APIv4 - Throw exception instead of munging illegal join aliases #21072
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Overview
Improves APIv4 validation of explicit join aliases.
Before
Incorrect aliases would be silently "fixed".
After
Exception thrown.
Technical Details
The problem with "fixing" an illegal join alias is that it's then mysterious what the correct alias will be, leading to bugs when the incorrect alias gets used throughout the rest of the api params.
Throwing an exception seems like a better way to ensure developers are alerted to the error.