[jira] [Created] (SPARK-3654) Implement all extended HiveQL statements/commands with a separate parser combinator

["Cheng Lian (JIRA)" <ji...@apache.org>]

Cheng Lian created SPARK-3654:
---------------------------------

             Summary: Implement all extended HiveQL statements/commands with a separate parser combinator
                 Key: SPARK-3654
                 URL: https://issues.apache.org/jira/browse/SPARK-3654
             Project: Spark
          Issue Type: Bug
          Components: SQL
    Affects Versions: 1.1.0
            Reporter: Cheng Lian


Statements and commands like {{SET}}, {{CACHE TABLE}} and {{ADD JAR}} etc. are currently parsed in a quite hacky way, like this:
{code}
if (sql.trim.toLowerCase.startsWith("cache table")) {
  sql.trim.toLowerCase.startsWith("cache table") match {
    ...
  }
}
{code}
It would be much better to add an extra parser combinator that parses these syntax extensions first, and then fallback to the normal Hive parser.



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