我有以下格式的ouchdb文件:
{
"_id": "ac4a1c9ec5921b8537fcfe4e450046ab",
"_rev": "4-4911f4615bcefa6dee88068bc8524930",
"text": "hello how are you",
"code": 111
}
{
"_id": "ac4a1c9ec5921b8537fcfe4e450057ee",
"_rev": "3-f2c94a551065000ba7d468a5a7b2624a",
"text": "what is your age",
"code": 112
}
{
"_id": "ac4a1c9ec5921b8537fcfe4e45010d36",
"_rev": "1-9c1b7d02eb0497ca3696f2ccda7df2de",
"text": "keep it up",
"code": 112
}
我想写一个map reduce以便我可以根据代码对文本字段进行分组
输出应如下所示:
key Text
111 [hello how are you]
112 [what is your age , keep it up]
答案 0 :(得分:1)
这很容易实现,您可以使用以下代码。
视图:
function (doc) {
emit(doc.code, doc.text);
}
减少
function (keys, values, rereduce) {
return values.join(",")
}
结果
{"rows":[
{"key":100,"value":"one hundred"},
{"key":123,"value":"hello test,hello world"}
]}
我在Cloudant上进行了测试。让我知道CouchDB是否存在问题