mirror of
https://github.com/MariaDB/server.git
synced 2025-07-29 05:21:33 +03:00
Merge gleb.loc:/home/uchum/work/bk/5.0-opt
into gleb.loc:/home/uchum/work/bk/5.1-opt
This commit is contained in:
@ -814,6 +814,91 @@ create table t1 (a int) engine=innodb;
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alter table t1 alter a set default 1;
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drop table t1;
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#
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# Bug #28591: MySQL need not sort the records in case of ORDER BY
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# primary_key on InnoDB table
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#
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CREATE TABLE t1 (a int, b int, PRIMARY KEY (a), KEY bkey (b)) ENGINE=InnoDB;
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INSERT INTO t1 VALUES (1,2),(3,2),(2,2),(4,2),(5,2),(6,2),(7,2),(8,2);
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INSERT INTO t1 SELECT a + 8, 2 FROM t1;
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INSERT INTO t1 SELECT a + 16, 1 FROM t1;
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query_vertical EXPLAIN SELECT * FROM t1 WHERE b=2 ORDER BY a;
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SELECT * FROM t1 WHERE b=2 ORDER BY a;
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query_vertical EXPLAIN SELECT * FROM t1 WHERE b BETWEEN 1 AND 2 ORDER BY a;
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SELECT * FROM t1 WHERE b BETWEEN 1 AND 2 ORDER BY a;
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query_vertical EXPLAIN SELECT * FROM t1 WHERE b BETWEEN 1 AND 2 ORDER BY b,a;
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SELECT * FROM t1 WHERE b BETWEEN 1 AND 2 ORDER BY b,a;
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CREATE TABLE t2 (a int, b int, c int, PRIMARY KEY (a), KEY bkey (b,c))
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ENGINE=InnoDB;
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INSERT INTO t2 VALUES (1,1,1),(3,1,1),(2,1,1),(4,1,1);
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INSERT INTO t2 SELECT a + 4, 1, 1 FROM t2;
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INSERT INTO t2 SELECT a + 8, 1, 1 FROM t2;
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query_vertical EXPLAIN SELECT * FROM t2 WHERE b=1 ORDER BY a;
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SELECT * FROM t2 WHERE b=1 ORDER BY a;
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query_vertical EXPLAIN SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY a;
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SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY a;
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query_vertical EXPLAIN SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY b,c,a;
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SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY b,c,a;
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query_vertical EXPLAIN SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY c,a;
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SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY c,a;
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DROP TABLE t1,t2;
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#
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# Bug #29644: alter table hangs if records locked in share mode by long
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# running transaction
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#
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CREATE TABLE t1 (a INT, PRIMARY KEY (a)) ENGINE=InnoDB;
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INSERT INTO t1 VALUES (1),(2),(3),(4),(5),(6),(7),(8);
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INSERT INTO t1 SELECT a + 8 FROM t1;
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INSERT INTO t1 SELECT a + 16 FROM t1;
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DELIMITER |;
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CREATE PROCEDURE p1 ()
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BEGIN
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DECLARE i INT DEFAULT 50;
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DECLARE cnt INT;
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START TRANSACTION;
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ALTER TABLE t1 ENGINE=InnoDB;
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COMMIT;
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START TRANSACTION;
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WHILE (i > 0) DO
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SET i = i - 1;
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SELECT COUNT(*) INTO cnt FROM t1 LOCK IN SHARE MODE;
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END WHILE;
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COMMIT;
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END;|
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DELIMITER ;|
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CONNECT (con1,localhost,root,,);
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CONNECT (con2,localhost,root,,);
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CONNECTION con1;
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SEND CALL p1();
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CONNECTION con2;
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SEND CALL p1();
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CONNECTION default;
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CALL p1();
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CONNECTION con1;
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REAP;
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CONNECTION con2;
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REAP;
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CONNECTION default;
