FearfulTomcat27 opened a new pull request, #15679:
URL: https://github.com/apache/iotdb/pull/15679

   This pull request refines the validation logic for the 
`approx_most_frequent` function in the SQL parser. The primary change ensures 
that the second and third arguments are explicitly validated as positive 
integer literals, improving clarity and correctness.
   
   ### Validation improvements for function arguments:
   * In `AstBuilder.java`, updated the validation logic for the 
`approx_most_frequent` function to check that the second and third arguments 
are positive integer literals (`LongLiteral`) when three arguments are 
provided. This replaces the previous generic numeric literal check.
   
   * Removed the `isNumericLiteral` helper method, as it is no longer used 
following the updated validation logic.


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