULL 4 Using where
|
||||
explain select * from t1 where (a is null and b>a) or a is null and b=7 limit 2;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ref a,b a 5 const 3 where used
|
||||
t1 ref a,b a 5 const 3 Using where
|
||||
explain select * from t1 where a is null and b=9 or a is null and b=7 limit 3;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ref a,b a 5 const 3 where used
|
||||
t1 ref a,b a 5 const 3 Using where
|
||||
explain select * from t1 where a > 1 and a < 3 limit 1;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 range a a 5 NULL 1 where used
|
||||
t1 range a a 5 NULL 1 Using where
|
||||
explain select * from t1 where a is null and b=7 or a > 1 and a < 3 limit 1;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 range a,b a 5 NULL 4 where used
|
||||
t1 range a,b a 5 NULL 4 Using where
|
||||
explain select * from t1 where a > 8 and a < 9;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 range a a 5 NULL 1 where used
|
||||
t1 range a a 5 NULL 1 Using where
|
||||
explain select * from t1 where b like "6%";
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 range b b 12 NULL 1 where used
|
||||
t1 range b b 12 NULL 1 Using where
|
||||
select * from t1 where a is null;
|
||||
a b c
|
||||
NULL 7 0
|
||||
|
|
@ -152,7 +152,7 @@ INSERT INTO t1 VALUES (1,NULL),(2,NULL),(3,1),(4,2),(5,NULL),(6,NULL),(7,3),(8,4
|
|||
INSERT INTO t2 VALUES (1,NULL),(2,NULL),(3,1),(4,2),(5,NULL),(6,NULL),(7,3),(8,4),(9,NULL),(10,NULL);
|
||||
explain select id from t1 where uniq_id is null;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ref idx1 idx1 5 const 1 where used
|
||||
t1 ref idx1 idx1 5 const 1 Using where
|
||||
explain select id from t1 where uniq_id =1;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 const idx1 idx1 5 const 1
|
||||
|
|
|
|||
|
|
@ -264,13 +264,13 @@ create table t1 (a int not null, b int, c varchar(10), key (a, b, c));
|
|||
insert into t1 values (1, NULL, NULL), (1, NULL, 'b'), (1, 1, NULL), (1, 1, 'b'), (1, 1, 'b'), (2, 1, 'a'), (2, 1, 'b'), (2, 2, 'a'), (2, 2, 'b'), (2, 3, 'c'),(1,3,'b');
|
||||
explain select * from t1 where (a = 1 and b is null and c = 'b') or (a > 2) order by a desc;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 range a a 20 NULL 2 where used; Using index
|
||||
t1 range a a 20 NULL 2 Using where; Using index
|
||||
select * from t1 where (a = 1 and b is null and c = 'b') or (a > 2) order by a desc;
|
||||
a b c
|
||||
1 NULL b
|
||||
explain select * from t1 where a >= 1 and a < 3 order by a desc;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 range a a 4 NULL 10 where used; Using index
|
||||
t1 range a a 4 NULL 10 Using where; Using index
|
||||
select * from t1 where a >= 1 and a < 3 order by a desc;
|
||||
a b c
|
||||
2 3 c
|
||||
|
|
@ -286,7 +286,7 @@ a b c
|
|||
1 NULL NULL
|
||||
explain select * from t1 where a = 1 order by a desc, b desc;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ref a a 4 const 5 where used; Using index
|
||||
t1 ref a a 4 const 5 Using where; Using index
|
||||
select * from t1 where a = 1 order by a desc, b desc;
|
||||
a b c
|
||||
1 3 b
|
||||
|
|
@ -297,30 +297,30 @@ a b c
|
|||
1 NULL NULL
|
||||
explain select * from t1 where a = 1 and b is null order by a desc, b desc;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ref a a 9 const,const 2 where used; Using index; Using filesort
|
||||
t1 ref a a 9 const,const 2 Using where; Using index; Using filesort
