如何从 json 导出 CSV 文件，并通过 JQ 进行乘法运算

Question

我有 json 像这样的东西

{"lastUpdateId":18891938,
"bids":[
    ["3.23600000","101.76600000"],
    ["3.23500000","2161.63600000"],
    ["3.23100000","30.95000000"],
    ["3.23000000","3.12600000"],
    ["3.22900000","303.95100000"]
],
"asks":[
    ["3.24100000","15.90200000"],
    ["3.24200000","1679.00000000"],
    ["3.24500000","953.98800000"],
    ["3.24800000","7.57700000"],
    ["3.25400000","37.26700000"]
]}

然后我想将它导出到 CSV 与每一行的乘法结果（即第一行应该是这样的）

"bids","3.23600000","101.76600000","329.314776" <- 这是根据 3.23600000 * 101.76600000 计算得出的

现在，下面的代码导出第一个数字和第二个数字，但是它们相乘的结果。

jq -r keys[] as $k | select(.[$k]|type=="array") |[$k]+.[$k][]|@csv

如何在每行的末尾一起导出乘法结果？

https://jqplay.org/s/8zMbHxlfoz

Answer 1

您只需要在 jq 程序中添加一行：

keys[] as $k 
| select(.[$k]|type=="array") 
| [$k]+.[$k][]
| .[length]= (.[-2:]|map(tonumber)|.[0]*.[1])
|@csv

您可能希望输入一个tostring 。