[jira] [Created] (SPARK-28109) TRIM(type trimStr FROM str) returns incorrect result

["Yuming Wang (JIRA)" <ji...@apache.org>]

Yuming Wang created SPARK-28109:
-----------------------------------

             Summary: TRIM(type trimStr FROM str) returns incorrect result
                 Key: SPARK-28109
                 URL: https://issues.apache.org/jira/browse/SPARK-28109
             Project: Spark
          Issue Type: Bug
          Components: SQL
    Affects Versions: 3.0.0
            Reporter: Yuming Wang


SPARK-28093 introduced a new bug:

 
{noformat}
spark-sql> SELECT trim('yxTomxx', 'xyz'), trim(BOTH 'xyz' FROM 'yxTomxx');
Tom z
spark-sql> SELECT trim('xxxbarxxx', 'x'), trim(BOTH 'x' FROM 'xxxbarxxx');
bar
spark-sql> SELECT ltrim('zzzytest', 'xyz'), trim(LEADING 'xyz' FROM 'zzzytest');
test xyz
spark-sql> SELECT ltrim('zzzytestxyz', 'xyz'), trim(LEADING 'xyz' FROM 'zzzytestxyz');
testxyz
spark-sql> SELECT ltrim('xyxXxyLAST WORD', 'xy'), trim(LEADING 'xy' FROM 'xyxXxyLAST WORD');
XxyLAST WORD
spark-sql> SELECT rtrim('testxxzx', 'xyz'), trim(TRAILING 'xyz' FROM 'testxxzx');
test xy
spark-sql> SELECT rtrim('xyztestxxzx', 'xyz'), trim(TRAILING 'xyz' FROM 'xyztestxxzx');
xyztest
spark-sql> SELECT rtrim('TURNERyxXxy', 'xy'), trim(TRAILING 'xy' FROM 'TURNERyxXxy');
TURNERyxX{noformat}
{noformat}

postgres=# SELECT trim('yxTomxx', 'xyz'), trim(BOTH 'xyz' FROM 'yxTomxx');
btrim | btrim
-------+-------
Tom | Tom
(1 row)

postgres=# SELECT trim('xxxbarxxx', 'x'), trim(BOTH 'x' FROM 'xxxbarxxx');
btrim | btrim
-------+-------
bar | bar
(1 row)

postgres=# SELECT ltrim('zzzytest', 'xyz'), trim(LEADING 'xyz' FROM 'zzzytest');
ltrim | ltrim
-------+-------
test | test
(1 row)

postgres=# SELECT ltrim('zzzytestxyz', 'xyz'), trim(LEADING 'xyz' FROM 'zzzytestxyz');
ltrim | ltrim
---------+---------
testxyz | testxyz
(1 row)

postgres=# SELECT ltrim('xyxXxyLAST WORD', 'xy'), trim(LEADING 'xy' FROM 'xyxXxyLAST WORD');
ltrim | ltrim
--------------+--------------
XxyLAST WORD | XxyLAST WORD
(1 row)

postgres=# SELECT rtrim('testxxzx', 'xyz'), trim(TRAILING 'xyz' FROM 'testxxzx');
rtrim | rtrim
-------+-------
test | test
(1 row)

postgres=# SELECT rtrim('xyztestxxzx', 'xyz'), trim(TRAILING 'xyz' FROM 'xyztestxxzx');
rtrim | rtrim
---------+---------
xyztest | xyztest
(1 row)

postgres=# SELECT rtrim('TURNERyxXxy', 'xy'), trim(TRAILING 'xy' FROM 'TURNERyxXxy');
rtrim | rtrim
-----------+-----------
TURNERyxX | TURNERyxX
(1 row)

{noformat}
 



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