|
||||
select * from t1 where a = 1 and b is null order by a desc, b desc;
|
||||
a b c
|
||||
1 NULL NULL
|
||||
1 NULL b
|
||||
explain select * from t1 where a >= 1 and a < 3 and b >0 order by a desc,b desc;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 range a a 9 NULL 8 where used; Using index; Using filesort
|
||||
t1 range a a 9 NULL 8 Using where; Using index; Using filesort
|
||||
explain select * from t1 where a = 2 and b >0 order by a desc,b desc;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 range a a 9 NULL 5 where used; Using index
|
||||
t1 range a a 9 NULL 5 Using where; Using index
|
||||
explain select * from t1 where a = 2 and b is null order by a desc,b desc;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ref a a 9 const,const 1 where used; Using index; Using filesort
|
||||
t1 ref a a 9 const,const 1 Using where; Using index; Using filesort
|
||||
explain select * from t1 where a = 2 and (b is null or b > 0) order by a
|
||||
desc,b desc;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 range a a 9 NULL 6 where used; Using index
|
||||
t1 range a a 9 NULL 6 Using where; Using index
|
||||
explain select * from t1 where a = 2 and b > 0 order by a desc,b desc;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 range a a 9 NULL 5 where used; Using index
|
||||
t1 range a a 9 NULL 5 Using where; Using index
|
||||
explain select * from t1 where a = 2 and b < 2 order by a desc,b desc;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 range a a 9 NULL 2 where used; Using index; Using filesort
|
||||
t1 range a a 9 NULL 2 Using where; Using index; Using filesort
|
||||
alter table t1 modify b int not null, modify c varchar(10) not null;
|
||||
explain select * from t1 order by a, b, c;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
|
|
@ -356,14 +356,14 @@ a b c
|
|||
1 0
|
||||
explain select * from t1 where (a = 1 and b = 1 and c = 'b') or (a > 2) order by a desc;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 range a a 18 NULL 3 where used; Using index
|
||||
t1 range a a 18 NULL 3 Using where; Using index
|
||||
select * from t1 where (a = 1 and b = 1 and c = 'b') or (a > 2) order by a desc;
|
||||
a b c
|
||||
1 1 b
|
||||
1 1 b
|
||||
explain select * from t1 where a < 2 and b <= 1 order by a desc, b desc;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 range a a 4 NULL 6 where used; Using index
|
||||
t1 range a a 4 NULL 6 Using where; Using index
|
||||
select * from t1 where a < 2 and b <= 1 order by a desc, b desc;
|
||||
a b c
|
||||
1 1 b
|
||||
|
|
@ -387,7 +387,7 @@ a b c
|
|||
1 1
|
||||
explain select * from t1 where a between 1 and 3 and b <= 1 order by a desc, b desc;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 range a a 8 NULL 10 where used; Using index
|
||||
t1 range a a 8 NULL 10 Using where; Using index
|
||||
select * from t1 where a between 1 and 3 and b <= 1 order by a desc, b desc;
|
||||
a b c
|
||||
2 1 b
|
||||
|
|
@ -399,7 +399,7 @@ a b c
|
|||
1 0
|
||||
explain select * from t1 where a between 0 and 1 order by a desc, b desc;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 range a a 4 NULL 5 where used; Using index
|
||||
t1 range a a 4 NULL 5 Using where; Using index
|
||||
select * from t1 where a between 0 and 1 order by a desc, b desc;
|
||||
a b c
|
||||
1 3 b
|
||||
|
|
@ -452,24 +452,24 @@ EXPLAIN select t1.gid, t2.sid, t3.uid from t3, t2, t1 where t2.gid = t1.gid and
