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https://issues.apache.org/jira/browse/SPARK-30826?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan resolved SPARK-30826.
---------------------------------
Fix Version/s: 3.0.0
2.4.6
Resolution: Fixed
Issue resolved by pull request 27574
[https://github.com/apache/spark/pull/27574]
> LIKE returns wrong result from external table using parquet
> -----------------------------------------------------------
>
> Key: SPARK-30826
> URL: https://issues.apache.org/jira/browse/SPARK-30826
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.4.5, 3.0.0
> Reporter: Maxim Gekk
> Assignee: Maxim Gekk
> Priority: Major
> Fix For: 2.4.6, 3.0.0
>
>
> # Write a parquet file with a column in upper case:
> {code:scala}
> Seq("42").toDF("COL").write.parquet(path)
> {code}
> # Create an external table on top of the written parquet files with a column
> in lower case
> {code:sql}
> CREATE TABLE t1 (col STRING)
> USING parquet
> OPTIONS (path '$path')
> {code}
> # Read the table using LIKE
> {code:sql}
> SELECT * FROM t1 WHERE col LIKE '4%'
> {code}
> It returns empty set but must be one row with 42.
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