Paul Rogers created DRILL-6378: ---------------------------------- Summary: MajorType passed into UDF with FieldReader has unset prec, scale for DECIMAL Key: DRILL-6378 URL: https://issues.apache.org/jira/browse/DRILL-6378 Project: Apache Drill Issue Type: Bug Affects Versions: 1.13.0 Reporter: Paul Rogers
UDFs allow passing in a generic {{FieldReader}} such as for the {{typeof}} function. I tried to modify the new {{sqlTypeOf()}} function to include the DECIMAL precision and scale, something like: {{DECIMAL(9, 2)}}. But, the {{MajorType}} associated with the {{FieldReader}} has these values as 0. Not sure if it is because the DECIMAL is the result of a cast, or if there is a deeper bug. Query: {noformat} ALTER SESSION SET `planner.enable_decimal_data_type` = true; SELECT sqlTypeof(CAST(a AS DECIMAL)) FROM (VALUES (1)) AS T(a); {noformat} Debug information for the {{MajorType}} {noformat} type TypeProtos$MajorType (id=151) precision_ 0 scale_ 0 {noformat} This bug is not simply a nuisance for formatting. The precision and scale are required to make sense of any {{DECIMAL}} values that the function wants to process: without these values, the function does not know the meaning of the {{DECIMAL}} data. Once this bug is fixed, reenable the type suffix code in {{UnionFunctions.extendType()}}. -- This message was sent by Atlassian JIRA (v7.6.3#76005)