|
|||
table type possible_keys key key_len ref rows Extra
|
||||
t1 index PRIMARY PRIMARY 4 NULL 6 Using index
|
||||
t2 eq_ref PRIMARY,uid PRIMARY 4 t1.gid 1
|
||||
t3 eq_ref PRIMARY PRIMARY 2 t2.uid 1 where used; Using index
|
||||
t3 eq_ref PRIMARY PRIMARY 2 t2.uid 1 Using where; Using index
|
||||
EXPLAIN SELECT t1.gid, t3.uid from t1, t3 where t1.gid = t3.uid order by t1.gid,t3.skr;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 index PRIMARY PRIMARY 4 NULL 6 Using index
|
||||
t3 eq_ref PRIMARY PRIMARY 2 t1.gid 1 where used
|
||||
t3 eq_ref PRIMARY PRIMARY 2 t1.gid 1 Using where
|
||||
EXPLAIN SELECT t1.gid, t2.sid, t3.uid from t2, t1, t3 where t2.gid = t1.gid and t2.uid = t3.uid order by t3.uid, t1.gid;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 index PRIMARY PRIMARY 4 NULL 6 Using index; Using temporary; Using filesort
|
||||
t2 eq_ref PRIMARY,uid PRIMARY 4 t1.gid 1
|
||||
t3 eq_ref PRIMARY PRIMARY 2 t2.uid 1 where used; Using index
|
||||
t3 eq_ref PRIMARY PRIMARY 2 t2.uid 1 Using where; Using index
|
||||
EXPLAIN SELECT t1.gid, t3.uid from t1, t3 where t1.gid = t3.uid order by t3.skr,t1.gid;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 index PRIMARY PRIMARY 4 NULL 6 Using index; Using temporary; Using filesort
|
||||
t3 eq_ref PRIMARY PRIMARY 2 t1.gid 1 where used
|
||||
t3 eq_ref PRIMARY PRIMARY 2 t1.gid 1 Using where
|
||||
EXPLAIN SELECT t1.gid, t3.uid from t1, t3 where t1.skr = t3.uid order by t1.gid,t3.skr;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ALL NULL NULL NULL NULL 6 Using temporary; Using filesort
|
||||
t3 eq_ref PRIMARY PRIMARY 2 t1.skr 1 where used
|
||||
t3 eq_ref PRIMARY PRIMARY 2 t1.skr 1 Using where
|
||||
drop table t1,t2,t3;
|
||||
CREATE TABLE t1 (
|
||||
`titre` char(80) NOT NULL default '',
|
||||
|
|
|
|||
|
|
@ -1328,19 +1328,19 @@ select t2.fld3 from t2 where fld3 LIKE 'don_t_find_me_please%';
|
|||
fld3
|
||||
explain select t2.fld3 from t2 where fld3 = 'honeysuckle';
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t2 ref fld3 fld3 30 const 1 where used; Using index
|
||||
t2 ref fld3 fld3 30 const 1 Using where; Using index
|
||||
explain select fld3 from t2 ignore index (fld3) where fld3 = 'honeysuckle';
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t2 index NULL fld3 30 NULL 1199 where used; Using index
|
||||
t2 index NULL fld3 30 NULL 1199 Using where; Using index
|
||||
explain select fld3 from t2 use index (fld1) where fld3 = 'honeysuckle';
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t2 index NULL fld3 30 NULL 1199 where used; Using index
|
||||
t2 index NULL fld3 30 NULL 1199 Using where; Using index
|
||||
explain select fld3 from t2 use index (fld3) where fld3 = 'honeysuckle';
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t2 ref fld3 fld3 30 const 1 where used; Using index
|
||||
t2 ref fld3 fld3 30 const 1 Using where; Using index
|
||||
explain select fld3 from t2 use index (fld1,fld3) where fld3 = 'honeysuckle';
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t2 ref fld3 fld3 30 const 1 where used; Using index
|
||||
t2 ref fld3 fld3 30 const 1 Using where; Using index
|
||||
explain select fld3 from t2 ignore index (fld3,not_used);
|
||||
Key column 'not_used' doesn't exist in table
|
||||
explain select fld3 from t2 use index (not_used);
|
||||
|
|
@ -1351,7 +1351,7 @@ honeysuckle
|
|||
honoring
|
||||
