Github user arina-ielchiieva commented on a diff in the pull request: https://github.com/apache/drill/pull/819#discussion_r114958443 --- Diff: exec/java-exec/src/main/java/org/apache/drill/exec/expr/annotations/FunctionTemplate.java --- @@ -106,15 +106,21 @@ DECIMAL_ADD_SCALE, DECIMAL_SET_SCALE, DECIMAL_ZERO_SCALE, - SC_BOOLEAN_OPERATOR + SC_BOOLEAN_OPERATOR, --- End diff -- I have made some refactoring. Now `FunctionScope` will indicate only function usage in term of number of in / out rows, (n -> 1, 1 -> 1, 1->n). I have added new annotation to `FunctionTemplate` - `ReturnType` that indicates which return type strategy should be used.
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