vibhatha commented on a change in pull request #12113:
URL: https://github.com/apache/arrow/pull/12113#discussion_r826508187
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File path: r/R/query-engine.R
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@@ -166,14 +165,18 @@ ExecPlan <- R6Class("ExecPlan",
# (as when we've done collapse() and not projected after) is
cheap/no-op
projection <- c(.data$selected_columns, .data$temp_columns)
node <- node$Project(projection)
-
if (!is.null(.data$join)) {
+ right_node <- self$Build(.data$join$right_data)
+ left_output <- names(.data)
Review comment:
I am not 100% understand why. I didn't change that line, but I added a
few variables for readability of the code that's why it reflects as a change.
But for my curiosity I made the change you requested, it breaks a few test
cases when we do it like that. In this modification, I only inserted the prefix
field and the suffix field.
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