Linux ip-172-26-2-223 5.4.0-1018-aws #18-Ubuntu SMP Wed Jun 24 01:15:00 UTC 2020 x86_64
Apache
: 172.26.2.223 | : 18.217.142.228
Cant Read [ /etc/named.conf ]
8.1.13
www
www.github.com/MadExploits
Terminal
AUTO ROOT
Adminer
Backdoor Destroyer
Linux Exploit
Lock Shell
Lock File
Create User
CREATE RDP
PHP Mailer
BACKCONNECT
UNLOCK SHELL
HASH IDENTIFIER
CPANEL RESET
CREATE WP USER
BLACK DEFEND!
README
+ Create Folder
+ Create File
/
www /
server /
mysql /
mysql-test /
suite /
gcol /
inc /
[ HOME SHELL ]
Name
Size
Permission
Action
gcol_blocked_sql_funcs_main.in...
11.78
KB
-rw-r--r--
gcol_cleanup.inc
1.34
KB
-rw-r--r--
gcol_column_def_options.inc
20.94
KB
-rw-r--r--
gcol_dependancies_on_vcol.inc
2.39
KB
-rw-r--r--
gcol_handler.inc
3.03
KB
-rw-r--r--
gcol_init_vars.pre
1.17
KB
-rw-r--r--
gcol_ins_upd.inc
18.39
KB
-rw-r--r--
gcol_keys.inc
26.66
KB
-rw-r--r--
gcol_non_stored_columns.inc
6.42
KB
-rw-r--r--
gcol_partition.inc
5.8
KB
-rw-r--r--
gcol_rejected.inc
21.29
KB
-rw-r--r--
gcol_select.inc
40.05
KB
-rw-r--r--
gcol_supported_sql_funcs.inc
1.63
KB
-rw-r--r--
gcol_supported_sql_funcs_main....
41.09
KB
-rw-r--r--
gcol_trigger_sp.inc
2.84
KB
-rw-r--r--
gcol_unsupported_storage_engin...
1.38
KB
-rw-r--r--
gcol_view.inc
6.89
KB
-rw-r--r--
Delete
Unzip
Zip
${this.title}
Close
Code Editor : gcol_select.inc
################################################################################ # inc/gcol_select.inc # # # # Purpose: # # Testing different SELECTs. # # # # # #------------------------------------------------------------------------------# # Original Author: Andrey Zhakov # # Original Date: 2008-09-18 # # Change Author: # # Change Date: # # Change: # ################################################################################ # Table t1 is used below to test: # - Join type of ALL (sequential scan of the entire table) # - Join type of Index # - Join type of Range # - Join type of Ref_or_null create table t1 (a int, b int generated always as (-a) virtual, c int generated always as (-a) stored, index (c)); insert into t1 (a) values (2), (1), (1), (3), (NULL); # Table t2 is used below to test: # - Join type of system and const create table t2 like t1; insert into t2 (a) values (1); # Table t3 is used below to test # - Join type of Eq_ref with a unique generated column # - Join type of Const create table t3 (a int primary key, b int generated always as (-a) virtual, c int generated always as (-a) stored unique); insert into t3 (a) values (2),(1),(3); analyze table t1,t2,t3; --echo # select_type=SIMPLE, type=system let $s = select * from t2; eval $s; eval explain $s; let $s = select * from t2 where c=-1; eval $s; eval explain $s; --echo # select_type=SIMPLE, type=ALL let $s = select * from t1 where b=-1; eval $s; eval explain $s; --echo # select_type=SIMPLE, type=const let $s = select * from t3 where a=1; eval $s; eval explain $s; --echo # select_type=SIMPLE, type=range let $s = select * from t3 where c>=-1; eval $s; eval explain $s; --echo # select_type=SIMPLE, type=ref let $s = select * from t1,t3 where t1.c=t3.c and t3.c=-1; eval $s; eval explain $s; --echo # select_type=PRIMARY, type=index,ALL let $s = select * from t1 where b in (select c from t3); --sorted_result eval $s; eval explain $s; --echo # select_type=PRIMARY, type=range,ref --sorted_result let $s = select * from t1 where c in (select c from t3 where c between -2 and -1); eval $s; eval explain $s; --echo # select_type=UNION, type=system --echo # select_type=UNION RESULT, type=<union1,2> let $s = select * from t1 union select * from t2; --sorted_result eval $s; eval explain $s; --echo # select_type=DERIVED, type=system let $s = select * from (select a,b,c from t1) as t11; --sorted_result eval $s; eval explain $s; --echo ### --echo ### Using aggregate functions with/without DISTINCT --echo ### --echo # SELECT COUNT(*) FROM tbl_name let $s = select count(*) from t1; eval $s; eval explain $s; --echo # SELECT COUNT(DISTINCT <non-gcol>) FROM tbl_name let $s = select count(distinct a) from t1; eval $s; eval explain $s; --echo # SELECT COUNT(DISTINCT <non-stored gcol>) FROM tbl_name let $s = select count(distinct b) from t1; eval $s; eval explain $s; --echo # SELECT COUNT(DISTINCT <stored gcol>) FROM tbl_name let $s = select count(distinct c) from t1; eval $s; eval explain $s; --echo ### --echo ### filesort & range-based utils --echo ### --echo # SELECT * FROM tbl_name WHERE <gcol expr> let $s = select * from t3 where c >= -2; --sorted_result eval $s; eval explain $s; --echo # SELECT * FROM tbl_name WHERE <non-gcol expr> let $s = select * from t3 where a between 1 and 2; --sorted_result eval $s; eval explain $s; --echo # SELECT * FROM tbl_name WHERE <non-indexed gcol expr> let $s = select * from t3 where b between -2 and -1; --sorted_result eval $s; eval explain $s; --echo # SELECT * FROM tbl_name WHERE <indexed gcol expr> let $s = select * from t3 where c between -2 and -1; --sorted_result eval $s; eval explain $s; #### Remove for MyISAM due to a bug #### when all the three records are returned (a=1,2,3) #### instead of just two (a=1,2). #### This bug is presumably in base SQL routines as the same happens #### with this table: #### create table t4 (a int primary key, b int, c int unique); let $myisam_engine = `SELECT @@session.default_storage_engine='myisam'`; if (!