gengliangwang commented on a change in pull request #24902: [SPARK-28093][SQL]
Fix TRIM/LTRIM/RTRIM function parameter order issue
URL: https://github.com/apache/spark/pull/24902#discussion_r294800578
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File path: sql/core/src/test/resources/sql-tests/inputs/string-functions.sql
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@@ -38,3 +38,11 @@ SELECT substring('Spark SQL', 5, 1);
SELECT substring('Spark SQL' from 5);
SELECT substring('Spark SQL' from -3);
SELECT substring('Spark SQL' from 5 for 1);
+
+-- trim/ltrim/rtrim
+SELECT trim('yxTomxx', 'xyz');
+SELECT trim('xxxbarxxx', 'x');
+SELECT ltrim('zzzytest', 'xyz');
Review comment:
Nit: add some characters of 'xyz' at the end
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