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DISCONNECT con1;
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DISCONNECT con2;
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DROP PROCEDURE p1;
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DROP TABLE t1;
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--echo End of 5.0 tests
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@ -1516,6 +1516,19 @@ t1 CREATE TABLE `t1` (
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`c17` int(11) DEFAULT NULL
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) ENGINE=MyISAM DEFAULT CHARSET=latin1
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drop table t1;
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create table t1(f1 int,f2 int);
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insert into t1 value(1,1),(1,2),(1,3),(2,1),(2,2),(2,3);
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flush status;
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create table t2 select sql_big_result f1,count(f2) from t1 group by f1;
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show status like 'handler_read%';
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Variable_name Value
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Handler_read_first 0
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Handler_read_key 0
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Handler_read_next 0
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Handler_read_prev 0
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Handler_read_rnd 0
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Handler_read_rnd_next 7
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drop table t1,t2;
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End of 5.0 tests
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CREATE TABLE t1 (a int, b int);
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insert into t1 values (1,1),(1,2);
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|
@ -158,6 +158,25 @@ EXPLAIN SELECT 0 AS x, a FROM t1 GROUP BY x,a HAVING x=1 AND a > 1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible HAVING
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DROP table t1;
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CREATE TABLE t1 (a int PRIMARY KEY);
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CREATE TABLE t2 (b int PRIMARY KEY, a int);
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CREATE TABLE t3 (b int, flag int);
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INSERT INTO t1 VALUES (1);
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INSERT INTO t2 VALUES (1,1), (2,1), (3,1);
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INSERT INTO t3(b,flag) VALUES (2, 1);
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SELECT t1.a
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FROM t1 INNER JOIN t2 ON t1.a=t2.a LEFT JOIN t3 ON t2.b=t3.b
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GROUP BY t1.a, t2.b HAVING MAX(t3.flag)=0;
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a
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SELECT DISTINCT t1.a, MAX(t3.flag)
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FROM t1 INNER JOIN t2 ON t1.a=t2.a LEFT JOIN t3 ON t2.b=t3.b
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GROUP BY t1.a, t2.b HAVING MAX(t3.flag)=0;
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a MAX(t3.flag)
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SELECT DISTINCT t1.a
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FROM t1 INNER JOIN t2 ON t1.a=t2.a LEFT JOIN t3 ON t2.b=t3.b
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GROUP BY t1.a, t2.b HAVING MAX(t3.flag)=0;
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a
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DROP TABLE t1,t2,t3;
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create table t1 (col1 int, col2 varchar(5), col_t1 int);
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create table t2 (col1 int, col2 varchar(5), col_t2 int);
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create table t3 (col1 int, col2 varchar(5), col_t3 int);
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|
@ -814,6 +814,274 @@ drop table if exists t1;
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create table t1 (a int) engine=innodb;
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alter table t1 alter a set default 1;
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drop table t1;
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CREATE TABLE t1 (a int, b int, PRIMARY KEY (a), KEY bkey (b)) ENGINE=InnoDB;
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INSERT INTO t1 VALUES (1,2),(3,2),(2,2),(4,2),(5,2),(6,2),(7,2),(8,2);
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INSERT INTO t1 SELECT a + 8, 2 FROM t1;
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INSERT INTO t1 SELECT a + 16, 1 FROM t1;
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EXPLAIN SELECT * FROM t1 WHERE b=2 ORDER BY a;
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id 1
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select_type SIMPLE
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table t1
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type ref
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possible_keys bkey
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key bkey
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key_len 5
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ref const
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rows 16
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Extra Using where; Using index
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SELECT * FROM t1 WHERE b=2 ORDER BY a;
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a b
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1 2
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2 2
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3 2