explain select t2.fld3 from t2 where fld3 >= 'honeysuckle' and fld3 <= 'honoring' order by fld3;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t2 range fld3 fld3 30 NULL 2 where used; Using index
|
||||
t2 range fld3 fld3 30 NULL 2 Using where; Using index
|
||||
select fld1,fld3 from t2 where fld3="Colombo" or fld3 = "nondecreasing" order by fld3;
|
||||
fld1 fld3
|
||||
148504 Colombo
|
||||
|
|
@ -1371,7 +1371,7 @@ fld1
|
|||
250502
|
||||
explain select fld1 from t2 where fld1=250501 or fld1="250502";
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t2 range fld1 fld1 4 NULL 2 where used; Using index
|
||||
t2 range fld1 fld1 4 NULL 2 Using where; Using index
|
||||
select fld1 from t2 where fld1=250501 or fld1=250502 or fld1 >= 250505 and fld1 <= 250601 or fld1 between 250501 and 250502;
|
||||
fld1
|
||||
250501
|
||||
|
|
@ -1380,7 +1380,7 @@ fld1
|
|||
250601
|
||||
explain select fld1 from t2 where fld1=250501 or fld1=250502 or fld1 >= 250505 and fld1 <= 250601 or fld1 between 250501 and 250502;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t2 range fld1 fld1 4 NULL 4 where used; Using index
|
||||
t2 range fld1 fld1 4 NULL 4 Using where; Using index
|
||||
select fld1,fld3 from t2 where companynr = 37 and fld3 like 'f%';
|
||||
fld1 fld3
|
||||
218401 faithful
|
||||
|
|
@ -1807,8 +1807,8 @@ select distinct fld3 from t2,t3 where t2.companynr = 34 and t2.fld1=t3.t2nr orde
|
|||
fld3
|
||||
explain select t3.t2nr,fld3 from t2,t3 where t2.companynr = 34 and t2.fld1=t3.t2nr order by t3.t2nr,fld3;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t2 ALL fld1 NULL NULL NULL 1199 where used; Using temporary; Using filesort
|
||||
t3 eq_ref PRIMARY PRIMARY 4 t2.fld1 1 where used; Using index
|
||||
t2 ALL fld1 NULL NULL NULL 1199 Using where; Using temporary; Using filesort
|
||||
t3 eq_ref PRIMARY PRIMARY 4 t2.fld1 1 Using where; Using index
|
||||
explain select * from t3 as t1,t3 where t1.period=t3.period order by t3.period;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ALL period NULL NULL NULL 41810 Using temporary; Using filesort
|
||||
|
|
@ -2575,11 +2575,11 @@ companynr companyname
|
|||
explain select t2.companynr,companyname from t2 left join t4 using (companynr) where t4.companynr is null;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t2 ALL NULL NULL NULL NULL 1199
|
||||
t4 eq_ref PRIMARY PRIMARY 1 test.t2.companynr 1 where used; Not exists
|
||||
t4 eq_ref PRIMARY PRIMARY 1 test.t2.companynr 1 Using where; Not exists
|
||||
explain select t2.companynr,companyname from t4 left join t2 using (companynr) where t2.companynr is null;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t4 ALL NULL NULL NULL NULL 12
|
||||
t2 ALL NULL NULL NULL NULL 1199 where used; Not exists
|
||||
t2 ALL NULL NULL NULL NULL 1199 Using where; Not exists
|
||||
select distinct t2.companynr,t4.companynr from t2,t4 where t2.companynr=t4.companynr+1;
|
||||
companynr companynr
|
||||
37 36
|
||||
|
|
@ -2587,7 +2587,7 @@ companynr companynr
|
|||
explain select distinct t2.companynr,t4.companynr from t2,t4 where t2.companynr=t4.companynr+1;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t2 ALL NULL NULL NULL NULL 1199 Using temporary
|
||||
t4 index NULL PRIMARY 1 NULL 12 where used; Using index
|
||||
t4 index NULL PRIMARY 1 NULL 12 Using where; Using index
|
||||
select t2.fld1,t2.companynr,fld3,period from t3,t2 where t2.fld1 = 38208 and t2.fld1=t3.t2nr and period = 1008 or t2.fld1 = 38008 and t2.fld1 =t3.t2nr and period = 1008;
