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Setting lowercase_table_names to 2 on Windows causing Foreign Key problems This problem was exposed by the fix for Bug#55222. There was a codepath in dict0load.c, dict_load_foreigns() that made sure the table name matched case sensitive in order to load a referenced table into the dictionary as needed. If an engine is rebooted which accesses a table with foreign keys, and lower_case_table_names=2, then the table with foreign keys will get an error when it is changed (insert/updated/delete). Once the referenced tables are loaded into the dictionary cache by a select statement on those tables, the same change would succeed because the affected code path would not get followed.
92 lines
2.5 KiB
Plaintext
Executable File
92 lines
2.5 KiB
Plaintext
Executable File
# Bug#60196 - Setting lowercase_table_names to 2 on Windows causing
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# Foreign Key problems after an engine is restarted.
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# This test case needs InnoDB.
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-- source include/have_innodb.inc
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#
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# Precautionary clean up.
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#
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--disable_warnings
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DROP TABLE IF EXISTS Bug_60196_FK1 ;
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DROP TABLE IF EXISTS Bug_60196_FK2 ;
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DROP TABLE IF EXISTS Bug_60196 ;
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--enable_warnings
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#
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# Create test data.
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#
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CREATE TABLE `Bug_60196_FK1` (Primary_Key INT PRIMARY KEY) ENGINE=InnoDB;
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CREATE TABLE `Bug_60196_FK2` (Primary_Key INT PRIMARY KEY) ENGINE=InnoDB;
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CREATE TABLE `Bug_60196` (
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FK1_Key INT NOT NULL,
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FK2_Key INT NOT NULL,
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PRIMARY KEY (FK2_Key, FK1_Key),
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KEY FK1_Key (FK1_Key),
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KEY FK2_Key (FK2_Key),
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CONSTRAINT FK_FK1 FOREIGN KEY (FK1_Key)
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REFERENCES Bug_60196_FK1 (Primary_Key)
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ON DELETE CASCADE
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ON UPDATE CASCADE,
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CONSTRAINT FK_FK2 FOREIGN KEY (FK2_Key)
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REFERENCES Bug_60196_FK2 (Primary_Key)
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ON DELETE CASCADE
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ON UPDATE CASCADE
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) ENGINE=InnoDB;
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INSERT INTO Bug_60196_FK1 VALUES (1), (2), (3), (4), (5);
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INSERT INTO Bug_60196_FK2 VALUES (1), (2), (3), (4), (5);
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INSERT INTO Bug_60196 VALUES (1, 1);
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INSERT INTO Bug_60196 VALUES (1, 2);
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INSERT INTO Bug_60196 VALUES (1, 3);
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--error ER_NO_REFERENCED_ROW_2
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INSERT INTO Bug_60196 VALUES (1, 99);
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--error ER_NO_REFERENCED_ROW_2
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INSERT INTO Bug_60196 VALUES (99, 1);
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SELECT * FROM bug_60196_FK1;
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SELECT * FROM bug_60196_FK2;
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SELECT * FROM bug_60196;
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--echo # Stop master server
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# Write file to make mysql-test-run.pl wait for the server to stop
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-- exec echo "wait" > $MYSQLTEST_VARDIR/tmp/mysqld.1.expect
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# Send a shutdown request to the server
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-- shutdown_server 10
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# Call script that will poll the server waiting for it to disapear
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-- source include/wait_until_disconnected.inc
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--echo # Restart server.
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# Write file to make mysql-test-run.pl start up the server again
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--exec echo "restart" > $MYSQLTEST_VARDIR/tmp/mysqld.1.expect
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# Turn on reconnect
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--enable_reconnect
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# Call script that will poll the server waiting for it to be back online again
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--source include/wait_until_connected_again.inc
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# Turn off reconnect again
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--disable_reconnect
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--echo #
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--echo # Try to insert more to the example table with foreign keys.
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--echo # Bug60196 causes the foreign key file not to be found after
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--echo # the resstart above.
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--echo #
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SELECT * FROM Bug_60196;
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INSERT INTO Bug_60196 VALUES (2, 1);
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INSERT INTO Bug_60196 VALUES (2, 2);
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INSERT INTO Bug_60196 VALUES (2, 3);
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SELECT * FROM Bug_60196;
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--echo
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--echo # Clean up.
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DROP TABLE Bug_60196;
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DROP TABLE Bug_60196_FK1;
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DROP TABLE Bug_60196_FK2;
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