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4 2
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5 2
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6 2
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7 2
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8 2
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9 2
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10 2
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11 2
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12 2
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13 2
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14 2
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15 2
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16 2
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EXPLAIN SELECT * FROM t1 WHERE b BETWEEN 1 AND 2 ORDER BY a;
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id 1
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select_type SIMPLE
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table t1
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type range
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possible_keys bkey
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key bkey
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key_len 5
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ref NULL
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rows 16
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Extra Using where; Using index; Using filesort
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SELECT * FROM t1 WHERE b BETWEEN 1 AND 2 ORDER BY a;
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a b
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1 2
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2 2
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3 2
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4 2
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5 2
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6 2
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7 2
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8 2
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9 2
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10 2
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11 2
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12 2
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13 2
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14 2
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15 2
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16 2
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17 1
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18 1
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19 1
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20 1
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21 1
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22 1
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23 1
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24 1
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25 1
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26 1
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27 1
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28 1
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29 1
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30 1
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31 1
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32 1
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EXPLAIN SELECT * FROM t1 WHERE b BETWEEN 1 AND 2 ORDER BY b,a;
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id 1
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select_type SIMPLE
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table t1
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type range
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possible_keys bkey
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key bkey
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key_len 5
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ref NULL
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rows 16
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Extra Using where; Using index
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SELECT * FROM t1 WHERE b BETWEEN 1 AND 2 ORDER BY b,a;
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a b
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17 1
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18 1
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19 1
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20 1
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21 1
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22 1
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23 1
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||||
24 1
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25 1
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26 1
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27 1
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28 1
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29 1
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30 1
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31 1
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32 1
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1 2
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2 2
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3 2
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4 2
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5 2
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6 2
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7 2
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8 2
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9 2
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10 2
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11 2
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12 2