|
||||
fld1 companynr fld3 period
|
||||
038008 37 reporters 1008
|
||||
|
|
|
|||
|
|
@ -72,3 +72,25 @@ id val elt(two.val,'one','two')
|
|||
2 1 one
|
||||
4 2 two
|
||||
drop table t1,t2;
|
||||
drop table if exists t1;
|
||||
CREATE TABLE t1 (
|
||||
d datetime default NULL
|
||||
) TYPE=MyISAM;
|
||||
INSERT INTO t1 VALUES ('2002-10-24 14:50:32'),('2002-10-24 14:50:33'),('2002-10-24 14:50:34'),('2002-10-24 14:50:34'),('2002-10-24 14:50:34'),('2002-10-24 14:50:35'),('2002-10-24 14:50:35'),('2002-10-24 14:50:35'),('2002-10-24 14:50:35'),('2002-10-24 14:50:36'),('2002-10-24 14:50:36'),('2002-10-24 14:50:36'),('2002-10-24 14:50:36'),('2002-10-24 14:50:37'),('2002-10-24 14:50:37'),('2002-10-24 14:50:37'),('2002-10-24 14:50:37'),('2002-10-24 14:50:38'),('2002-10-24 14:50:38'),('2002-10-24 14:50:38'),('2002-10-24 14:50:39'),('2002-10-24 14:50:39'),('2002-10-24 14:50:39'),('2002-10-24 14:50:39'),('2002-10-24 14:50:40'),('2002-10-24 14:50:40'),('2002-10-24 14:50:40');
|
||||
flush status;
|
||||
select * from t1 group by d;
|
||||
d
|
||||
2002-10-24 14:50:32
|
||||
2002-10-24 14:50:33
|
||||
2002-10-24 14:50:34
|
||||
2002-10-24 14:50:35
|
||||
2002-10-24 14:50:36
|
||||
2002-10-24 14:50:37
|
||||
2002-10-24 14:50:38
|
||||
2002-10-24 14:50:39
|
||||
2002-10-24 14:50:40
|
||||
show status like "created_tmp%tables";
|
||||
Variable_name Value
|
||||
Created_tmp_disk_tables 0
|
||||
Created_tmp_tables 1
|
||||
drop table t1;
|
||||
|
|
|
|||
|
|
@ -76,5 +76,5 @@ date numfacture expedition
|
|||
0000-00-00 00:00:00 1212 0001-00-00 00:00:00
|
||||
EXPLAIN SELECT * FROM t1 WHERE expedition='0001-00-00 00:00:00';
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ref expedition expedition 8 const 1 where used
|
||||
t1 ref expedition expedition 8 const 1 Using where
|
||||
drop table t1;
|
||||
|
|
|
|||
|
|
@ -19,14 +19,14 @@ i @vv1:=if(sv1.i,1,0) @vv2:=if(sv2.i,1,0) @vv3:=if(sv3.i,1,0) @vv1+@vv2+@vv3
|
|||
2 1 0 0 1
|
||||
explain select * from t1 where i=@vv1;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ref i i 4 const 1 where used
|
||||
t1 ref i i 4 const 1 Using where
|
||||
explain select * from t1 where @vv1:=@vv1+1 and i=@vv1;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ALL NULL NULL NULL NULL 3 where used
|
||||
t1 ALL NULL NULL NULL NULL 3 Using where
|
||||
explain select @vv1:=i from t1 where i=@vv1;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 index NULL i 4 NULL 3 where used; Using index
|
||||
t1 index NULL i 4 NULL 3 Using where; Using index
|
||||
explain select * from t1 where i=@vv1;
|
||||
table type possible_keys key key_len ref rows Extra
|
||||
t1 ref i i 4 const 1 where used
|
||||
t1 ref i i 4 const 1 Using where
|
||||
drop table t1,t2;
|
||||
|
|
|
|||
|
|
@ -108,7 +108,6 @@ show global variables like 'table_type';
|
|||
Variable_name Value
|
||||
table_type INNODB
|
||||
set GLOBAL query_cache_size=100000;
|
||||
set GLOBAL safe_show_database=0;
|
||||
set myisam_max_sort_file_size=10000, GLOBAL myisam_max_sort_file_size=20000;
|
||||
show variables like 'myisam_max_sort_file_size';
|
||||
Variable_name Value
|
||||
|
|
@ -276,7 +275,6 @@ 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 safe_show_database=1;
|
||||
set global server_id=100;
|
||||
set global slave_net_timeout=100;
|
||||
set global slow_launch_time=100;
|
||||
|
|
|
|||
|
|
@ -60,3 +60,21 @@ insert into t2 values (1,1),(2,1),(3,1),(4,2);
