Parse.Com : How to get all data when certain column is null?

Question

I have plan to sync from my parse.com data to my postgreSql local database with JS API. To do that, i have to get all data that have null value for Column last_sync (it's mean that data did not syncing with local database).

Please help me how to get all data that last_sync is null?

Marius Waldal · Accepted Answer · 2014-05-13 07:51:22Z

5

You're not stating what language you're using, but this is a solution for Android:

query.whereDoesNotExist("last_sync");

This will constrain the query to only those records that don't have a value set in last_sync

For JavaScript:

query.doesNotExist("last_sync");

edited May 13, 2014 at 7:51

answered May 13, 2014 at 6:46

Marius Waldal

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ArtOfWarfare · Accepted Answer · 2014-10-24 23:53:19Z

0

For Objective-C:

[query whereKeyDoesNotExist:@"last_sync"];

answered Oct 24, 2014 at 23:53

ArtOfWarfare

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2 Comments

AhmadDani Over a year ago

sorry my question is for JS API not for IOS

ArtOfWarfare Over a year ago

That may have been your intent, but when people search for how to do this, regardless of platform, this question on StackOverflow is the top result. So since I know it's the top result for Obj-C (because I searched for this) I decided to add it as an answer once I found it.

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