$myisam_engine) { --echo # SELECT * FROM tbl_name WHERE <non-gcol expr> ORDER BY <non-indexed gcol> let $s = select * from t3 where a between 1 and 2 order by b; eval $s; eval explain $s; --echo # bug#20022189: WL411:DEBUG ASSERT AT FIELD_LONG::VAL_INT IN SQL/FIELD.CC --echo # SELECT * FROM tbl_name WHERE <non-gcol expr> ORDER BY <non-indexed stored gcol> let $s = select * from t3 where a between 1 and 2 order by c; eval $s; eval explain $s; } --echo # bug#20022189: WL411:DEBUG ASSERT AT FIELD_LONG::VAL_INT IN SQL/FIELD.CC CREATE TABLE t4 ( `pk` int(11) NOT NULL , `col_int_nokey` int(11) GENERATED ALWAYS AS (pk + col_int_key) STORED, `col_int_key` int(11) DEFAULT NULL, `col_date_nokey` date DEFAULT NULL, `col_datetime_key` datetime DEFAULT NULL, PRIMARY KEY (`pk`), KEY `col_int_key` (`col_int_key`), KEY `col_datetime_key` (`col_datetime_key`) ); INSERT INTO t4 VALUES (1,default,4,'2008-12-05','1900-01-01 00:00:00'); SELECT SQL_BIG_RESULT GRANDPARENT1 . `col_int_nokey` AS g1 FROM t4 AS GRANDPARENT1 LEFT JOIN t4 AS GRANDPARENT2 ON ( GRANDPARENT2 . `col_datetime_key` <= GRANDPARENT1 . `col_date_nokey` ) GROUP BY GRANDPARENT1 . `pk`; DROP TABLE t4; --echo # SELECT * FROM tbl_name WHERE <non-gcol expr> ORDER BY <indexed gcol> let $s = select * from t3 where a between 1 and 2 order by c; eval $s; eval explain $s; --echo # SELECT * FROM tbl_name WHERE <non-indexed gcol expr> ORDER BY <non-gcol> let $s = select * from t3 where b between -2 and -1 order by a; eval $s; eval explain $s; #### Remove for MyISAM due to a bug #### when all the three records are returned (a=1,2,3) #### instead of just two (a=1,2). #### This bug is presumably in base SQL routines as the same happens #### with this table: #### create table t4 (a int primary key, b int, c int unique); let $innodb_engine = `SELECT @@session.default_storage_engine='innodb'`; if (!$innodb_engine) { --echo # SELECT * FROM tbl_name WHERE <indexed gcol expr> ORDER BY <non-gcol> let $s = select * from t3 where c between -2 and -1 order by a; eval $s; eval explain $s; } --echo # SELECT * FROM tbl_name WHERE <non-indexed gcol expr> ORDER BY <non-indexed gcol> let $s = select * from t3 where b between -2 and -1 order by b; eval $s; eval explain $s; --echo # SELECT * FROM tbl_name WHERE <indexed gcol expr> ORDER BY <non-indexed gcol> let $s = select * from t3 where c between -2 and -1 order by b; eval $s; eval explain $s; --echo # SELECT * FROM tbl_name WHERE <non-indexed gcol expr> ORDER BY <indexed gcol> let $s = select * from t3 where b between -2 and -1 order by c; eval $s; eval explain $s; --echo # SELECT * FROM tbl_name WHERE <indexed gcol expr> ORDER BY <indexed gcol> let $s = select * from t3 where c between -2 and -1 order by c; eval $s; eval explain $s; --echo # SELECT sum(<non-indexed gcol>) FROM tbl_name GROUP BY <non-indexed gcol> let $s = select sum(b) from t1 group by b; eval $s; eval explain $s; --echo # SELECT sum(<indexed gcol>) FROM tbl_name GROUP BY <indexed gcol> let $s = select sum(c) from t1 group by c; eval $s; eval explain $s; --echo # SELECT sum(<non-indexed gcol>) FROM tbl_name GROUP BY <indexed gcol> let $s = select sum(b) from t1 group by c; eval $s; eval explain $s; --echo # SELECT sum(<indexed gcol>) FROM tbl_name GROUP BY <non-indexed gcol> let $s = select sum(c) from t1 group by b; eval $s; eval explain $s; drop table t1; --echo # --echo # Bug#20241655: WL411:FAILING ASSERTION ASSERTION --echo # CREATE TABLE BB ( col_time_key time NOT NULL, col_time_nokey time GENERATED ALWAYS AS (ADDTIME(col_datetime_key, col_time_key)) VIRTUAL, col_datetime_key datetime NOT NULL); INSERT INTO BB VALUES('23:28:02', default, '2005-03-15 22:48:25'); CREATE TABLE CC ( col_time_key time NOT NULL, col_time_nokey time GENERATED ALWAYS AS (ADDTIME(col_datetime_key, col_time_key)) VIRTUAL, col_datetime_key datetime NOT NULL ); INSERT INTO CC VALUES('16:22:51', default, '1900-01-01 00:00:00'); SELECT 1 AS g1 FROM BB AS gp1 LEFT JOIN BB AS gp2 USING ( col_time_nokey); DROP TABLE BB, CC; --echo # --echo # Bug#20328786: WL411:VALGRIND WARNINGS OF CONDITIONAL --echo # JUMP WHILE SELECTING FROM VIEW --echo # CREATE TABLE A ( pk INTEGER AUTO_INCREMENT, col_int_nokey INTEGER, col_int_key INTEGER GENERATED ALWAYS AS (2 + 2 + col_int_nokey) STORED, PRIMARY KEY (pk) ); CREATE TABLE C ( pk INTEGER AUTO_INCREMENT, col_int_nokey INTEGER, col_int_key INTEGER GENERATED ALWAYS AS (2 + 2 + col_int_nokey) STORED, col_varchar_nokey VARCHAR(1), col_varchar_key VARCHAR(2) GENERATED ALWAYS AS (CONCAT(col_varchar_nokey, col_varchar_nokey)) STORED, PRIMARY KEY (pk), KEY (col_int_key), KEY (col_varchar_key, col_int_key) ); INSERT INTO C ( col_int_nokey, col_varchar_nokey ) VALUES (4, 'v'),(62, 'v'),(7, 'c'),(1, NULL),(0, 'x'),(7, 'i'),(7, 'e'),(1, 'p'),(7, 's'),(1, 'j'),(5, 'z'),(2, 'c'),(0, 'a'),(1, 'q'),(8, 'y'),(1, NULL),(1, 'r'),(9, 'v'),(1, NULL),(5, 'r'); CREATE OR REPLACE ALGORITHM=MERGE VIEW V1 AS SELECT alias1. col_varchar_key AS field1 , alias1.pk AS field2, alias2. col_int_nokey AS field3 FROM C AS alias1 LEFT JOIN A AS alias2 ON alias1.pk = alias2.col_int_key WHERE alias1.pk > 8 AND alias1 .pk < ( 9 + 2 ) AND alias1.col_int_key <> 1 OR alias1.col_int_key > 0 AND alias1.col_int_key <= ( 3 + 2 ) ORDER BY field1, field2, field3 LIMIT 100 OFFSET 6; SELECT * FROM V1; DROP VIEW V1; DROP TABLE A,C; --echo # --echo # Bug#20406510: WL411:VALGRIND WARNINGS WITH --echo # COUNT DISTINCT QUERY ON VIRTUAL GC VARCHAR COLUMN --echo # CREATE TABLE A ( pk INTEGER AUTO_INCREMENT, col_time_key TIME NOT NULL, col_datetime_key DATETIME NOT NULL, PRIMARY KEY (pk), KEY (col_time_key), KEY (col_datetime_key) ); CREATE TABLE C ( pk INTEGER AUTO_INCREMENT, col_int_key INTEGER NOT NULL, col_varchar_key VARCHAR(1) NOT NULL, col_varchar_nokey VARCHAR(2) GENERATED ALWAYS AS (CONCAT(col_varchar_key, col_varchar_key)), PRIMARY KEY (pk), KEY (col_int_key), KEY (col_varchar_key, col_int_key) ); INSERT INTO C (col_int_key,col_varchar_key) VALUES (0, 'j'),(8, 'v'),(1, 'c'),(8, 'm'),(9, 'd'); SELECT MIN( alias2 . col_int_key ) AS field1, COUNT( DISTINCT alias2 . col_varchar_nokey ) AS field2 FROM ( A AS alias1 , C AS alias2 ) ORDER BY alias1.col_time_key, alias1.col_datetime_key, alias1.pk ASC; DROP TABLE A,C; --echo # --echo # Bug#20566325: WL8149: INNODB: FAILING ASSERTION: --echo # COL_NR < TABLE->N_DEF --echo # CREATE TABLE A ( pk INTEGER AUTO_INCREMENT, col_varchar_nokey VARCHAR(1) NOT NULL, col_varchar_key VARCHAR(2) GENERATED ALWAYS AS (CONCAT(col_varchar_nokey, col_varchar_nokey)), PRIMARY KEY (pk) ); INSERT /*! IGNORE */ INTO A (col_varchar_nokey) VALUES ('k'); CREATE TABLE CC ( pk INTEGER AUTO_INCREMENT, col_datetime_nokey DATETIME /*! NULL */, col_time_nokey TIME /*! NULL */, col_time_key TIME GENERATED ALWAYS AS (ADDTIME(col_datetime_nokey, col_time_nokey)), col_varchar_nokey VARCHAR(1) /*! NULL */, col_varchar_key VARCHAR(2) GENERATED ALWAYS AS (CONCAT(col_varchar_nokey, col_varchar_nokey)), PRIMARY KEY (pk)); INSERT INTO CC (col_time_nokey,col_datetime_nokey,col_varchar_nokey) VALUES ('13:06:13.033877','1900-01-01 00:00:00', 'p'), (NULL, '2007-05-25 11:58:54.015689', 'g'); SELECT table1.col_time_key AS field1, 'z' AS field2 FROM (CC AS table1 LEFT OUTER JOIN (A AS table2 STRAIGHT_JOIN CC AS table3 ON (table3.col_varchar_key = table2.col_varchar_nokey)) ON (table3.col_varchar_key = table2.col_varchar_nokey)) WHERE table2.pk != 6 AND table1.col_varchar_key IN ('l', 's' , 'b' ) AND table3.col_varchar_key != table1.col_varchar_key ORDER BY table1.col_varchar_key , field1 , field2; DROP TABLE A,CC; if ($support_virtual_index) { --echo # --echo # Bug#20573302: WL8149: SEGV IN HA_INNOBASE:: --echo # BUILD_TEMPLATE AT INNOBASE/HANDLER/HA_INNODB.CC:665 --echo # CREATE TABLE c ( pk INTEGER AUTO_INCREMENT, col_int_nokey INTEGER NOT NULL, col_int_key INTEGER GENERATED ALWAYS AS (col_int_nokey) VIRTUAL, col_date_nokey DATE NOT NULL, col_date_key DATE GENERATED ALWAYS AS (DATE_ADD(col_date_nokey,interval 30 day)) VIRTUAL, col_datetime_nokey DATETIME NOT NULL, col_time_nokey TIME NOT NULL, col_datetime_key DATETIME GENERATED ALWAYS AS (ADDTIME(col_datetime_nokey, col_time_nokey)), col_time_key TIME GENERATED ALWAYS AS (ADDTIME(col_datetime_nokey, col_time_nokey)), col_varchar_nokey VARCHAR(1) NOT NULL, col_varchar_key VARCHAR(2) GENERATED ALWAYS AS (CONCAT(col_varchar_nokey, col_varchar_nokey)), PRIMARY KEY (pk), KEY (col_int_key), KEY (col_varchar_key), KEY (col_date_key), KEY (col_time_key), KEY (col_datetime_key), KEY (col_int_key, col_varchar_key), KEY (col_int_key, col_varchar_key, col_date_key, col_time_key, col_datetime_key)); INSERT /*! IGNORE */ INTO c ( col_int_nokey, col_date_nokey, col_time_nokey, col_datetime_nokey, col_varchar_nokey ) VALUES (1, '2009-12-01', '00:21:38.058143', '2007-05-28 00:00:00', 'c'), (8, '2004-12-17', '04:08:02.046897', '2009-07-25 09:21:20.064099', 'm'), (9, '2000-03-14', '16:25:11.040240', '2002-01-16 00:00:00', 'd'), (24, '2000-10-08', '10:14:58.018534', '2006-10-12 04:32:53.031976', 'd'), (6, '2006-05-25', '19:47:59.011283', '2001-02-15 03:08:38.035426', 'y'), (1, '2008-01-23', '11:14:24.032949', '2004-10-02 20:31:15.022553', 't'), (6, '2007-06-18', NULL, '2002-08-20 22:48:00.035785', 'd'), (2, '2002-10-13', '00:00:00', '1900-01-01 00:00:00', 's'), (4, '1900-01-01', '15:57:25.019666', '2005-08-15 00:00:00', 'r'), (8, NULL, '07:05:51.006712', '1900-01-01 00:00:00', 'm'), (4, '2006-03-09', '19:22:21.057406', '2008-05-16 