Expand Columns from lists of R data.frame

[wicker]

I get data from MongoDB with R library mongolite like this:

library(mongolite)

m <- mongo(collection = collectionname,
db = dbname,
url = urlname)

Query<-m$find(query = "{}", fields = "{\"_id\":0}", sort = "{}", skip = 0, limit = 0, handler = NULL, pagesize = 1000)

what I get in BI

I can't expand this columns like using JSON, for example.

In R Frame this columns are lists

How should I change R-script to get data from this lists too?

[v-jiascu-msft]

Hi @wicker,

You need to convert it in R. Try this formula, please.

library(mongolite)

m <- mongo(collection = "inventory", db = "retail", url = "mongodb://localhost/?ssl=false")
Query <- m$find(query = "{}", fields = "{\"_id\":0}", sort = "{}", skip = 0, limit = 0, handler = NULL, pagesize = 1000)
nrows <- nrow(Query)  
colnames <- names(unlist(Query))
result <- data.frame(matrix(unlist(Query), nrow = nrows, byrow = T))
names(result) <- colnames  #add names to the result set

Best Regards,

Dale

[wicker]

Thanks for help!

But now I get error...

Also, I have such unusual structure of lists. There are different columns in custom_fields for different documents in MongoDB. For example, there are 2 columns on screenshot below, but sometimes there are 3 or more columns or 2 another columns' names.

[v-jiascu-msft]

Hi @wicker,

Please share a sample. It would be great to have a format that can be imported into Mongo.

Best Regards,

Dale

[wicker]

Hi, @v-jiascu-msft

This is JSON sample from Mongo - https://pastebin.com/2QRQBJQz

Desired result from this JSON is on the screen below

All tags are in column "tags", separated by commas. For each custom_field we create column with it's value.

[raveeo]

Hi

Were you able to get through this? I am having a similar requirement.

Thanks 

Ravi