[GitHub] [carbondata] jackylk commented on a change in pull request #3528: [CARBONDATA-3630] update should support limit 1 sub query and empty result subquery

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jackylk commented on a change in pull request #3528: [CARBONDATA-3630] update should support limit 1 sub query and empty result subquery
URL: https://github.com/apache/carbondata/pull/3528#discussion_r361772320
 
 

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 File path: integration/spark2/src/main/scala/org/apache/spark/sql/parser/CarbonSpark2SqlParser.scala
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 @@ -247,8 +248,61 @@ class CarbonSpark2SqlParser extends CarbonDDLSqlParser {
       case tab ~ columns ~ rest =>
         val (sel, where) = splitQuery(rest)
         val selectPattern = """^\s*select\s+""".r
+        // comma separated string
 
 Review comment:
   explain in more detail what the logic it is

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