[jira] [Created] (IMPALA-13504) AI functions should be included in FunctionCallExpr::isNondeterministicBuiltinFn

["Joe McDonnell (Jira)" <ji...@apache.org>]

Joe McDonnell created IMPALA-13504:
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             Summary: AI functions should be included in FunctionCallExpr::isNondeterministicBuiltinFn
                 Key: IMPALA-13504
                 URL: https://issues.apache.org/jira/browse/IMPALA-13504
             Project: IMPALA
          Issue Type: Bug
          Components: Frontend
    Affects Versions: Impala 4.5.0
            Reporter: Joe McDonnell


FunctionCallExpr::isNondeterministicBuiltinFn() is used to determine if a function can produce different results for different invocations with the same arguments in a single query. Currently, it applies to rand/random/uuid. It can influence sorting (see IMPALA-4728). It is also controls whether constant folding can be used (if all the arguments are constants). It would be uncommon for an AI function to be used on a constant, but it is theoretically possible.

It seems like ai_generate_text / ai_generate_text_default should be on that list, because it isn't deterministic.



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