how to create a new partitioned CouchDB document via postman (with random id)?
To create a new document you usually send it as a json format without the id, where the id gets random generated.
But how do I create a new document where I have to send the partition which will be in the id field, and still generate a random id?
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I plan to write S3 objects in JSON format. It is possible that over time, more keys will get added to the JSON objects(the objects that are written later in time).
I then plan to generate csv.gz files by running athena query on these S3 objects.
What I do not want to do is modify the athena table to keep adding column names as new keys get added into json. How do I deal with this? Is it possible that Athena can store the entire json in one string column and then conver that column's json into csv somehow when I query? Remember, I may not know all the column names upfront is the challenge as the json keys for future objects can have more keys then older objects
I am developing a web service and is new to pyrebase.. I only want to fetch data from database having key greater than the particular value.
click here to see image
suppose I want to fetch data with key value greater than 154711668000 what should I write??
To filter items based on their key, you use order_by_key and start_at:
users_by_key = db.child("users").order_by_key().start_at("154711668000").get()
I am using the Firebase C++ SDK (on desktop) to retrieve data from the realtime database. I want to store some parts of the database on the client but I can only get a firebase::Variant. I would just like to store the json that belongs to the data path as a file.
I could iterate over the data and generate json from that, but that seems to be a lot of overkil as the data is retrieved from json in the first place.
Is there a way to retrieve the json itself (as text), instead of querying the values and children from firebase::database::DataSnapshot?
Kind regards,
Jeroen
I am using DynamoDBMapper class to save my data in DynamoDB where id is auto generated.
I need to send back newly created record as response to update frontend data but the problem is, unlike other ORM framework, DynamoDBMapper save methods is not returning ID of newly created record.
If I can get newly created record ID than i can use load() method to fetch record from DB.
what is best way to get newly created record other then query or scan on table?
I have a database in Couch db with documents like:
{"foo":["bar1":"baz","bar2":18,"bar3":23.2]}
Is there a way for me to do batch checking of each value before inserting new documents?
What I want to achieve is if in any document in the database the key value pair foo.bar1 = baz and foo.bar2=1 exists where baz is equal to the new value I want to insert, the batch function should not insert the new document.
More concretely, the foo.bar is a datetime and if that datetime exists and another value in the same document is of a given value, no update shall be executed.
I could solve this by doing single requests for insert by first doing a request for the values and then let the client decide. But that will be very time consuming with all the data sent back and forth between client and couch db. Also I prefer to rely on the integrity of a database when doing this kinds of checks. Or is that the sql way of solving the problem?
You need to use Bulk Document API. After you send a list of desired keys to _all_docs, you will get a response with statuses. Not found keys will have status 'error' (not found)