[Freebase-discuss] Sort data by timestamp

Shawn Simister simister at google.com
Fri Dec 16 17:18:40 UTC 2011


The sort clause should be at the top level of the query and there also
needs to be a timestamp:null clause like I gave in my previous response so
that it can sort on that value. Also, all values are optional:false by
default so you don't need to state that explicitly. Here's what you end up
with:

[{
  "creator":     "/user/rakshit",
  "mid":         null,
  "name":        null,
  "timestamp<=": "__now__",
  "timestamp":   null,
  "sort":        "-timestamp"
}]

Have you read through the MQL
Manual<http://wiki.freebase.com/wiki/MQL_Manual_Table_of_Contents>yet?
Its a good way to learn how to write MQL queries and will probably
cover a lot of the questions you have.

On Thu, Dec 15, 2011 at 10:09 PM, Saurabh Saxena <getsaurabhsaxena at gmail.com
> wrote:

> *[{
>   "creator": "/user/rakshit",
>   "mid":     null,
>   "name": {
>     "value":    null,
>     "optional": false
>   },
>   "timestamp": {
>     "value<=":  "__now__",
>     "optional": false,
>     "sort":     "-timestamp"
>   }
> }]
> *
>
> I am using the above query and getting following error. What can be done
> for this?
> *
> *
> *message: "Unable to locate timestamp from sort"*
>
>
> Regards
> Saurabh
>
>
> On Fri, Dec 16, 2011 at 12:28 AM, Tom Morris <tfmorris at gmail.com> wrote:
>
>> On Thu, Dec 15, 2011 at 1:40 PM, Saurabh Saxena
>> <getsaurabhsaxena at gmail.com> wrote:
>>
>> > Can i sort my data in descending order by timestamp value.
>>
>> Yes.
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-- 
Shawn Simister

Developer Programs Engineer
Google, San Francisco
http://freebase.com
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