yaooqinn commented on a change in pull request #26412: [SPARK-29774][SQL] Date
and Timestamp type +/- null should be null as Postgres
URL: https://github.com/apache/spark/pull/26412#discussion_r353032872
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala
##########
@@ -246,6 +247,68 @@ class Analyzer(
CleanupAliases)
)
+ /**
+ * For [[UnresolvedAdd]]:
+ * 1. If one side is timestamp/date/string and the other side is interval,
turns it to
Review comment:
neither for pg,
```
postgres=# select cast(1 as interval);
ERROR: cannot cast type integer to interval
LINE 1: select cast(1 as interval);
^
postgres=# select cast(1 as date);
ERROR: cannot cast type integer to date
LINE 1: select cast(1 as date);
^
postgres=# select interval '1' day + 1;
ERROR: operator does not exist: interval + integer
LINE 1: select interval '1' day + 1;
^
```
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