cloud-fan commented on issue #27627: [WIP][SPARK-28067][SQL] Fix incorrect results for decimal aggregate sum by returning null on decimal overflow URL: https://github.com/apache/spark/pull/27627#issuecomment-615065652 @skambha check the result in PostgreSQL: ``` cloud0fan=# create table t(d decimal(20, 10)); CREATE TABLE cloud0fan=# insert into t values (1.1); INSERT 0 1 cloud0fan=# insert into t values (2.2); INSERT 0 1 cloud0fan=# insert into t values (null); INSERT 0 1 cloud0fan=# select sum(d) from t; sum -------------- 3.3000000000 (1 row) ``` Nulls should be skipped when calculating aggregate functions.
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