|
|||
# do a query using ELT, a join and an ORDER BY.
|
||||
select one.id, two.val, elt(two.val,'one','two') from t1 one, t2 two where two.id=one.id order by one.id;
|
||||
drop table t1,t2;
|
||||
|
||||
#
|
||||
# In MySQL 4.0.4 doing a GROUP BY on a NULL column created a disk based
|
||||
# temporary table when a memory based one would be good enough.
|
||||
|
||||
drop table if exists t1;
|
||||
|
||||
CREATE TABLE t1 (
|
||||
d datetime default NULL
|
||||
) TYPE=MyISAM;
|
||||
|
||||
|
||||
INSERT INTO t1 VALUES ('2002-10-24 14:50:32'),('2002-10-24 14:50:33'),('2002-10-24 14:50:34'),('2002-10-24 14:50:34'),('2002-10-24 14:50:34'),('2002-10-24 14:50:35'),('2002-10-24 14:50:35'),('2002-10-24 14:50:35'),('2002-10-24 14:50:35'),('2002-10-24 14:50:36'),('2002-10-24 14:50:36'),('2002-10-24 14:50:36'),('2002-10-24 14:50:36'),('2002-10-24 14:50:37'),('2002-10-24 14:50:37'),('2002-10-24 14:50:37'),('2002-10-24 14:50:37'),('2002-10-24 14:50:38'),('2002-10-24 14:50:38'),('2002-10-24 14:50:38'),('2002-10-24 14:50:39'),('2002-10-24 14:50:39'),('2002-10-24 14:50:39'),('2002-10-24 14:50:39'),('2002-10-24 14:50:40'),('2002-10-24 14:50:40'),('2002-10-24 14:50:40');
|
||||
|
||||
flush status;
|
||||
select * from t1 group by d;
|
||||
show status like "created_tmp%tables";
|
||||
drop table t1;
|
||||
|
|
|
|||
|
|
@ -65,7 +65,6 @@ 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 safe_show_database=0;
|
||||
|
||||
set myisam_max_sort_file_size=10000, GLOBAL myisam_max_sort_file_size=20000;
|
||||
show variables like 'myisam_max_sort_file_size';
|
||||
|
|
@ -188,7 +187,6 @@ 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 safe_show_database=1;
|
||||
set global server_id=100;
|
||||
set global slave_net_timeout=100;
|
||||
set global slow_launch_time=100;
|
||||
|
|
|
|||
|
|
@ -215,6 +215,7 @@ then
|
|||
if test -n "$open_files"
|
||||
then
|
||||
ulimit -n $open_files
|
||||
args="open-files-limit=$open_files $args"
|
||||
fi
|
||||
if test -n "$core_file_size"
|
||||
then
|
||||
|
|
|
|||
|
|
@ -274,7 +274,7 @@ static char* pidfile_name_ptr= pidfile_name;
|
|||
static pthread_t select_thread;
|
||||
static my_bool opt_noacl=0, opt_bootstrap=0, opt_myisam_log=0;
|
||||
my_bool opt_safe_user_create = 0, opt_no_mix_types = 0;
|
||||
my_bool opt_safe_show_db=0, lower_case_table_names, opt_old_rpl_compat;
|
||||
my_bool lower_case_table_names, opt_old_rpl_compat;
|
||||
my_bool opt_show_slave_auth_info, opt_sql_bin_update = 0;
|
||||
my_bool opt_log_slave_updates= 0;
|
||||
|
||||
|
|
@ -3234,8 +3234,7 @@ struct my_option my_long_options[] =
|
|||
#ifndef TO_BE_DELETED
|
||||
{"safe-show-database", OPT_SAFE_SHOW_DB,
|
||||
"Deprecated option; One should use GRANT SHOW DATABASES instead...",
