yaooqinn commented on issue #26410: [SPARK-29387][SQL][FOLLOWUP] Fix issues of the multiply and divide for intervals URL: https://github.com/apache/spark/pull/26410#issuecomment-550222012 Postgres will error by division of zero whether with literal or columns, which is NULL in Spark(Should be fine). ```sql postgres=# select interval '1 year' / null; ?column? ---------- (1 row) postgres=# select interval '1 year' * null; ?column? ---------- (1 row) postgres=# select interval '1 year' / null; ?column? ---------- (1 row) postgres=# select interval '1 year' / 0; ERROR: division by zero postgres=# select interval '1 year' / 0; ERROR: division by zero postgres=# select k, v, cast(k as interval) / v, cast(k as interval) * v from (VALUES ('1 seconds', 1),('2 seconds', 0),('3 seconds', null),(null, null),(null, 0)) t(k, v) postgres-# ; ERROR: division by zero postgres=# select k, v, cast(k as interval) / v, cast(k as interval) * v from (VALUES ('1 seconds', 1),('2 seconds', 0.0),('3 seconds', null),(null, null),(null, 0.0)) t(k, v) ```
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