Provide a columnar implementation for Row #31022
Open
+149
−1
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With no functional changes, this PR adds a
Columnar
implementation forRow
. It's not used yet, but will be in subsequent changes. The implementation follows theString
implementation in columnar, both types are very similar.Checklist
$T ⇔ Proto$T
mapping (possibly in a backwards-incompatible way), then it is tagged with aT-proto
label.