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我有我试图导入到 SQL Server 数据库的 json 数据，但它没有要引用的路径名 - 我如何通过在此处识别不同的元素来进行：

示例 json：https ://api.cryptowat.ch/markets/binance/btcusdt/ohlc?periods=3600

这以以下格式输出，但没有名称：

[
  CloseTime,
  OpenPrice,
  HighPrice,
  LowPrice,
  ClosePrice,
  Volume,
  QuoteVolume
]

[
    1474736400,
    8744,
    8756.1,
    8710,
    8753.5,
    91.58314308,
    799449.488966417
],

在此之后：https ://docs.microsoft.com/en-us/sql/t-sql/functions/json-value-transact-sql?view=sql-server-ver15

但不确定在这里放什么： JSON_VALUE ( expression , path ) as the path bit - 任何帮助表示赞赏

谢谢！

4

1 回答 1

0

这似乎是一堆代表行的数组。像这样的查询应该这样做：

declare @json nvarchar(max) = '
{"result":{"3600":[[1606705200,18482.31,18550,18435.81,18506.87,2470.427799,45664903.49372367],[1606708800,18506.87,18593.81, ...
'

select dateadd(second,cast(json_value([value],'$[0]') as bigint),'19700101') CloseTime,
       cast(json_value([value],'$[1]') as float) OpenPrice,
       cast(json_value([value],'$[2]') as float) HighPrice,
       cast(json_value([value],'$[3]') as float) LowPrice,
       cast(json_value([value],'$[4]') as float) ClosePrice,
       cast(json_value([value],'$[5]') as float) Volume,
       cast(json_value([value],'$[6]') as float) QuoteVolume

from openjson(@json,'$.result."3600"')

哪个输出

CloseTime               OpenPrice              HighPrice              LowPrice               ClosePrice             Volume                 QuoteVolume
----------------------- ---------------------- ---------------------- ---------------------- ---------------------- ---------------------- ----------------------
2020-11-30 03:00:00.000 18482.31               18550                  18435.81               18506.87               2470.427799            45664903.4937237
2020-11-30 04:00:00.000 18506.87               18593.81               18431.26               18579.5                2283.371404            42288794.16279
2020-11-30 05:00:00.000 18579.67               18619.79               18450                  18523.79               2119.718173            39247661.0930612
2020-11-30 06:00:00.000 18523.79               18627.29               18477.62               18520.47               1835.535407            34068066.5616724
2020-11-30 08:00:00.000 18520.27               18677                  18512.9                18623                  3499.555499            65178082.9264658
2020-11-30 09:00:00.000 18623.05               18625                  18375.55               18462.31               4220.609403            77972731.2494644
2020-11-30 10:00:00.000 18462.7                18510                  18326.03               18478.54               3054.085606            56248649.2319086
2020-11-30 11:00:00.000 18478.54               18589                  18446.5                18503.06               2240.917883            41516090.5672204
2020-11-30 12:00:00.000 18503.11               18655                  18503.11               18600.95               3413.482688            63562162.7584654
2020-11-30 13:00:00.000 18600.94               18840                  18600.94               18837.16               4675.208754            87625034.6027069
2020-11-30 14:00:00.000 18835.97               19210                  18788.11               19151.49               9286.987366            176378855.887698
2020-11-30 15:00:00.000 19151.49               19782.1                19135                  19480.8                15792.38031            307214715.045745
于 2021-01-10T23:23:10.283 回答