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96e092dc73
WL#2474 "Multi Range Read: Change the default MRR implementation to implement new MRR interface"
WL#2475 "Batched range read functions for MyISAM/InnoDb"
"Index condition pushdown for MyISAM/InnoDB"
Igor's fix from sp1r-igor@olga.mysql.com-20080330055902-07614:
There could be observed the following problems:
1. EXPLAIN did not mention pushdown conditions from on expressions in the
'extra' column. As a result if a query had no where conditions pushed
down to a table, but had on conditions pushed to this table the 'extra'
column in the EXPLAIN for the table missed 'using where'.
2. Conditions for ref access were not eliminated from on expressions
though such conditions were eliminated from the where condition.
101 lines
7.1 KiB
Plaintext
101 lines
7.1 KiB
Plaintext
CREATE TABLE `CC` (
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`pk` int(11) NOT NULL AUTO_INCREMENT,
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`int_key` int(11) DEFAULT NULL,
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`date_nokey` date DEFAULT NULL,
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`datetime_nokey` datetime DEFAULT NULL,
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PRIMARY KEY (`pk`),
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KEY `int_key` (`int_key`),
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KEY `varchar_key` (`int_key`)
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) ENGINE=MyISAM AUTO_INCREMENT=30 DEFAULT CHARSET=latin1;
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INSERT INTO `CC` VALUES (10,8,NULL,'2002-02-26 06:14:37'),(11,9,'2006-06-14','1900-01-01 00:00:00'),(12,9,'2002-09-12','2006-12-03 09:37:26'),(13,186,'2005-02-15','2008-05-26 12:27:10'),(14,NULL,NULL,'2004-12-14 16:37:30'),(15,2,'2008-11-04','2003-02-11 21:19:41'),(16,3,'2004-09-04','2009-10-18 02:27:49'),(17,0,'2006-06-05','2000-09-26 07:45:57'),(18,133,'1900-01-01',NULL),(19,1,'1900-01-01','2005-11-10 12:40:29'),(20,8,'1900-01-01','2009-04-25 00:00:00'),(21,5,'2005-01-13','2002-11-27 00:00:00'),(22,5,'2006-05-21','2004-01-26 20:32:32'),(23,8,'2003-09-08','2007-10-26 11:41:40'),(24,6,'2006-12-23','2005-10-07 00:00:00'),(25,51,'2006-10-15','2000-07-15 05:00:34'),(26,4,'2005-04-06','2000-04-03 16:33:32'),(27,7,'2008-04-07',NULL),(28,6,'2006-10-10','2001-04-25 01:26:12'),(29,4,'1900-01-01','2000-12-27 00:00:00');
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CREATE TABLE `C` (
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`pk` int(11) NOT NULL AUTO_INCREMENT,
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`int_key` int(11) DEFAULT NULL,
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`date_nokey` date DEFAULT NULL,
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`datetime_nokey` datetime DEFAULT NULL,
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PRIMARY KEY (`pk`),
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KEY `int_key` (`int_key`),
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KEY `varchar_key` (`int_key`)
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) ENGINE=MyISAM AUTO_INCREMENT=21 DEFAULT CHARSET=latin1;
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INSERT INTO `C` VALUES (1,2,NULL,'2004-10-11 18:13:16'),(2,9,'2001-09-19',NULL),(3,3,'2004-09-12','1900-01-01 00:00:00'),(4,9,NULL,'2009-07-25 00:00:00'),(5,NULL,'2002-07-19',NULL),(6,9,'2002-12-16','2008-07-27 00:00:00'),(7,3,'2006-02-08','2002-11-13 16:37:31'),(8,8,'2006-08-28','1900-01-01 00:00:00'),(9,8,'2001-04-14','2003-12-10 00:00:00'),(10,53,'2000-01-05','2001-12-21 22:38:22'),(11,0,'2003-12-06','2008-12-13 23:16:44'),(12,5,'1900-01-01','2005-08-15 12:39:41'),(13,166,'2002-11-27',NULL),(14,3,NULL,'2006-09-11 12:06:14'),(15,0,'2003-05-27','2007-12-15 12:39:34'),(16,1,'2005-05-03','2005-08-09 00:00:00'),(17,9,'2001-04-18','2001-09-02 22:50:02'),(18,5,'2005-12-27','2005-12-16 22:58:11'),(19,6,'2004-08-20','2007-04-19 00:19:53'),(20,2,'1900-01-01','1900-01-01 00:00:00');
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SELECT `pk`
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FROM C OUTR
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WHERE `pk` IN (
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SELECT `int_key`
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FROM CC
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WHERE `date_nokey` < `datetime_nokey` XOR OUTR .`date_nokey` ) ;