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13 2
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14 2
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15 2
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16 2
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CREATE TABLE t2 (a int, b int, c int, PRIMARY KEY (a), KEY bkey (b,c))
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ENGINE=InnoDB;
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INSERT INTO t2 VALUES (1,1,1),(3,1,1),(2,1,1),(4,1,1);
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INSERT INTO t2 SELECT a + 4, 1, 1 FROM t2;
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INSERT INTO t2 SELECT a + 8, 1, 1 FROM t2;
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EXPLAIN SELECT * FROM t2 WHERE b=1 ORDER BY a;
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id 1
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select_type SIMPLE
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table t2
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type ref
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possible_keys bkey
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key bkey
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key_len 5
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ref const
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rows 8
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Extra Using where; Using index; Using filesort
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SELECT * FROM t2 WHERE b=1 ORDER BY a;
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a b c
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1 1 1
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2 1 1
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3 1 1
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4 1 1
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5 1 1
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6 1 1
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7 1 1
|
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8 1 1
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9 1 1
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||||
10 1 1
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||||
11 1 1
|
||||
12 1 1
|
||||
13 1 1
|
||||
14 1 1
|
||||
15 1 1
|
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16 1 1
|
||||
EXPLAIN SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY a;
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id 1
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select_type SIMPLE
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||||
table t2
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type ref
|
||||
possible_keys bkey
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||||
key bkey
|
||||
key_len 10
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||||
ref const,const
|
||||
rows 8
|
||||
Extra Using where; Using index
|
||||
SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY a;
|
||||
a b c
|
||||
1 1 1
|
||||
2 1 1
|
||||
3 1 1
|
||||
4 1 1
|
||||
5 1 1
|
||||
6 1 1
|
||||
7 1 1
|
||||
8 1 1
|
||||
9 1 1
|
||||
10 1 1
|
||||
11 1 1
|
||||
12 1 1
|
||||
13 1 1
|
||||
14 1 1
|
||||
15 1 1
|
||||
16 1 1
|
||||
EXPLAIN SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY b,c,a;
|
||||
id 1
|
||||
select_type SIMPLE
|
||||
table t2
|
||||
type ref
|
||||
possible_keys bkey
|
||||
key bkey
|
||||
key_len 10
|
||||
ref const,const
|
||||
rows 8
|
||||
Extra Using where; Using index
|
||||
SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY b,c,a;
|
||||
a b c
|
||||
1 1 1
|
||||
2 1 1
|
||||
3 1 1
|
||||
4 1 1
|
||||
5 1 1
|
||||
6 1 1
|
||||
7 1 1
|
||||
8 1 1
|
||||
9 1 1
|
||||
10 1 1
|
||||
11 1 1
|
||||
12 1 1
|
||||
13 1 1
|
||||
14 1 1
|
||||
15 1 1
|
||||
16 1 1
|
||||
EXPLAIN SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY c,a;
|
||||
id 1
|
||||
select_type SIMPLE
|
||||
table t2
|
||||
type ref
|
||||
possible_keys bkey
|
||||
key bkey
|
||||
key_len 10
|
||||
ref const,const
|
||||
rows 8
|
||||
Extra Using where; Using index
|
||||
SELECT * FROM t2 WHERE b=1 AND c=1 ORDER BY c,a;
|
||||
a b c
|
||||
1 1 1
|
||||
2 1 1
|
||||
3 1 1
|
||||
4 1 1
|
||||
5 1 1
|
||||
6 1 1
|
||||
7 1 1
|
||||
8 1 1
|
||||
9 1 1
|
||||
10 1 1
|
||||
11 1 1
|
||||
12 1 1
|
||||
13 1 1
|
||||
14 1 1
|
||||
15 1 1
|
||||
16 1 1
|
||||
DROP TABLE t1,t2;
|
||||
CREATE TABLE t1 (a INT, PRIMARY KEY (a)) ENGINE=InnoDB;
|
||||
INSERT INTO t1 VALUES (1),(2),(3),(4),(5),(6),(7),(8);
|
||||
INSERT INTO t1 SELECT a + 8 FROM t1;
|
||||
INSERT INTO t1 SELECT a + 16 FROM t1;
|
||||
CREATE PROCEDURE p1 ()
|
||||
BEGIN
|
||||
DECLARE i INT DEFAULT 50;
|
||||
DECLARE cnt INT;
|
||||
START TRANSACTION;
|
||||
ALTER TABLE t1 ENGINE=InnoDB;
|
||||
COMMIT;
|
||||
START TRANSACTION;
|
||||
WHILE (i > 0) DO
|
||||
SET i = i - 1;
|
||||
SELECT COUNT(*) INTO cnt FROM t1 LOCK IN SHARE MODE;
|
||||
END WHILE;
|
||||
COMMIT;
|
||||
END;|
|
||||
CALL p1();
|
||||
CALL p1();
|
||||
CALL p1();
|
||||
DROP PROCEDURE p1;
|
||||
DROP TABLE t1;
|
||||
End of 5.0 tests
|
||||
CREATE TABLE `t2` (
|
||||
`k` int(11) NOT NULL auto_increment,
|
||||
|
@ -1829,4 +1829,28 @@ c1 + 0
|
||||
2
|
||||
0
|
||||
2
|
||||
DROP TABLE t1,t2;
|
||||
CREATE TABLE t1(a enum('a','b','c','d'));
|
||||
INSERT INTO t1 VALUES (4),(1),(0),(3);
|
||||
Warnings:
|
||||
Warning 1265 Data truncated for column 'a' at row 3
|
||||
SELECT a FROM t1;
|
||||
a
|
||||
d
|
||||
a
|
||||
|
||||
c
|
||||
EXPLAIN SELECT a FROM t1 WHERE a=0;
|
||||
id select_type table type possible_keys key key_len ref rows Extra
|
||||
1 SIMPLE t1 ALL NULL NULL NULL NULL 4 Using where
|
||||
SELECT a FROM t1 WHERE a=0;
|
||||
a
|
||||
|
||||
ALTER TABLE t1 ADD PRIMARY KEY (a);
|
||||
EXPLAIN SELECT a FROM t1 WHERE a=0;
|
||||
id select_type table type possible_keys key key_len ref rows Extra
|
||||
1 SIMPLE t1 const PRIMARY PRIMARY 1 const 1 Using index
|
||||
SELECT a FROM t1 WHERE a=0;
|
||||
a
|
||||
|
||||
DROP TABLE t1;
|
||||
|
@ -1123,6 +1123,16 @@ show create table t1;
|
||||
drop table t1;
