gatorsmile commented on issue #24749: [SPARK-27890][SQL] Improve SQL parser error message for identifier with hyphens URL: https://github.com/apache/spark/pull/24749#issuecomment-498342747 @dongjoon-hyun I checked the changes made in this PR. It does not affect the projection-like places. I think the changes are safe and nice to have. ``` scala> sql("select a-c from t").show org.apache.spark.sql.AnalysisException: cannot resolve '`c`' given input columns: [t.a, t.b]; line 1 pos 9; ```
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