08:09:06.002924', 'b'), (4, '2001-06-05', '03:53:16.001370', '2001-01-20 12:47:23.022022', 'x'), (7, '2006-05-28', '09:16:38.034570', '2008-07-02 00:00:00', 'g'), (4, '2001-04-19', '15:37:26.028315', '1900-01-01 00:00:00', 'p'), (1, '1900-01-01', '00:00:00', '2002-12-08 11:34:58.001571', 'q'), (9, '2004-08-20', '05:03:03.047452', '1900-01-01 00:00:00', 'w'), (4, '2004-10-10', '02:59:24.063764', '1900-01-01 00:00:00', 'd'), (8, '2000-04-02', '00:01:58.064243', '2002-08-25 20:35:06.064634', 'e'), (4, '2006-11-02', '00:00:00', '2001-10-22 11:13:24.048128', 'b'), (8, '2009-01-28', '02:20:16.024931', '2003-03-12 02:00:34.029335', 'y'); CREATE TABLE cc ( pk INTEGER AUTO_INCREMENT, col_int_nokey INTEGER NOT NULL, col_int_key INTEGER GENERATED ALWAYS AS (col_int_nokey) VIRTUAL, col_date_nokey DATE NOT NULL, col_date_key DATE GENERATED ALWAYS AS (DATE_ADD(col_date_nokey,interval 30 day)) VIRTUAL, col_datetime_nokey DATETIME NOT NULL, col_time_nokey TIME NOT NULL, col_datetime_key DATETIME GENERATED ALWAYS AS (ADDTIME(col_datetime_nokey, col_time_nokey)), col_time_key TIME GENERATED ALWAYS AS (ADDTIME(col_datetime_nokey, col_time_nokey)), col_varchar_nokey VARCHAR(1) NOT NULL, col_varchar_key VARCHAR(2) GENERATED ALWAYS AS (CONCAT(col_varchar_nokey, col_varchar_nokey)), PRIMARY KEY (pk), KEY (col_int_key), KEY (col_varchar_key), KEY (col_date_key), KEY (col_time_key), KEY (col_datetime_key), KEY (col_int_key, col_varchar_key), KEY (col_int_key, col_varchar_key, col_date_key, col_time_key, col_datetime_key)); INSERT /*! IGNORE */ INTO cc ( col_int_nokey, col_date_nokey, col_time_nokey, col_datetime_nokey, col_varchar_nokey ) VALUES (0, '2003-02-06', '22:02:09.059926', '2003-08-07 14:43:09.011144', 'x'), (0, '2005-04-16', '19:33:15.014160', '2005-12-11 00:00:00', 'n'), (1, '2005-07-23', '22:03:16.058787', '2005-12-26 20:48:07.043628', 'w'), (7, '2001-11-15', '06:31:23.027263', '2008-06-12 06:41:21.012493', 's'), (0, '2006-03-24', '02:19:08.013275', '2007-10-11 18:46:28.030000', 'a'), (4, '2008-07-10', NULL, '2006-04-04 22:22:40.057947', 'd'), (1, '2009-12-07', NULL, '2002-08-10 20:52:58.035137', 'w'), (1, '2008-05-01', '10:28:01.038587', '2008-10-03 11:17:23.005299', 'j'), (1, '2008-06-22', '00:00:00', '2009-01-06 20:11:01.034339', 'm'), (4, '2001-11-11', '15:02:50.048785', '2009-09-19 00:00:00', 'k'), (7, '2000-12-21', '05:29:13.012729', '2007-09-02 12:14:27.029187', 't'), (4, '2007-09-03', '23:45:33.048507', '2003-09-26 00:00:00', 'k'), (2, '2003-02-18', '19:10:53.057455', '2001-11-18 18:10:16.063189', 'e'), (0, '2008-12-01', '01:45:27.037313', '2005-02-15 04:08:17.015554', 'i'), (1, '2008-10-18', '03:56:03.060218', '2009-06-13 23:04:40.013006', 't'), (91, '2004-08-28', '12:43:17.023797', '1900-01-01 00:00:00', 'm'), (6, '2006-10-05', '13:33:46.053634', '2005-03-20 02:48:24.045653', 'z'), (3, '2003-05-16', NULL, '2002-03-16 11:47:27.045297', 'c'), (6, '2008-10-10', NULL, '2000-05-22 00:00:00', 'i'), (8, '2002-01-19', '05:18:40.006865', '2009-02-12 00:00:00', 'v'); --replace_column 10 # 11 # EXPLAIN SELECT subquery2_t2.col_int_key AS subquery2_field1 FROM (c AS subquery2_t1 RIGHT JOIN (c AS subquery2_t2 LEFT JOIN cc AS subquery2_t3 ON (subquery2_t3.col_int_nokey = subquery2_t2.col_int_key )) ON (subquery2_t3.col_varchar_key = subquery2_t2.col_varchar_key)) ORDER BY subquery2_field1; SELECT subquery2_t2.col_int_key AS subquery2_field1 FROM (c AS subquery2_t1 RIGHT JOIN (c AS subquery2_t2 LEFT JOIN cc AS subquery2_t3 ON (subquery2_t3.col_int_nokey = subquery2_t2.col_int_key )) ON (subquery2_t3.col_varchar_key = subquery2_t2.col_varchar_key)) ORDER BY subquery2_field1; SELECT subquery2_t2.col_int_key AS subquery2_field1 FROM (c AS subquery2_t1 RIGHT JOIN (c AS subquery2_t2 LEFT JOIN cc AS subquery2_t3 ON (subquery2_t3.col_int_nokey = subquery2_t2.col_int_key )) ON (subquery2_t3.col_varchar_key = subquery2_t2.col_varchar_key)) ORDER BY subquery2_field1; DROP TABLE c,cc; --echo # --echo # Bug#2081065: WL8149:RESULT DIFF SEEN FOR SIMPLE --echo # RANGE QUERIES WITH ORDER BY --echo # CREATE TABLE cc ( pk INTEGER AUTO_INCREMENT, col_int_nokey INTEGER NOT NULL, col_int_key INTEGER GENERATED ALWAYS AS (col_int_nokey + col_int_nokey) VIRTUAL, PRIMARY KEY (pk), KEY (col_int_key) ); INSERT INTO cc (col_int_nokey) VALUES (0),(1),(7),(0),(4),(5); --replace_column 10 # 11 # EXPLAIN SELECT pk FROM cc WHERE col_int_key > 3; SELECT pk FROM cc WHERE col_int_key > 3; --replace_column 10 # 11 # EXPLAIN SELECT pk FROM cc WHERE col_int_key > 3 ORDER BY 1; SELECT pk FROM cc WHERE col_int_key > 3 ORDER BY 1; DROP TABLE cc; --echo # --echo # Bug#20849676 :WL8149:ASSERTION `!TABLE || (!TABLE->READ_SET --echo # || BITMAP_IS_SET(TABLE->READ_SET --echo # CREATE TABLE c ( pk INTEGER AUTO_INCREMENT, col_int_nokey INTEGER NOT NULL, col_int_key INTEGER GENERATED ALWAYS AS (col_int_nokey + col_int_nokey) VIRTUAL, col_varchar_nokey VARCHAR(1) NOT