FIX #11285 CONSTRAINT FOREIGN KEY ON DELETE was missing SET DEFAULT from mysql reflection

[quentin-roche]

CONSTRAINT FOREIGN KEY ON DELETE SET DEFAULT is missing from mysql reflection.

Description

This was discussed in issue 11285.

MySQL documentation for FOREIGN KEY Constraints.

I added the SET DEFAULT in the reflexion regex and modified one of the test case since both were testing for ON DELETE CASCADE.

Fixes: #11285

Checklist

This pull request is:

• A documentation / typographical / small typing error fix
  • Good to go, no issue or tests are needed
• A short code fix
  • please include the issue number, and create an issue if none exists, which
    must include a complete example of the issue. one line code fixes without an
    issue and demonstration will not be accepted.
  • Please include: Fixes: #<issue number> in the commit message
  • please include tests. one line code fixes without tests will not be accepted.
• A new feature implementation
  • please include the issue number, and create an issue if none exists, which must
    include a complete example of how the feature would look.
  • Please include: Fixes: #<issue number> in the commit message
  • please include tests.

Have a nice day!

[CaselIT]

thanks.
let's make it run the pipeline

[sqla-tester]

OK, this is sqla-tester setting up my work on behalf of CaselIT to try to get revision dbd9c23 of this pull request into gerrit so we can run tests and reviews and stuff

[sqla-tester]

New Gerrit review created for change dbd9c23: https://gerrit.sqlalchemy.org/c/sqlalchemy/sqlalchemy/+/5297

[sqla-tester]

Gerrit review https://gerrit.sqlalchemy.org/c/sqlalchemy/sqlalchemy/+/5297 has been merged. Congratulations! :)

[sqla-tester]

Gerrit review https://gerrit.sqlalchemy.org/c/sqlalchemy/sqlalchemy/+/5298 has been merged. Congratulations! :)