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From "Hyukjin Kwon (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (SPARK-16386) SQLContext and HiveContext parse a query string differently
Date Sat, 08 Oct 2016 14:29:20 GMT

     [ https://issues.apache.org/jira/browse/SPARK-16386?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Hyukjin Kwon resolved SPARK-16386.
----------------------------------
    Resolution: Cannot Reproduce

I can;t reproduce the problematic case 2

{code}
context.sql("select 'a\\'b'").show()
+---+
|a'b|
+---+
|a'b|
+---+
{code}

> SQLContext and HiveContext parse a query string differently
> -----------------------------------------------------------
>
>                 Key: SPARK-16386
>                 URL: https://issues.apache.org/jira/browse/SPARK-16386
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 1.6.0, 1.6.1, 1.6.2
>         Environment: scala 2.10, 2.11
>            Reporter: Hao Ren
>              Labels: patch
>
> I just want to figure out why the two contexts behavior differently even on a simple
query.
> In a netshell, I have a query in which there is a String containing single quote and
casting to Array/Map.
> I have tried all the combination of diff type of sql context and query call api (sql,
df.select, df.selectExpr).
> I can't find one rules all.
> Here is the code for reproducing the problem.
> {code}
> import org.apache.spark.sql.SQLContext
> import org.apache.spark.sql.hive.HiveContext
> import org.apache.spark.{SparkConf, SparkContext}
> object Test extends App {
>   val sc          = new SparkContext("local[2]", "test", new SparkConf)
>   val hiveContext = new HiveContext(sc)
>   val sqlContext  = new SQLContext(sc)
>   val context = hiveContext
>   //  val context = sqlContext
>   import context.implicits._
>   val df = Seq((Seq(1, 2), 2)).toDF("a", "b")
>   df.registerTempTable("tbl")
>   df.printSchema()
>   // case 1
>   context.sql("select cast(a as array<string>) from tbl").show()
>   // HiveContext => org.apache.spark.sql.AnalysisException: cannot recognize input
near 'array' '<' 'string' in primitive type specification; line 1 pos 17
>   // SQLContext => OK
>   // case 2
>   context.sql("select 'a\\'b'").show()
>   // HiveContext => OK
>   // SQLContext => failure: ``union'' expected but ErrorToken(unclosed string literal)
found
>   // case 3
>   df.selectExpr("cast(a as array<string>)").show() // OK with HiveContext and SQLContext
>   // case 4
>   df.selectExpr("'a\\'b'").show() // HiveContext, SQLContext => failure: end of input
expected
> }
> {code}



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