chenkovsky opened a new pull request, #15212:
URL: https://github.com/apache/datafusion/pull/15212

   ## Which issue does this PR close?
   
   - Closes #15127.
   
   ## Rationale for this change
   
   Most SQL dialects don't support specialized join types like LEFT SEMI, LEFT 
ANTI, LEFT MARK, RIGHT SEMI, or RIGHT ANTI joins. 
   
   ## What changes are included in this PR?
   
   For these cases, this PR rewrites these joins into equivalent EXISTS 
subqueries. 
   
   However, an alternative approach would be to generate dialect-specific SQL 
for different database engines.
   
   
   ## Are these changes tested?
   
   unit test
   
   ## Are there any user-facing changes?
   
   No.


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