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pk
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9
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2
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5
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6
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SELECT `pk`
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FROM C
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WHERE `pk` IN (
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SELECT `int_key`
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FROM CC
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WHERE `date_nokey` < `datetime_nokey` XOR '2009-11-25' ) ;
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pk
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2
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4
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5
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6
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9
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Warnings:
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Warning 1292 Truncated incorrect INTEGER value: '2009-11-25'
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Warning 1292 Truncated incorrect INTEGER value: '2009-11-25'
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Warning 1292 Truncated incorrect INTEGER value: '2009-11-25'
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Warning 1292 Truncated incorrect INTEGER value: '2009-11-25'
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Warning 1292 Truncated incorrect INTEGER value: '2009-11-25'
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Warning 1292 Truncated incorrect INTEGER value: '2009-11-25'
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Warning 1292 Truncated incorrect INTEGER value: '2009-11-25'
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Warning 1292 Truncated incorrect INTEGER value: '2009-11-25'
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Warning 1292 Truncated incorrect INTEGER value: '2009-11-25'
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Warning 1292 Truncated incorrect INTEGER value: '2009-11-25'
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Warning 1292 Truncated incorrect INTEGER value: '2009-11-25'
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Warning 1292 Truncated incorrect INTEGER value: '2009-11-25'
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Warning 1292 Truncated incorrect INTEGER value: '2009-11-25'
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Warning 1292 Truncated incorrect INTEGER value: '2009-11-25'
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Warning 1292 Truncated incorrect INTEGER value: '2009-11-25'
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Warning 1292 Truncated incorrect INTEGER value: '2009-11-25'
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DROP TABLE CC;
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DROP TABLE C;
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CREATE TABLE `CC` (
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`pk` int(11) NOT NULL AUTO_INCREMENT,
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`int_nokey` int(11) DEFAULT NULL,
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`int_key` int(11) DEFAULT NULL,
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`date_nokey` date DEFAULT NULL,
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`datetime_key` datetime DEFAULT NULL,
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`datetime_nokey` datetime DEFAULT NULL,
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PRIMARY KEY (`pk`),
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KEY `int_key` (`int_key`),
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KEY `datetime_key` (`datetime_key`),
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KEY `varchar_key` (`int_key`)
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) ENGINE=MyISAM AUTO_INCREMENT=30 DEFAULT CHARSET=latin1;
