We have strange behavior with aliases

We have two SOQL

SELECT ArticleNumber,Id,KnowledgeArticleId,Language FROM Regular_Articles__kav WHERE Language = 'it' LIMIT 5
 
SELECT a.ArticleNumber,a.Id,a.KnowledgeArticleId,a.Language FROM Regular_Articles__kav a WHERE a.Language = 'it' LIMIT 5 

This SOQL requests get different responses from SF because in second request we have alias for table.

It is mystics from SF (we made bug in sf)

How we can call

SELECT ArticleNumber,Id,KnowledgeArticleId,Language FROM Regular_Articles__kav WHERE Language = 'it' LIMIT 5
 in Teiid without aliases?