Fix Fingerprint() to make it work correctly with MAX_EXECUTION_TIME statement

[yehornaumenko]

https://perconadev.atlassian.net/browse/PMM-13757

Function func Fingerprint(q string) string does not work correctly with SELECT /*+ MAX_EXECUTION_TIME(<number>) */ statement.

For queries where column names are wrapped into backticks ``, MAX_EXECUTION_TIME(123) statement is preserved with a number. The number is not replaced by ?.

For queries where column names are not wrapped into backticks, it works correctly and does not copy MAX_EXECUTION_TIME(<number>) to a fingerprint at all.

This PR:

1. Adds tests for above-mentioned cases
2. Adds a fix that make the Fingerprint() function work correctly with MAX_EXECUTION_TIME()

[ademidoff]

Thanks for your contribution 👍

[yehornaumenko]

Just to be clear
I've chosen PMM-2.0 as a target branch because it is the one used in percona/pmm

[ademidoff]

Just to be clear I've chosen PMM-2.0 as a target branch because it is the one used in percona/pmm

Yes, that's fine - it's the project default branch.

[yehornaumenko]

Is there anything further needed from my side to get the PR merged?
PS Thank you for the review!

[ademidoff]

Is there anything further needed from my side to get the PR merged? PS Thank you for the review!

Nothing more, it's ready for testing as is. Unfortunately, we have to wait until we release our next product version, which is what prevents us from merging this PR sooner.

Apologies for that and thanks a lot!

[yehornaumenko]

Got it.
Thank you!

[marat-saddarov]

Any hints about when the next product version will be/planned to be released would be very much appreciated :)!