NULL, col_varchar_key VARCHAR(2) GENERATED ALWAYS AS (CONCAT(col_varchar_nokey, col_varchar_nokey)), PRIMARY KEY (pk), KEY (col_int_key), KEY (col_varchar_key), KEY (col_int_key, col_varchar_key) ) ; INSERT INTO c (col_int_nokey, col_varchar_nokey) VALUES (1, 'c'),(8, 'm'),(9, 'd'),(24, 'd'),(6, 'y'),(1, 't'),(6, 'd'), (2, 'r'),(8, 'm'),(4, 'b'),(4, 'x'),(7, 'g'),(4, 'p'),(1, 'q'), (9, 'w'),(4, 'd'),(8, 'e'),(4, 'b'),(8, 'y'); CREATE TABLE a ( pk INTEGER AUTO_INCREMENT, col_datetime_nokey DATETIME NOT NULL, col_time_nokey TIME NOT NULL, col_datetime_key DATETIME GENERATED ALWAYS AS (ADDTIME(col_datetime_nokey, col_time_nokey)), col_time_key TIME GENERATED ALWAYS AS (ADDTIME(col_datetime_nokey, col_time_nokey)), col_varchar_nokey VARCHAR(1) NOT NULL, col_varchar_key VARCHAR(2) GENERATED ALWAYS AS (CONCAT(col_varchar_nokey, col_varchar_nokey)), PRIMARY KEY (pk), KEY (col_varchar_key), KEY (col_time_key), KEY (col_datetime_key), KEY (col_varchar_key, col_time_key, col_datetime_key) ); INSERT INTO a ( col_time_nokey, col_datetime_nokey, col_varchar_nokey) VALUES ('04:08:02.046897', '2001-11-04 19:07:55.051133', 'k'); ANALYZE TABLE a, c; --replace_column 10 # --disable_warnings EXPLAIN SELECT table1.pk AS field1 , table1.col_datetime_key AS field2 FROM ( a AS table1 LEFT JOIN ( ( c AS table2 STRAIGHT_JOIN ( SELECT SUBQUERY1_t1.* FROM ( c AS SUBQUERY1_t1 INNER JOIN ( c AS SUBQUERY1_t2 STRAIGHT_JOIN c AS SUBQUERY1_t3 ON (SUBQUERY1_t3.col_varchar_key = SUBQUERY1_t2.col_varchar_key ) ) ON (SUBQUERY1_t3.pk = SUBQUERY1_t2.col_int_key OR SUBQUERY1_t1.col_int_key <> 1 ) ) WHERE SUBQUERY1_t2.pk >= 9 ) AS table3 ON (table3.col_int_key = table2.col_int_key ) ) ) ON (table3.col_int_nokey = table2.pk ) ) GROUP BY field1, field2; SELECT table1.pk AS field1 , table1.col_datetime_key AS field2 FROM ( a AS table1 LEFT JOIN ( ( c AS table2 STRAIGHT_JOIN ( SELECT SUBQUERY1_t1.* FROM ( c AS SUBQUERY1_t1 INNER JOIN ( c AS SUBQUERY1_t2 STRAIGHT_JOIN c AS SUBQUERY1_t3 ON (SUBQUERY1_t3.col_varchar_key = SUBQUERY1_t2.col_varchar_key ) ) ON (SUBQUERY1_t3.pk = SUBQUERY1_t2.col_int_key OR SUBQUERY1_t1.col_int_key <> 1 ) ) WHERE SUBQUERY1_t2.pk >= 9 ) AS table3 ON (table3.col_int_key = table2.col_int_key ) ) ) ON (table3.col_int_nokey = table2.pk ) ) GROUP BY field1, field2; --enable_warnings DROP TABLE IF EXISTS c,a; CREATE TABLE c ( col_int_nokey INTEGER NOT NULL, col_int_key INTEGER GENERATED ALWAYS AS (col_int_nokey + col_int_nokey) VIRTUAL, col_varchar_nokey VARCHAR(1) NOT NULL, col_varchar_key VARCHAR(2) GENERATED ALWAYS AS (CONCAT(col_varchar_nokey, col_varchar_nokey)), KEY (col_int_key), KEY (col_int_key, col_varchar_key) ) ; INSERT INTO c ( col_int_nokey, col_varchar_nokey ) VALUES (1, 'c'),(8, 'm'),(9, 'd'),(24, 'd'),(6, 'y'),(1, 't'), (6, 'd'),(2, 's'),(4, 'r'),(8, 'm'),(4, 'b'),(4, 'x'),(7, 'g'),(4, 'p'), (1, 'q'),(9, 'w'),(4, 'd'),(8, 'e'),(4, 'b'),(8, 'y'); CREATE TABLE cc ( col_int_nokey INTEGER, col_int_key INTEGER GENERATED ALWAYS AS (col_int_nokey + col_int_nokey) VIRTUAL, col_varchar_nokey VARCHAR(1), col_varchar_key VARCHAR(2) GENERATED ALWAYS AS (CONCAT(col_varchar_nokey, col_varchar_nokey)), KEY (col_int_key), KEY (col_varchar_key), KEY (col_int_key, col_varchar_key), KEY (col_int_key, col_int_nokey), KEY (col_varchar_key, col_varchar_nokey) ); INSERT INTO cc ( col_int_nokey, col_varchar_nokey ) VALUES (8, 'p'),(9, 'g'),(9, 'i'),(4, 'p'),(7, 'h'),(1, 'e'),(8, 'e'),(6, 'u'), (6, 'j'),(6, 'e'),(1, 'z'),(227, 'w'),(NULL, 't'),(9, 'i'),(1, 'i'),(8, 'i'), (5, 'b'),(8,'m'),(7, 'j'),(2, 'v'); ANALYZE TABLE c, cc; --replace_column 10 # --disable_warnings let query=SELECT alias2 . col_varchar_key AS field1 FROM ( cc AS alias1 , cc AS alias2 ) WHERE ( alias2 . col_int_key , alias1 . col_int_nokey ) NOT IN ( SELECT DISTINCT SQ1_alias2 . col_int_nokey AS SQ1_field1 , SQ1_alias1 . col_int_key AS SQ1_field2 FROM ( cc AS SQ1_alias1 , c AS SQ1_alias2 ) GROUP BY SQ1_field1 , SQ1_field2 ) GROUP BY field1; eval EXPLAIN $query; eval $query; DROP TABLE IF EXISTS c,cc; SET @save_old_sql_mode= @@sql_mode; SET sql_mode=""; CREATE TABLE d ( col_int int(11) DEFAULT NULL, col_varchar_10_utf8 varchar(10) CHARACTER SET utf8 DEFAULT NULL, pk int(11) NOT NULL AUTO_INCREMENT, col_int_key int(11) GENERATED ALWAYS AS (col_int+col_int) VIRTUAL, col_varchar_10_utf8_key varchar(10) CHARACTER SET utf8 GENERATED ALWAYS AS (REPEAT(SUBSTRING(col_varchar_10_utf8, -1), 5)) VIRTUAL, PRIMARY KEY (pk), KEY col_int_key (col_int_key), KEY col_varchar_10_utf8_key (col_varchar_10_utf8_key), KEY cover_key1 (col_int_key, col_varchar_10_utf8_key) ); INSERT INTO d (col_int, col_varchar_10_utf8) VALUES ('qhlhtrovam',1),('how',2),('htrovamzqr',3),('rovamzqrdc',4),('well',5),('g',6),('rdcenchyhu',7),('want',8); SELECT table1.pk AS field1 FROM d AS table1 LEFT JOIN d AS table2 ON table1.col_varchar_10_utf8_key = table2.col_varchar_10_utf8_key WHERE table1.col_int_key IS NULL GROUP BY