mariadb/mysql-test
Dave Gosselin b096ed3af8 MDEV-37260 Implicitly named query blocks, CREATE VIEW AS supports hints
Query blocks have implicit names, such as `select#1`, formulated
by appending their select number to the string `select#`.  This patch
allows hints to scope their applicability by implicit query block
name.  For example,
  SELECT /*+ JOIN_ORDER(@`select#2` t1, t2) */ ...
@`select#2` is an implicit query block name.  Users can control hint
applicability per query block without first naming the blocks with
QB_NAME().

Hints may now be specified within VIEWs during their creation and
they are applied locally within that VIEW's scope.  For example,
  CREATE VIEW v1 AS
    SELECT /*+ IGNORE_INDEX(t1 idx1) */ FROM t1 ... GROUP BY ... HAVING ...
In many cases and for some parts of the VIEW, the query plan
doesn't really depend on how the VIEW is used, so it makes sense
to control a part of the query plan from the VIEW definition.

Implicit names are not yet supported in VIEWs.  Attempting to create
a VIEW with an implicit name reference will cause the server to create
the VIEW, but it will emit a warning and exclude that hint from the query.
2025-08-29 14:18:12 -04:00
..
collections MDEV-9804 Implement a caching_sha2_password plugin 2025-07-27 13:57:06 +02:00
include Merge branch '12.0' into 12.1 2025-08-03 15:01:09 +02:00
lib Merge branch '11.8' into 12.0 2025-05-22 09:22:55 +02:00
main MDEV-37260 Implicitly named query blocks, CREATE VIEW AS supports hints 2025-08-29 14:18:12 -04:00
std_data Merge branch '11.8' into 12.0 2025-06-18 07:50:39 +02:00
suite 12.2 branch 2025-08-04 21:28:16 +02:00
asan.supp
CMakeLists.txt
dgcov.pl
lsan.supp
mariadb-stress-test.pl Fix typos in mysql-test/ 2025-04-29 13:53:16 +10:00
mariadb-test-run.pl Merge branch '11.8' into 12.0 2025-07-31 20:55:47 +02:00
mtr.out-of-source
purify.supp
README
README-gcov
README.stress
suite.pm
valgrind.supp Fix typos in mysql-test/ 2025-04-29 13:53:16 +10:00

This directory contains test suites for the MariaDB server. To run
currently existing test cases, execute ./mysql-test-run in this directory.

Some tests are known to fail on some platforms or be otherwise unreliable.
In the file collections/smoke_test there is a list of tests that are
expected to be stable.

In general you do not have to do "make install", and you can have
a co-existing MariaDB installation, the tests will not conflict with it.
To run the tests in a source directory, you must do "make" first.

In Red Hat distributions, you should run the script as user "mysql".
The user is created with nologin shell, so the best bet is something like
  # su -
  # cd /usr/share/mariadb-test
  # su -s /bin/bash mysql -c ./mysql-test-run

This will use the installed MariaDB executables, but will run a private
copy of the server process (using data files within /usr/share/mariadb-test),
so you need not start the mysqld service beforehand.

You can omit --skip-test-list option if you want to check whether
the listed failures occur for you.

To clean up afterwards, remove the created "var" subdirectory, e.g.
  # su -s /bin/bash - mysql -c "rm -rf /usr/share/mariadb-test/var"

If tests fail on your system, please read the following manual section
for instructions on how to report the problem:

https://mariadb.com/kb/en/reporting-bugs

If you want to use an already running MySQL server for specific tests,
use the --extern option to mysql-test-run. Please note that in this mode,
you are expected to provide names of the tests to run.

For example, here is the command to run the "alias" and "analyze" tests
with an external server:

  # mariadb-test-run --extern socket=/tmp/mysql.sock alias analyze

To match your setup, you might need to provide other relevant options.

With no test names on the command line, mysql-test-run will attempt
to execute the default set of tests, which will certainly fail, because
many tests cannot run with an external server (they need to control the
options with which the server is started, restart the server during
execution, etc.)

You can create your own test cases. To create a test case, create a new
file in the main subdirectory using a text editor. The file should have a .test
extension. For example:

  # xemacs t/test_case_name.test

In the file, put a set of SQL statements that create some tables,
load test data, and run some queries to manipulate it.

Your test should begin by dropping the tables you are going to create and
end by dropping them again. This ensures that you can run the test over
and over again.

If you are using mysqltest commands in your test case, you should create
the result file as follows:

  # mariadb-test-run --record test_case_name

  or

  # mariadb-test --record < t/test_case_name.test

If you only have a simple test case consisting of SQL statements and
comments, you can create the result file in one of the following ways:

  # mariadb-test-run --record test_case_name

  # mariadb test < t/test_case_name.test > r/test_case_name.result

  # mariadb-test --record --database test --result-file=r/test_case_name.result < t/test_case_name.test

When this is done, take a look at r/test_case_name.result.
If the result is incorrect, you have found a bug. In this case, you should
edit the test result to the correct results so that we can verify that
the bug is corrected in future releases.

If you want to submit your test case you can send it
to developers@lists.mariadb.org or attach it to a bug report on
http://mariadb.org/jira/.

If the test case is really big or if it contains 'not public' data,
then put your .test file and .result file(s) into a tar.gz archive,
add a README that explains the problem, ftp the archive to
ftp://ftp.mariadb.org/private and submit a report to
https://mariadb.org/jira about it.

The latest information about mysql-test-run can be found at:
https://mariadb.com/kb/en/mariadb/mysqltest/

If you want to create .rdiff files, check
https://mariadb.com/kb/en/mariadb/mysql-test-auxiliary-files/