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    • Type: Sub-task
    • Status: Resolved
    • Priority: Minor
    • Resolution: Fixed
    • Affects Version/s: 2.1.0
    • Fix Version/s: None
    • Component/s: SQL
    • Labels:
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      Description

      scala> spark.sql("select * from a left joinn b on a.id = b.id").show
      org.apache.spark.sql.catalyst.parser.ParseException:
      mismatched input 'from' expecting {<EOF>, 'WHERE', 'GROUP', 'ORDER', 'HAVING', 'LIMIT', 'LATERAL', 'WINDOW', 'UNION', 'EXCEPT', 'MINUS', 'INTERSECT', 'SORT', 'CLUSTER', 'DISTRIBUTE'}(line 1, pos 9)
      
      == SQL ==
      select * from a left joinn b on a.id = b.id
      ---------^^^
      

      The issue is that ^^^ points at from, not at joinn. The text of the error makes no sense either. If *, a, and b are complex in themselves, a misleading error like this can hinder debugging substantially.

      I tried to see if maybe I could fix this. Am I correct to deduce that the error message originates in ANTLR4, which parses the query based on the syntax defined in SqlBase.g4? If so, I guess I would have to figure out how that syntax definition works, and why it misattributes the error.

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              • Assignee:
                manifoldQAQ Yesheng Ma
                Reporter:
                darabos Daniel Darabos
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                  Updated:
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