From 115a9b953910259be1745d51f10ffc29d4134d64 Mon Sep 17 00:00:00 2001 From: Sutou Kouhei Date: Mon, 30 Sep 2024 17:19:02 +0900 Subject: [PATCH] Add ARROW:null_count:{exact,approximate} --- docs/source/format/CDataInterfaceStatistics.rst | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/docs/source/format/CDataInterfaceStatistics.rst b/docs/source/format/CDataInterfaceStatistics.rst index 716e2dcfcefcc..8a89160355af6 100644 --- a/docs/source/format/CDataInterfaceStatistics.rst +++ b/docs/source/format/CDataInterfaceStatistics.rst @@ -200,6 +200,12 @@ Here are pre-defined statistics keys: * - ``ARROW:min_value:approximate`` - Target dependent - The minimum value in the target. (approximate) + * - ``ARROW:null_count:exact`` + - ``int64`` + - The number of nulls in the target. (exact) + * - ``ARROW:null_count:approximate`` + - ``float64`` + - The number of nulls in the target. (approximate) * - ``ARROW:row_count:exact`` - ``int64`` - The number of rows in the target table or record batch. (exact)