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d20a96f9c1
In MariaDB, we have a confusing problem where: * The transaction_isolation option can be set in a configuration file, but it cannot be set dynamically. * The tx_isolation system variable can be set dynamically, but it cannot be set in a configuration file. Therefore, we have two different names for the same thing in different contexts. This is needlessly confusing, and it complicates the documentation. The same thing applys for transaction_read_only. MySQL 5.7 solved this problem by making them into system variables. https://dev.mysql.com/doc/relnotes/mysql/5.7/en/news-5-7-20.html This commit takes a similar approach by adding new system variables and marking the original ones as deprecated. This commit also resolves some legacy problems related to SET STATEMENT and transaction_isolation.
47 lines
945 B
Text
47 lines
945 B
Text
--source include/have_innodb.inc
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# Bug #49164 READ-COMMITTED reports "matched: 0" on compound PK
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# a duplicate of
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# Bug #52663 Lost update incrementing column value under READ COMMITTED
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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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SET transaction_isolation = 'READ-COMMITTED';
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CREATE TABLE bug49164 (a INT, b BIGINT, c TINYINT, PRIMARY KEY (a, b))
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ENGINE=InnoDB;
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insert into bug49164 values (1,1,1), (2,2,2), (3,3,3);
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begin;
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update bug49164 set c=7;
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select * from bug49164;
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rollback;
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select * from bug49164;
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begin;
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update bug49164 set c=7;
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connection con2;
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SET transaction_isolation = 'READ-COMMITTED';
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begin;
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select * from bug49164;
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commit;
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begin;
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--send
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update bug49164 set c=6 where a=1 and b=1;
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connection con1;
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rollback;
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select * from bug49164;
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connection con2;
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reap;
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commit;
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connection con1;
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select * from bug49164;
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connection default;
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disconnect con1;
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disconnect con2;
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drop table bug49164;
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