table1.pk ; DROP TABLE d; --echo # --echo # Bug#21153237: WL8149: QUERIES USING FILESORT --echo # ON VIRTUAL GC HAVING INDEX GIVES WRONG RESULTS --echo # CREATE TABLE j ( col_int int(11), pk int(11) NOT NULL, col_varchar_10_utf8 varchar(10) CHARACTER SET utf8 DEFAULT NULL, col_varchar_255_utf8_key varchar(255) CHARACTER SET utf8 GENERATED ALWAYS AS (col_varchar_10_utf8) VIRTUAL, PRIMARY KEY (pk), KEY cover_key1 (col_int, col_varchar_255_utf8_key)); INSERT INTO j(col_int, pk, col_varchar_10_utf8) VALUES(9, 1, '951910400'), (-1934295040, 2, '1235025920'),(-584581120, 3, '-1176633344'),(3, 4, '1074462720'); --replace_column 10 # EXPLAIN SELECT col_varchar_255_utf8_key FROM j ORDER BY 1; SELECT col_varchar_255_utf8_key FROM j ORDER BY col_varchar_255_utf8_key; DROP TABLE j; set sql_mode= @save_old_sql_mode; --enable_warnings } CREATE TABLE cc ( pk int(11) NOT NULL AUTO_INCREMENT, col_int_nokey int(11) NOT NULL, col_int_key int(11) GENERATED ALWAYS AS (col_int_nokey) STORED, col_date_nokey date NOT NULL, col_date_key date GENERATED ALWAYS AS (col_date_nokey) STORED, col_datetime_nokey datetime NOT NULL, col_time_nokey time NOT NULL, col_datetime_key datetime GENERATED ALWAYS AS (col_datetime_nokey)STORED, col_time_key time GENERATED ALWAYS AS (col_time_nokey) STORED, col_varchar_nokey varchar(1) NOT NULL, col_varchar_key varchar(1) GENERATED ALWAYS AS (col_varchar_nokey)STORED, PRIMARY KEY (pk), KEY gc_idx1 (col_int_key), KEY gc_idx2 (col_varchar_key), KEY gc_idx3 (col_date_key), KEY gc_idx4 (col_time_key), KEY gc_idx5 (col_datetime_key), KEY gc_idx6 (col_varchar_key,col_int_key), KEY gc_idx7 (col_date_key,col_datetime_key,col_time_key), KEY gc_idx8(col_int_key,col_varchar_key,col_date_key,col_time_key, col_datetime_key) ); INSERT INTO cc ( col_int_nokey, col_date_nokey, col_time_nokey, col_datetime_nokey, col_varchar_nokey ) VALUES (1, '2009-12-01', '00:21:38.058143', '2007-05-28 00:00:00', 'c'), (8, '2004-12-17', '04:08:02.046897', '2009-07-25 09:21:20.064099', 'm'), (9, '2000-03-14', '16:25:11.040240', '2002-01-16 00:00:00', 'd'), (24, '2000-10-08', '10:14:58.018534', '2006-10-12 04:32:53.031976', 'd'), (6, '2006-05-25', '19:47:59.011283', '2001-02-15 03:08:38.035426', 'y'), (1, '2008-01-23', '11:14:24.032949', '2004-10-02 20:31:15.022553', 't'); SET @save_old_sql_mode= @@sql_mode; SET sql_mode=""; # Warnings arrive in unpredictable order with NDB and cannot be sorted if ($testing_ndb) { --disable_warnings } SELECT DISTINCT alias1.col_varchar_key AS field1 FROM ( cc AS alias1 STRAIGHT_JOIN (( cc AS alias2 STRAIGHT_JOIN cc AS alias3 ON (alias3.col_varchar_key > alias2.col_varchar_key ) ) ) ON (( alias3 .pk >= alias2.col_int_nokey ) AND (alias3 .pk >= alias2.col_int_nokey ) )) WHERE alias1.col_varchar_key <= 'v' GROUP BY field1 HAVING field1 = 91 ORDER BY field1, alias1.col_date_key, field1 ASC, field1 DESC, alias1.col_time_key ASC, field1; DROP TABLE cc; SET sql_mode=@save_old_sql_mode; if ($testing_ndb) { --enable_warnings } --echo # --echo # Bug#20797941: WL8149:ASSERTION !TABLE || --echo # (!TABLE->READ_SET || BITMAP_IS_SET(TABLE->READ_SET --echo # CREATE TABLE t(a int, b int as(a+1)); INSERT INTO t(a) values(1),(2); SELECT * FROM t ORDER BY b; DROP TABLE t; if ($support_virtual_index) { --echo # --echo # Testing a few index-based accesses on the virtual column --echo # CREATE TABLE t1 ( id int(11) NOT NULL, b int(11) GENERATED ALWAYS AS (id+1) VIRTUAL NOT NULL, UNIQUE KEY (b) ); --error ER_BAD_NULL_ERROR INSERT INTO t1 (id) VALUES(NULL); --error ER_NON_DEFAULT_VALUE_FOR_GENERATED_COLUMN INSERT INTO t1 VALUES(2,3); INSERT INTO t1 (id) VALUES(2),(3); # constant table read with one index lookup EXPLAIN SELECT * FROM t1 FORCE INDEX(b) WHERE b=3; # eq_ref EXPLAIN SELECT * FROM t1 AS t2 STRAIGHT_JOIN t1 FORCE INDEX(b) WHERE t1.b=t2.b; # covering index scan EXPLAIN SELECT b FROM t1 FORCE INDEX(b); # range scan INSERT INTO t1 (id) VALUES(4),(5),(6),(7),(8),(9),(10); EXPLAIN SELECT b FROM t1 FORCE INDEX(b) WHERE b BETWEEN 1 AND 5; # index-subquery EXPLAIN SELECT * FROM t2 AS t1 WHERE b NOT IN (SELECT b FROM t1 FORCE INDEX(b)); DROP TABLE t1; } DROP TABLE t2, t3; --echo # --echo # Bug#21317507:GC: STORED COLUMN REJECTED, BUT VIRTUAL IS ACCEPTED --echo # # TODO: Figure out appropriate NDB tests here let $innodb_engine = `SELECT @@session.default_storage_engine='innodb'`; let $myisam_engine = `SELECT @@session.default_storage_engine='MyISAM'`; CREATE TABLE t1(a INT); INSERT INTO t1 VALUES(2147483647); --error 1221 ALTER TABLE t1 ADD INDEX idx(a), WITH VALIDATION; if ($myisam_engine) { --echo Should fail and column shouldn't be added --error 1264 ALTER TABLE t1 ADD COLUMN b SMALLINT AS (a) VIRTUAL; --error 1264 ALTER TABLE t1 ADD COLUMN c SMALLINT AS (a) VIRTUAL, WITH VALIDATION; --error 1264 ALTER TABLE t1 ADD COLUMN d SMALLINT AS (a) VIRTUAL, WITHOUT VALIDATION; ALTER TABLE t1 ADD COLUMN c INT AS(a) VIRTUAL; --error 1264 ALTER