我正在使用 mongoexport 将一些集合导出到 CSV 文件中,但是当我尝试定位数组成员的字段时,我无法正确导出它。
我正在使用的命令:
mongoexport -d db -c collection -fieldFile fields.txt --csv > out.csv
fields.txt 的内容类似于
id
name
address[0].line1
address[0].line2
address[0].city
address[0].country
address[0].postcode
BSON 数据如下:
{
"id": 1,
"name": "example",
"address": [
{
"line1": "flat 123",
"line2": "123 Fake St.",
"city": "London",
"country": "England",
"postcode": "N1 1AA"
}
]
}
导出数组内容的正确语法是什么?
答案1
你几乎是对的,试试这个:
id
name
address.0.line1
address.0.line2
address.0.city
address.0.country
address.0.postcode
我将您的示例文档插入到bar
数据库的集合中test
,然后像这样运行导出:
./mongoexport --port 31000 -d test -c bar -fieldFile fields.txt --csv > out.csv
然后检查了结果,我觉得结果不错:
cat out.csv
id,name,address.0.line1,address.0.line2,address.0.city,address.0.country,address.0.postcode
1.0,"example","flat 123","123 Fake St.","London","England","N1 1AA"