jq以科学计数形式重新格式化小数-可以避免这种情况吗? [英] jq reformatting decimals in scientific notation -- can this be avoided?

问题描述

我发现JavaScipt和通过bash(和其他编程语言)通过jq创建的json数据之间存在差异.使用JavaScript，即使使用float()，我也可以创建点后最多六位的十进制数字.但是与jq有所不同，因为添加十进制值仅需要在小数点后四位数.

I found difference between json-data created by JavaScipt and via jq with bash (and other programming languages). With JavaScript I can create decimal numbers with up to six digits after the point, even when I use float(). But with jq its different, because adding a decimal value takes four digits after the decimal point only.

我的问题是我需要十进制数字存储在SQL中，该点后最多六位数字.

My problem is that I need decimal numbers to store in SQL, with up to six digits after the point.

示例:

$ JSON='{"decimal":0.00001}'
$ echo "$JSON" | jq .
{
  "decimal": 1e-05
}

我的目标是使用此行来验证小数点...

My goal is to validate the decimal with this line ...

if [[ "$TMP_DECIMAL" =~ ^[0-9]+([.][0-9]+)?$ ]] ; then

有任何建议/建议吗?

推荐答案

您无法更改jq的行为-目前，

You can't change jq's behavior -- at present date, relevant feature requests are still open -- but you can reformat your numbers after they've been retrieved. For example:

json='{"decimal":0.00001}'
decimal=$(jq '.decimal' <<<"$json")
decimal_f=$(awk -v decimal="$decimal" 'BEGIN { printf("%f\n", decimal) }' </dev/null)

echo "JQ emitted $decimal; reformatted as $decimal_f"

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