07ARB commented on a change in pull request #26477: [SPARK-29776][SQL] rpad
should return NULL when padstring parameter is empty
URL: https://github.com/apache/spark/pull/26477#discussion_r361442888
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File path: sql/core/src/test/resources/sql-tests/inputs/postgreSQL/strings.sql
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@@ -629,6 +629,7 @@ SELECT rpad('hi', 5);
SELECT rpad('hi', -5, 'xy');
SELECT rpad('hello', 2);
SELECT rpad('hi', 5, '');
+-- PostgreSQL return: hi: because not implemented as per the rpad
behaviours(In case of empty pad string, the return value is null)
Review comment:
ok
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