|
||||
|
||||
|
||||
#
|
||||
# Bug#15130:CREATE .. SELECT was denied to use advantages of the SQL_BIG_RESULT.
|
||||
#
|
||||
create table t1(f1 int,f2 int);
|
||||
insert into t1 value(1,1),(1,2),(1,3),(2,1),(2,2),(2,3);
|
||||
flush status;
|
||||
create table t2 select sql_big_result f1,count(f2) from t1 group by f1;
|
||||
show status like 'handler_read%';
|
||||
drop table t1,t2;
|
||||
|
||||
--echo End of 5.0 tests
|
||||
|
||||
#
|
||||
|
@ -151,6 +151,32 @@ EXPLAIN SELECT 0 AS x, a FROM t1 GROUP BY x,a HAVING x=1 AND a > 1;
|
||||
|
||||
DROP table t1;
|
||||
|
||||
#
|
||||
# Bug #29911: HAVING clause depending on constant table and evaluated to false
|
||||
#
|
||||
|
||||
CREATE TABLE t1 (a int PRIMARY KEY);
|
||||
CREATE TABLE t2 (b int PRIMARY KEY, a int);
|
||||
CREATE TABLE t3 (b int, flag int);
|
||||
|
||||
INSERT INTO t1 VALUES (1);
|
||||
INSERT INTO t2 VALUES (1,1), (2,1), (3,1);
|
||||
INSERT INTO t3(b,flag) VALUES (2, 1);
|
||||
|
||||
SELECT t1.a
|
||||
FROM t1 INNER JOIN t2 ON t1.a=t2.a LEFT JOIN t3 ON t2.b=t3.b
|
||||
GROUP BY t1.a, t2.b HAVING MAX(t3.flag)=0;
|
||||
|
||||
SELECT DISTINCT t1.a, MAX(t3.flag)
|
||||
FROM t1 INNER JOIN t2 ON t1.a=t2.a LEFT JOIN t3 ON t2.b=t3.b
|
||||
GROUP BY t1.a, t2.b HAVING MAX(t3.flag)=0;
|
||||
|
||||
SELECT DISTINCT t1.a
|
||||
FROM t1 INNER JOIN t2 ON t1.a=t2.a LEFT JOIN t3 ON t2.b=t3.b
|
||||
GROUP BY t1.a, t2.b HAVING MAX(t3.flag)=0;
|
||||
|
||||
DROP TABLE t1,t2,t3;
|
||||
|
||||
# End of 4.1 tests
|
||||
|
||||
#
|
||||
|
@ -200,4 +200,24 @@ CREATE TABLE t2 SELECT * FROM t1;
|
||||
CREATE TABLE t2 SELECT * FROM t1;
|
||||
SELECT c1 + 0 FROM t2;
|
||||
|
||||
DROP TABLE t1,t2;
|
||||
|
||||
#
|
||||
# Bug#29661: Lookup by 0 for a primary index over a enum type
|
||||
#
|
||||
|
||||
CREATE TABLE t1(a enum('a','b','c','d'));
|
||||
INSERT INTO t1 VALUES (4),(1),(0),(3);
|
||||
|
||||
SELECT a FROM t1;
|
||||
|
||||
EXPLAIN SELECT a FROM t1 WHERE a=0;
|
||||
SELECT a FROM t1 WHERE a=0;
|
||||
|
||||
ALTER TABLE t1 ADD PRIMARY KEY (a);
|
||||
|
||||
EXPLAIN SELECT a FROM t1 WHERE a=0;
|
||||
SELECT a FROM t1 WHERE a=0;
|
||||
|
||||
DROP TABLE t1;
|
||||
|
||||
|
@ -7901,8 +7901,11 @@ int Field_enum::store(longlong nr, bool unsigned_val)
|
||||
if ((ulonglong) nr > typelib->count || nr == 0)
|
||||
{
|
||||
set_warning(MYSQL_ERROR::WARN_LEVEL_WARN, WARN_DATA_TRUNCATED, 1);
|
||||
nr=0;
|
||||
error=1;
|
||||
if (nr != 0 || table->in_use->count_cuted_fields)
|
||||
{
|
||||
nr= 0;
|
||||
error= 1;
|
||||
}
|
||||
}
|
||||
store_type((ulonglong) (uint) nr);
|
||||
return error;
|
||||
|
@ -3797,13 +3797,6 @@ TABLE *open_ltable(THD *thd, TABLE_LIST *table_list, thr_lock_type lock_type)
|
||||
|
||||
if (table)
|
||||
{
|
||||
#if defined( __WIN__)
|
||||
/* Win32 can't drop a file that is open */
|
||||
if (lock_type == TL_WRITE_ALLOW_READ)
|
||||
{
|
||||
lock_type= TL_WRITE;
|
||||
}
|
||||
#endif /* __WIN__ */
|
||||
table_list->lock_type= lock_type;
|
||||
table_list->table= table;
|
||||
table->grant= table_list->grant;
|
||||
|
@ -12289,6 +12289,7 @@ static int test_if_order_by_key(ORDER *order, TABLE *table, uint idx,
|
||||
key_part_end=key_part+table->key_info[idx].key_parts;
|
||||
key_part_map const_key_parts=table->const_key_parts[idx];
|
||||
int reverse=0;
|
||||
my_bool on_primary_key= FALSE;
|
||||
DBUG_ENTER("test_if_order_by_key");
|
||||
|
||||
for (; order ; order=order->next, const_key_parts>>=1)
|
||||
@ -12303,7 +12304,31 @@ static int test_if_order_by_key(ORDER *order, TABLE *table, uint idx,
|
||||
for (; const_key_parts & 1 ; const_key_parts>>= 1)
|
||||
key_part++;
|
||||
|
||||
if (key_part == key_part_end || key_part->field != field)
|
||||
if (key_part == key_part_end)
|
||||
{
|
||||
/*
|
||||
We are at the end of the key. Check if the engine has the primary
|
||||
key as a suffix to the secondary keys. If it has continue to check
|
||||
the primary key as a suffix.