|
||||
(gptr*) &opt_safe_show_db, (gptr*) &opt_safe_show_db, 0, GET_BOOL, NO_ARG,
|
||||
0, 0, 0, 0, 0, 0},
|
||||
0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
|
||||
#endif
|
||||
{"safe-user-create", OPT_SAFE_USER_CREATE,
|
||||
"Don't allow new user creation by the user who has no write privileges to the mysql.user table",
|
||||
|
|
|
|||
|
|
@ -195,8 +195,6 @@ sys_var_thd_enum sys_query_cache_type("query_cache_type",
|
|||
&SV::query_cache_type,
|
||||
&query_cache_type_typelib);
|
||||
#endif /* HAVE_QUERY_CACHE */
|
||||
sys_var_bool_ptr sys_safe_show_db("safe_show_database",
|
||||
&opt_safe_show_db);
|
||||
sys_var_long_ptr sys_server_id("server_id",&server_id);
|
||||
sys_var_bool_ptr sys_slave_compressed_protocol("slave_compressed_protocol",
|
||||
&opt_slave_compressed_protocol);
|
||||
|
|
@ -356,7 +354,6 @@ sys_var *sys_variables[]=
|
|||
&sys_read_buff_size,
|
||||
&sys_read_rnd_buff_size,
|
||||
&sys_rpl_recovery_rank,
|
||||
&sys_safe_show_db,
|
||||
&sys_safe_updates,
|
||||
&sys_select_limit,
|
||||
&sys_server_id,
|
||||
|
|
@ -499,7 +496,6 @@ struct show_var_st init_vars[]= {
|
|||
{sys_query_cache_size.name, (char*) &sys_query_cache_size, SHOW_SYS},
|
||||
{sys_query_cache_type.name, (char*) &sys_query_cache_type, SHOW_SYS},
|
||||
#endif /* HAVE_QUERY_CACHE */
|
||||
{sys_safe_show_db.name, (char*) &sys_safe_show_db, SHOW_SYS},
|
||||
{sys_server_id.name, (char*) &sys_server_id, SHOW_SYS},
|
||||
{sys_slave_net_timeout.name,(char*) &sys_slave_net_timeout, SHOW_SYS},
|
||||
{"skip_external_locking", (char*) &my_disable_locking, SHOW_MY_BOOL},
|
||||
|
|
|
|||
|
|
@ -1732,7 +1732,7 @@ int check_expected_error(THD* thd, RELAY_LOG_INFO* rli, int expected_error)
|
|||
"Slave: query '%s' partially completed on the master \
|
||||
and was aborted. There is a chance that your master is inconsistent at this \
|
||||
point. If you are sure that your master is ok, run this query manually on the\
|
||||
slave and then restart the slave with SET SQL_SLAVE_SKIP_COUNTER=1;\
|
||||
slave and then restart the slave with SET GLOBAL SQL_SLAVE_SKIP_COUNTER=1;\
|
||||
SLAVE START;", thd->query);
|
||||
rli->last_slave_errno = expected_error;
|
||||
sql_print_error("%s",rli->last_slave_error);
|
||||
|
|
|
|||
|
|
@ -77,9 +77,10 @@ int mysql_create_db(THD *thd, char *db, uint create_options, bool silent)
|
|||
{
|
||||
if (!thd->query)
|
||||
{
|
||||
/* The client used the old obsolete mysql_create_db() call */
|
||||
thd->query = path;
|
||||
thd->query_length = (uint) (strxmov(path,"create database ", db, NullS)-
|
||||
path);
|
||||
thd->query_length = (uint) (strxmov(path,"create database `", db, "`",
|
||||
NullS) - path);
|
||||
}
|
||||
{
|
||||
