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This feature allows a query execution to fallback to the server, in case query execution using the select_handler (SH) fails. In case of fallback, a warning message containing the original reason for query failure using SH is generated. To accomplish this task, SH execution is moved to an earlier step when we create the SH in create_columnstore_select_handler(), instead of the previous call to SH execution in ha_columnstore_select_handler::init_scan(). This requires some pre-requisite steps that occur in the server in JOIN::optimize() and JOIN::exec() to be performed before starting SH execution. In addition, missing test cases from MCOL-424 are also added to the MTR suite, and the corresponding fix using disable_indices_for_CEJ() is reverted back since the original fix now appears to be redundant.
63 lines
1.9 KiB
Plaintext
63 lines
1.9 KiB
Plaintext
--source ../include/have_columnstore.inc
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--echo # MCOL-424
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--echo # Cross engine subquery losing where clause causing incorrect results
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if (!$MASTER_MYPORT)
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{
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# Running with --extern
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let $MASTER_MYPORT=`SELECT @@port`;
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}
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--disable_warnings
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DROP DATABASE IF EXISTS mcol424;
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--enable_warnings
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CREATE DATABASE mcol424;
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USE mcol424;
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#
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# Enable cross engine join
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# Configure user and password in Columnstore.xml file
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#
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--exec $MCS_MCSSETCONFIG CrossEngineSupport User 'cejuser'
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--exec $MCS_MCSSETCONFIG CrossEngineSupport Password 'Vagrant1|0000001'
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--exec $MCS_MCSSETCONFIG CrossEngineSupport Port $MASTER_MYPORT
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#
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# Create corresponding in the server
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#
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--disable_warnings
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CREATE USER IF NOT EXISTS'cejuser'@'localhost' IDENTIFIED BY 'Vagrant1|0000001';
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--enable_warnings
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GRANT ALL PRIVILEGES ON *.* TO 'cejuser'@'localhost';
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FLUSH PRIVILEGES;
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CREATE TABLE `trans_test` (
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`id` int(11) DEFAULT NULL,
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`member_id` int(11) DEFAULT NULL,
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`name` varchar(50) DEFAULT NULL
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) ENGINE=Columnstore DEFAULT CHARSET=latin1;
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insert into `trans_test`(`id`,`member_id`,`name`) values (1,1,'trans 1');
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insert into `trans_test`(`id`,`member_id`,`name`) values (2,2,'trans 2');
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insert into `trans_test`(`id`,`member_id`,`name`) values (3,1,'trans 3');
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insert into `trans_test`(`id`,`member_id`,`name`) values (4,2,'trans 4');
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insert into `trans_test`(`id`,`member_id`,`name`) values (5,1,'trans 5');
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CREATE TABLE `member_test` (
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`id` int(11) NOT NULL AUTO_INCREMENT,
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`name` varchar(50) NOT NULL,
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PRIMARY KEY (`id`)
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) ENGINE=MyISAM DEFAULT CHARSET=latin1;
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insert into `member_test`(`id`,`name`) values (1,'member 1');
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insert into `member_test`(`id`,`name`) values (2,'member 2');
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insert into `member_test`(`id`,`name`) values (3,'member 3');
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SELECT * FROM trans_test t WHERE t.`member_id` IN (SELECT id FROM member_test WHERE id =1);
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# Clean UP
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DROP USER 'cejuser'@'localhost';
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DROP DATABASE mcol424;
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