|
||||
*/
|
||||
if (!on_primary_key &&
|
||||
(table->file->table_flags() & HA_PRIMARY_KEY_IN_READ_INDEX) &&
|
||||
table->s->db_type == DB_TYPE_INNODB &&
|
||||
table->s->primary_key != MAX_KEY)
|
||||
{
|
||||
on_primary_key= TRUE;
|
||||
key_part= table->key_info[table->s->primary_key].key_part;
|
||||
key_part_end=key_part+table->key_info[table->s->primary_key].key_parts;
|
||||
const_key_parts=table->const_key_parts[table->s->primary_key];
|
||||
|
||||
for (; const_key_parts & 1 ; const_key_parts>>= 1)
|
||||
key_part++;
|
||||
}
|
||||
else
|
||||
DBUG_RETURN(0);
|
||||
}
|
||||
|
||||
if (key_part->field != field)
|
||||
DBUG_RETURN(0);
|
||||
|
||||
/* set flag to 1 if we can use read-next on key, else to -1 */
|
||||
@ -12314,7 +12339,8 @@ static int test_if_order_by_key(ORDER *order, TABLE *table, uint idx,
|
||||
reverse=flag; // Remember if reverse
|
||||
key_part++;
|
||||
}
|
||||
*used_key_parts= (uint) (key_part - table->key_info[idx].key_part);
|
||||
*used_key_parts= on_primary_key ? table->key_info[idx].key_parts :
|
||||
(uint) (key_part - table->key_info[idx].key_part);
|
||||
if (reverse == -1 && !(table->file->index_flags(idx, *used_key_parts-1, 1) &
|
||||
HA_READ_PREV))
|
||||
reverse= 0; // Index can't be used
|
||||
@ -13030,7 +13056,7 @@ remove_duplicates(JOIN *join, TABLE *entry,List<Item> &fields, Item *having)
|
||||
field_count++;
|
||||
}
|
||||
|
||||
if (!field_count && !(join->select_options & OPTION_FOUND_ROWS))
|
||||
if (!field_count && !(join->select_options & OPTION_FOUND_ROWS) && !having)
|
||||
{ // only const items with no OPTION_FOUND_ROWS
|
||||
join->unit->select_limit_cnt= 1; // Only send first row
|
||||
DBUG_RETURN(0);
|
||||
|
@ -1349,7 +1349,12 @@ static int open_binary_frm(THD *thd, TABLE_SHARE *share, uchar *head,
|
||||
the primary key, then we can use any key to find this column
|
||||
*/
|
||||
if (ha_option & HA_PRIMARY_KEY_IN_READ_INDEX)
|
||||
{
|
||||
field->part_of_key= share->keys_in_use;
|
||||
if (share->db_type == DB_TYPE_INNODB &&
|
||||
field->part_of_sortkey.is_set(key))
|
||||
field->part_of_sortkey= share->keys_in_use;
|
||||
}
|
||||
}
|
||||
if (field->key_length() != key_part->length)
|
||||
{
|
||||
|
@ -7042,18 +7042,6 @@ ha_innobase::store_lock(
|
||||
&& !thd_tablespace_op(thd)
|
||||
&& sql_command != SQLCOM_TRUNCATE
|
||||
&& sql_command != SQLCOM_OPTIMIZE
|
||||
|
||||
#ifdef __WIN__
|
||||
/* For alter table on win32 for successful
|
||||
operation completion it is used TL_WRITE(=10) lock
|
||||
instead of TL_WRITE_ALLOW_READ(=6), however here
|
||||
in innodb handler TL_WRITE is lifted to
|
||||
TL_WRITE_ALLOW_WRITE, which causes race condition
|
||||
when several clients do alter table simultaneously
|
||||
(bug #17264). This fix avoids the problem. */
|
||||
&& sql_command != SQLCOM_ALTER_TABLE
|
||||
#endif
|
||||
|
||||
&& sql_command != SQLCOM_CREATE_TABLE) {
|
||||
|
||||
lock_type = TL_WRITE_ALLOW_WRITE;
|
||||
|
Reference in New Issue
Block a user