TABLE t1 CHANGE c c SMALLINT AS(a) VIRTUAL, WITH VALIDATION; --error 1264 ALTER TABLE t1 CHANGE c c SMALLINT AS(a) VIRTUAL, WITHOUT VALIDATION; --error 1264 ALTER TABLE t1 MODIFY c TINYINT AS(a) VIRTUAL, WITH VALIDATION; --error 1264 ALTER TABLE t1 MODIFY c TINYINT AS(a) VIRTUAL, WITHOUT VALIDATION; SELECT * FROM t1; } if ($innodb_engine) { ALTER TABLE t1 ADD COLUMN b SMALLINT AS (a) VIRTUAL; ALTER TABLE t1 DROP COLUMN b; --error 1264 ALTER TABLE t1 ADD COLUMN c SMALLINT AS (a) VIRTUAL, WITH VALIDATION; ALTER TABLE t1 ADD COLUMN d SMALLINT AS (a) VIRTUAL, WITHOUT VALIDATION; ALTER TABLE t1 DROP COLUMN d; ALTER TABLE t1 ADD COLUMN c INT AS(a) VIRTUAL; # Change of storage type isn't in-place in InnoDB even for VGC --error 1264 ALTER TABLE t1 CHANGE c c SMALLINT AS(a) VIRTUAL, WITH VALIDATION; --error 1264 ALTER TABLE t1 CHANGE c c SMALLINT AS(a) VIRTUAL, WITHOUT VALIDATION; --error 1264 ALTER TABLE t1 MODIFY c TINYINT AS(a) VIRTUAL, WITH VALIDATION; --error 1264 ALTER TABLE t1 MODIFY c TINYINT AS(a) VIRTUAL, WITHOUT VALIDATION; SELECT * FROM t1; } DROP TABLE t1; CREATE TABLE t1(a INT); INSERT INTO t1 VALUES(2147483647); ALTER TABLE t1 ADD COLUMN h INT AS (a) VIRTUAL, WITHOUT VALIDATION; --error 1845, 1846 ALTER TABLE t1 CHANGE h i INT AS (a) VIRTUAL, WITH VALIDATION, ALGORITHM=INPLACE; if ($innodb_engine) { ALTER TABLE t1 CHANGE h i INT AS (a) VIRTUAL, WITHOUT VALIDATION, ALGORITHM=INPLACE; } if ($myisam_engine) { --error 1845 ALTER TABLE t1 CHANGE h i INT AS (a) VIRTUAL, WITHOUT VALIDATION, ALGORITHM=INPLACE; } --error 1845, 1846 ALTER TABLE t1 ADD COLUMN b SMALLINT AS (a) VIRTUAL, WITH VALIDATION, ALGORITHM=INPLACE, LOCK=NONE; --error 1845, 1846 ALTER TABLE t1 ADD COLUMN c SMALLINT AS (a) VIRTUAL, WITH VALIDATION, ALGORITHM=INPLACE, LOCK=SHARED; --error 1845, 1846 ALTER TABLE t1 ADD COLUMN d SMALLINT AS (a) VIRTUAL, WITH VALIDATION, ALGORITHM=INPLACE, LOCK=EXCLUSIVE; --echo Shouldn't fail on Innodb if ($myisam_engine) { --error 1845 ALTER TABLE t1 ADD COLUMN e SMALLINT AS (a) VIRTUAL, WITHOUT VALIDATION, ALGORITHM=INPLACE, LOCK=NONE; --echo Shouldn't fail on Innodb --error 1845 ALTER TABLE t1 ADD COLUMN f SMALLINT AS (a) VIRTUAL, WITHOUT VALIDATION, ALGORITHM=INPLACE, LOCK=SHARED; --echo Shouldn't fail on Innodb --error 1845 ALTER TABLE t1 ADD COLUMN g SMALLINT AS (a) VIRTUAL, WITHOUT VALIDATION, ALGORITHM=INPLACE, LOCK=EXCLUSIVE; } if ($innodb_engine) { ALTER TABLE t1 ADD COLUMN e SMALLINT AS (a) VIRTUAL, WITHOUT VALIDATION, ALGORITHM=INPLACE, LOCK=NONE; --echo Shouldn't fail on Innodb ALTER TABLE t1 ADD COLUMN f SMALLINT AS (a) VIRTUAL, WITHOUT VALIDATION, ALGORITHM=INPLACE, LOCK=SHARED; --echo Shouldn't fail on Innodb ALTER TABLE t1 ADD COLUMN g SMALLINT AS (a) VIRTUAL, WITHOUT VALIDATION, ALGORITHM=INPLACE, LOCK=EXCLUSIVE; } DROP TABLE t1; --echo # --echo # Bug#21980430 GCOLS: CRASHING --echo # CREATE TABLE t ( a INT, b BLOB, c BLOB GENERATED ALWAYS AS (a+b) VIRTUAL, UNIQUE KEY i0008 (a) ); INSERT INTO t(a,b) VALUES(1,'cccc'); let $query= SELECT /*+ bka() */ 1 AS c FROM t AS b RIGHT JOIN t AS c ON b.a > c.c WHERE b.b>c.a; eval EXPLAIN $query; eval $query; DROP TABLE t; # Force DS-MRR to be used set @optimizer_switch_save = @@optimizer_switch; set optimizer_switch='mrr_cost_based=off'; # Reduce the size of the DS-MRR sort buffer to force multiple rounds set @read_rnd_buffer_size_save= @@read_rnd_buffer_size; set read_rnd_buffer_size=32; CREATE TABLE t0 ( i1 INTEGER NOT NULL ); INSERT INTO t0 VALUES (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); CREATE TABLE t1 ( pk INTEGER NOT NULL, i1 INTEGER NOT NULL, i2 INTEGER NOT NULL, v1 INTEGER GENERATED ALWAYS AS (i2 + 1) VIRTUAL, v2 INTEGER GENERATED ALWAYS AS (i1 / (i1 - i2 + 57)) VIRTUAL, PRIMARY KEY (pk), INDEX idx(i1) ); INSERT INTO t1 (pk, i1, i2) SELECT a0.i1 + a1.i1*10 + a2.i1*100, a0.i1 + a1.i1*10, a0.i1 + a1.i1*10 FROM t0 AS a0, t0 AS a1, t0 AS a2; # Do a DS-MRR scan on an index on a non-generated column # (this caused Division by 0 errors to be reported). let query1= SELECT * FROM t1 WHERE i1 > 41 AND i1 <= 43; eval EXPLAIN $query1; --sorted_result eval $query1; if ($support_virtual_index) { ALTER TABLE t1 ADD INDEX idx2(v1); } # Do a DS-MRR scan on an index on a virtual column # (this query returned too few records). let query2= SELECT * FROM t1 WHERE v1 > 41 AND v1 <= 43; eval EXPLAIN $query2; --sorted_result eval $query2; DROP TABLE t0, t1; # Restore defaults set optimizer_switch= @optimizer_switch_save; set @@read_rnd_buffer_size= @read_rnd_buffer_size_save; --echo # --echo # Bug#21872184 CONDITIONAL JUMP AT JOIN_CACHE::WRITE_RECORD_DATA IN --echo # SQL_JOIN_BUFFER.CC --echo # --echo # --echo # Test 1: Dynamic range scan with one covering index --echo # # This is the original test case which produces the valgrind error when # inserting data into the join buffer. The test failure only occurs with # InnoDB since it is only InnoDB that currently supports