v.21.11Improvements

Remove Restriction on Projection Name Start with tmp_

Official CH changelog text
Get rid of pointless restriction on projection name. Now projection name can start with tmp_. #29520 (Amos Bird).
Removed the restriction that projection names cannot start with tmp_; projections can now have names beginning with tmp_.

Why it matters

This change eliminates an unnecessary limitation on projection naming, allowing users greater flexibility in naming their projections, especially useful for temporary or programmatically generated projections.

How to use it

Users can now create projections with names that start with tmp_ without any special configuration. Simply specify the projection name with the desired prefix during creation.

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