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INSERT INTO `CC` VALUES (10,7,8,NULL,'2002-02-26 06:14:37','2002-02-26 06:14:37'),(11,1,9,'2006-06-14','1900-01-01 00:00:00','1900-01-01 00:00:00'),(12,5,9,'2002-09-12','2006-12-03 09:37:26','2006-12-03 09:37:26'),(13,3,186,'2005-02-15','2008-05-26 12:27:10','2008-05-26 12:27:10'),(14,6,NULL,NULL,'2004-12-14 16:37:30','2004-12-14 16:37:30'),(15,92,2,'2008-11-04','2003-02-11 21:19:41','2003-02-11 21:19:41'),(16,7,3,'2004-09-04','2009-10-18 02:27:49','2009-10-18 02:27:49'),(17,NULL,0,'2006-06-05','2000-09-26 07:45:57','2000-09-26 07:45:57'),(18,3,133,'1900-01-01',NULL,NULL),(19,5,1,'1900-01-01','2005-11-10 12:40:29','2005-11-10 12:40:29'),(20,1,8,'1900-01-01','2009-04-25 00:00:00','2009-04-25 00:00:00'),(21,2,5,'2005-01-13','2002-11-27 00:00:00','2002-11-27 00:00:00'),(22,NULL,5,'2006-05-21','2004-01-26 20:32:32','2004-01-26 20:32:32'),(23,1,8,'2003-09-08','2007-10-26 11:41:40','2007-10-26 11:41:40'),(24,0,6,'2006-12-23','2005-10-07 00:00:00','2005-10-07 00:00:00'),(25,210,51,'2006-10-15','2000-07-15 05:00:34','2000-07-15 05:00:34'),(26,8,4,'2005-04-06','2000-04-03 16:33:32','2000-04-03 16:33:32'),(27,7,7,'2008-04-07',NULL,NULL),(28,5,6,'2006-10-10','2001-04-25 01:26:12','2001-04-25 01:26:12'),(29,NULL,4,'1900-01-01','2000-12-27 00:00:00','2000-12-27 00:00:00');
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CREATE TABLE `C` (
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`pk` int(11) NOT NULL AUTO_INCREMENT,
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`int_nokey` int(11) DEFAULT NULL,
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`int_key` int(11) DEFAULT NULL,
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`date_nokey` date DEFAULT NULL,
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`datetime_key` datetime DEFAULT NULL,
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`datetime_nokey` datetime DEFAULT NULL,
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PRIMARY KEY (`pk`),
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KEY `int_key` (`int_key`),
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KEY `datetime_key` (`datetime_key`),
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KEY `varchar_key` (`int_key`)
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) ENGINE=MyISAM AUTO_INCREMENT=21 DEFAULT CHARSET=latin1;
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INSERT INTO `C` VALUES (1,NULL,2,NULL,'2004-10-11 18:13:16','2004-10-11 18:13:16'),(2,7,9,'2001-09-19',NULL,NULL),(3,9,3,'2004-09-12','1900-01-01 00:00:00','1900-01-01 00:00:00'),(4,7,9,NULL,'2009-07-25 00:00:00','2009-07-25 00:00:00'),(5,4,NULL,'2002-07-19',NULL,NULL),(6,2,9,'2002-12-16','2008-07-27 00:00:00','2008-07-27 00:00:00'),(7,6,3,'2006-02-08','2002-11-13 16:37:31','2002-11-13 16:37:31'),(8,8,8,'2006-08-28','1900-01-01 00:00:00','1900-01-01 00:00:00'),(9,NULL,8,'2001-04-14','2003-12-10 00:00:00','2003-12-10 00:00:00'),(10,5,53,'2000-01-05','2001-12-21 22:38:22','2001-12-21 22:38:22'),(11,NULL,0,'2003-12-06','2008-12-13 23:16:44','2008-12-13 23:16:44'),(12,6,5,'1900-01-01','2005-08-15 12:39:41','2005-08-15 12:39:41'),(13,188,166,'2002-11-27',NULL,NULL),(14,2,3,NULL,'2006-09-11 12:06:14','2006-09-11 12:06:14'),(15,1,0,'2003-05-27','2007-12-15 12:39:34','2007-12-15 12:39:34'),(16,1,1,'2005-05-03','2005-08-09 00:00:00','2005-08-09 00:00:00'),(17,0,9,'2001-04-18','2001-09-02 22:50:02','2001-09-02 22:50:02'),(18,9,5,'2005-12-27','2005-12-16 22:58:11','2005-12-16 22:58:11'),(19,NULL,6,'2004-08-20','2007-04-19 00:19:53','2007-04-19 00:19:53'),(20,4,2,'1900-01-01','1900-01-01 00:00:00','1900-01-01 00:00:00');
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SELECT OUTR . `pk` AS X
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FROM C AS OUTR
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WHERE OUTR . `pk` IN (
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SELECT INNR . `int_key` AS Y
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FROM CC AS INNR
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WHERE INNR . `date_nokey` < INNR . `datetime_nokey` XOR OUTR . `date_nokey` BETWEEN '2004-07-10' AND '2009-11-25'
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ORDER BY INNR . `int_nokey` ) AND ( OUTR . `datetime_key` BETWEEN '2000-05-25' AND '2004-08-07' OR OUTR . `datetime_nokey` = '2007-10-24' )
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ORDER BY OUTR . `int_key` , OUTR . `pk`;
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X
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9
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DROP TABLE CC;
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DROP TABLE C;
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