mysql_update_log.write(thd,thd->query, thd->query_length);
|
||||
|
|
|
|||
|
|
@ -3708,7 +3708,7 @@ create_tmp_table(THD *thd,TMP_TABLE_PARAM *param,List<Item> &fields,
|
|||
*blob_field= 0; // End marker
|
||||
|
||||
/* If result table is small; use a heap */
|
||||
if (blob_count || using_unique_constraint || group_null_items ||
|
||||
if (blob_count || using_unique_constraint ||
|
||||
(select_options & (OPTION_BIG_TABLES | SELECT_SMALL_RESULT)) ==
|
||||
OPTION_BIG_TABLES)
|
||||
{
|
||||
|
|
@ -7193,56 +7193,32 @@ static void select_describe(JOIN *join, bool need_tmp_table, bool need_order,
|
|||
{
|
||||
if (tab->use_quick == 2)
|
||||
{
|
||||
sprintf(buff_ptr,"range checked for each record (index map: %u)",
|
||||
sprintf(buff_ptr,"; Range checked for each record (index map: %u)",
|
||||
tab->keys);
|
||||
buff_ptr=strend(buff_ptr);
|
||||
}
|
||||
else
|
||||
buff_ptr=strmov(buff_ptr,"where used");
|
||||
buff_ptr=strmov(buff_ptr,"; Using where");
|
||||
}
|
||||
if (key_read)
|
||||
{
|
||||
if (buff != buff_ptr)
|
||||
{
|
||||
buff_ptr[0]=';' ; buff_ptr[1]=' '; buff_ptr+=2;
|
||||
}
|
||||
buff_ptr=strmov(buff_ptr,"Using index");
|
||||
}
|
||||
buff_ptr= strmov(buff_ptr,"; Using index");
|
||||
if (table->reginfo.not_exists_optimize)
|
||||
{
|
||||
if (buff != buff_ptr)
|
||||
{
|
||||
buff_ptr[0]=';' ; buff_ptr[1]=' '; buff_ptr+=2;
|
||||
}
|
||||
buff_ptr=strmov(buff_ptr,"Not exists");
|
||||
}
|
||||
buff_ptr= strmov(buff_ptr,"; Not exists");
|
||||
if (need_tmp_table)
|
||||
{
|
||||
need_tmp_table=0;
|
||||
if (buff != buff_ptr)
|
||||
{
|
||||
buff_ptr[0]=';' ; buff_ptr[1]=' '; buff_ptr+=2;
|
||||
}
|
||||
buff_ptr=strmov(buff_ptr,"Using temporary");
|
||||
buff_ptr= strmov(buff_ptr,"; Using temporary");
|
||||
}
|
||||
if (need_order)
|
||||
{
|
||||
need_order=0;
|
||||
if (buff != buff_ptr)
|
||||
{
|
||||
buff_ptr[0]=';' ; buff_ptr[1]=' '; buff_ptr+=2;
|
||||
}
|
||||
buff_ptr=strmov(buff_ptr,"Using filesort");
|
||||
buff_ptr= strmov(buff_ptr,"; Using filesort");
|
||||
}
|
||||
if (distinct & test_all_bits(used_tables,thd->used_tables))
|
||||
{
|
||||
if (buff != buff_ptr)
|
||||
{
|
||||
buff_ptr[0]=';' ; buff_ptr[1]=' '; buff_ptr+=2;
|
||||
}
|
||||
buff_ptr=strmov(buff_ptr,"Distinct");
|
||||
}
|
||||
item_list.push_back(new Item_string(buff,(uint) (buff_ptr - buff)));
|
||||
if (distinct && test_all_bits(used_tables,thd->used_tables))
|
||||
buff_ptr= strmov(buff_ptr,"; Distinct");
|
||||
if (buff_ptr == buff)
|
||||
buff_ptr+= 2;
|
||||
item_list.push_back(new Item_string(buff+2,(uint) (buff_ptr - buff)-2));
|
||||
// For next iteration
|
||||
used_tables|=table->map;
|
||||
if (result->send_data(item_list))
|
||||
|
|
|
|||
Loading…
Reference in a new issue