[RFC]: Avoid using reserved keywords as table names

[alexmerlin]

RFC

We need to stop using reserved keywords (e.g.: order) as table names.
But if it's a must, then wrap them in backticks.

Same for table columns: names such as group, order etc must be avoided.

Q	A
Proposed Version(s)	6.1.0
BC Break?	Yes

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Note

These reserved keywords differ based on the platform.

Example: Cannot create table user on PostgreSQL, but it works on MariaDB.

[alexmerlin]

Fixed in #456