indexes on # virtual columns and is the only storage engine that includes the # primary key in each secondary key. CREATE TABLE t1 ( i1 INTEGER NOT NULL, c1 VARCHAR(1) NOT NULL ); INSERT INTO t1 VALUES (10, 'c'), (10, 'i'), (2, 't'), (4, 'g'); CREATE TABLE t2 ( i1 INTEGER NOT NULL, c1 VARCHAR(1) NOT NULL ); INSERT INTO t2 VALUES (2, 'k'), (9, 'k'), (7, 'o'), (5, 'n'), (7, 'e'); CREATE TABLE t3 ( pk INTEGER NOT NULL, i1 INTEGER, i2_key INTEGER GENERATED ALWAYS AS (i1 + i1) VIRTUAL NOT NULL, PRIMARY KEY (pk) ); if ($support_virtual_index) { --echo # Add a covering index. The reason for this index being covering is that --echo # secondary indexes in InnoDB include the primary key. ALTER TABLE t3 ADD INDEX v_idx (i2_key); } INSERT INTO t3 (pk, i1) VALUES (1, 1), (2, 48), (3, 228), (4, 3), (5, 5), (6, 39), (7, 6), (8, 8), (9, 3); CREATE TABLE t4 ( i1 INTEGER NOT NULL, c1 VARCHAR(1) NOT NULL ); INSERT INTO t4 VALUES (1, 'j'), (2, 'c'), (0, 'a'); ANALYZE TABLE t1, t2, t3, t4; # Hint is added to avoid materialization of the subquery let query= SELECT /*+ NO_SEMIJOIN(@subq1) */ t1.c1, t2.i1 FROM t1 STRAIGHT_JOIN t3 STRAIGHT_JOIN t2 WHERE ( t3.pk IN ( SELECT /*+ QB_NAME(subq1) */ t4.i1 FROM t4 WHERE t4.c1 < 'o' ) ) AND t1.i1 <= t3.i2_key; eval EXPLAIN $query; --sorted_result eval $query; --echo # --echo # Test 2: Two alternative covering indexes for the range scan --echo # # Adding second covering index if ($support_virtual_index) { ALTER TABLE t3 ADD INDEX v_idx2 (i2_key, i1); } # Hint is added to avoid materialization of the subquery let query= SELECT /*+ NO_SEMIJOIN(@subq1) */ t1.c1, t2.i1 FROM t1 STRAIGHT_JOIN t3 STRAIGHT_JOIN t2 WHERE ( t3.pk IN ( SELECT /*+ QB_NAME(subq1) */ t4.i1 FROM t4 WHERE t4.c1 < 'o' ) ) AND t1.i1 <= t3.i2_key; eval EXPLAIN $query; --sorted_result eval $query; --echo # --echo # Test 3: One covering index including the base column for the virtual --echo # column --echo # if ($support_virtual_index) { --echo # Drop the index with only the virtual column ALTER TABLE t3 DROP INDEX v_idx; } # Hint is added to avoid materialization of the subquery let query= SELECT /*+ NO_SEMIJOIN(@subq1) */ t1.c1, t2.i1 FROM t1 STRAIGHT_JOIN t3 STRAIGHT_JOIN t2 WHERE ( t3.pk IN ( SELECT /*+ QB_NAME(subq1) */ t4.i1 FROM t4 WHERE t4.c1 < 'o' ) ) AND t1.i1 <= t3.i2_key; eval EXPLAIN $query; --sorted_result eval $query; --echo # --echo # Test 4: One non-covering index --echo # if ($support_virtual_index) { --echo # Drop the index on two columns, add index on just one virtual column ALTER TABLE t3 DROP INDEX v_idx2; ALTER TABLE t3 ADD INDEX v_idx (i2_key); } --echo # Add more data to the table so that it will run the dynamic range scan --echo # as both table scan and range scan (the purpose of this is to make the --echo # table scan more expensive). INSERT INTO t3 (pk, i1) VALUES (10,1), (11,1), (12,1), (13,1), (14,1),(15,1), (16,1),(17,1), (18,1), (19,1), (20,1), (21,1), (22,1), (23,1), (24,1),(25,1),(26,1),(27,1), (28,1), (29,1); --echo # Change the query to read an extra column (t3.i1) making the index --echo # non-covering. # Hint is added to avoid materialization of the subquery let query= SELECT /*+ NO_SEMIJOIN(@subq1) */ t1.c1, t2.i1, t3.i1 FROM t1 STRAIGHT_JOIN t3 STRAIGHT_JOIN t2 WHERE ( t3.pk IN ( SELECT /*+ QB_NAME(subq1) */ t4.i1 FROM t4 WHERE t4.c1 < 'o' ) ) AND t1.i1 <= t3.i2_key; eval EXPLAIN $query; --sorted_result eval $query; --echo # --echo # Test 5: Test where the added primary key to secondary indexes is --echo # used after it has been included in the join buffer --echo # # This test is only relevant for storage engines that add the primary key # to all secondary keys (e.g. InnoDB). For these engines, the fields in the # primary key might be included when deciding that a secondary index is # covering for the query. This is the case for most of the secondary indexes # on t3 in this test. But in the above queries, the subquery is non-dependent # and the "t3.pk IN .." will be evaluated after rows for t3 are read. At this # time t3.pk is in the record buffer. t3.pk is not used after it has been # inserted into the join buffer. To test that t3.pk is actually correctly # included in the join buffer we change the subquery to be dependent and # only evaluated after the join has been done. # The purpose of this test is to ensure that we correctly handle and # include primary key fields that are added to a covering secondary index. # The difference between this query and the query in test 1 is that # an extra query condition is added to the subquery. # Hint is added to avoid materialization of the subquery let query= SELECT /*+ NO_SEMIJOIN(@subq1) */ t1.c1, t2.i1 FROM t1 STRAIGHT_JOIN t3 STRAIGHT_JOIN t2 WHERE ( t3.pk IN ( SELECT /*+ QB_NAME(subq1) */ t4.i1 FROM t4 WHERE t4.c1 < 'o' and t4.i1 < (t2.i1 + 1) ) ) AND t1.i1 <= t3.i2_key; eval EXPLAIN $query; --sorted_result eval $query; DROP TABLE t1, t2, t3, t4;
Close