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Posted to issues@spark.apache.org by "Deborah Siegel (JIRA)" <ji...@apache.org> on 2015/08/26 23:04:45 UTC

[jira] [Comment Edited] (SPARK-9316) Add support for filtering using `[` (synonym for filter / select)

    [ https://issues.apache.org/jira/browse/SPARK-9316?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14715472#comment-14715472 ] 

Deborah Siegel edited comment on SPARK-9316 at 8/26/15 9:03 PM:
----------------------------------------------------------------

Hi. I just built spark from the latest github today.

This worked as expected: 
>subsetdf <- df[df$name == "Andy", c(1,2)]  

However, with all due respect, got some errors.

>subsetdf <- df[df$age %in% c(19, 30), 1:2] 
Error in df[df$age %in% c(19, 30), 1:2] : 
  error in evaluating the argument 'i' in selecting a method for function '[': Error in match(x, table, nomatch = 0L) : 
  'match' requires vector arguments

the following filter worked previously for me: 
>subsetdf <- filter(df, "age in (19, 30)") 

so I tried this syntax, which gave different error:
> subsetdf <- df["age in (19, 30),1:2"]
Error in df["age in (19, 30),1:2"] : 
  object of type 'S4' is not subsettable


was (Author: dsiegel):
Hi. I just built spark from the latest github today.

This worked as expected: 
>subsetdf <- df[df$name == "Andy", c(1,2)]  

However, not sure about this:

>subsetdf <- df[df$age %in% c(19, 30), 1:2] 
Error in df[df$age %in% c(19, 30), 1:2] : 
  error in evaluating the argument 'i' in selecting a method for function '[': Error in match(x, table, nomatch = 0L) : 
  'match' requires vector arguments

the following filter works for me: 
>subsetdf <- filter(df, "age in (19, 30)") 

so I tried this syntax, which didn't work:
> subsetdf <- df["age in (19, 30),1:2"]
Error in df["age in (19, 30),1:2"] : 
  object of type 'S4' is not subsettable

> Add support for filtering using `[` (synonym for filter / select)
> -----------------------------------------------------------------
>
>                 Key: SPARK-9316
>                 URL: https://issues.apache.org/jira/browse/SPARK-9316
>             Project: Spark
>          Issue Type: Sub-task
>          Components: SparkR
>            Reporter: Shivaram Venkataraman
>            Assignee: Felix Cheung
>             Fix For: 1.6.0, 1.5.1
>
>
> Will help us support queries of the form 
> {code}
> air[air$UniqueCarrier %in% c("UA", "HA"), c(1,2,3,5:9)]
> {code}



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