[Developers] help - MQL to query by type and get all types

[Chuck Steneck]

Hi David,

 

Yes exactly, I looked into it a few days back, but could not find definitive
topics/types/properties etc.

A master schema would be superb. If there's one available that I overlooked
please send a link.

Would be incredibly useful, but yes, I agree, we need to have the Overview
to see the entire range of possibilities

 

Thanks,

Chuck.

 

 

From: developers-bounces at freebase.com
[mailto:developers-bounces at freebase.com] On Behalf Of David Dennis
Sent: Wednesday, March 18, 2009 2:53 PM
To: For discussions about MQL, Freebase API and apps built on Freebase
Subject: Re: [Developers] help - MQL to query by type and get all types

 

Thanks for clearing this up.  I lost interest in working on integrating
Freebase with my site because I spent hours trying to figure out how to do
this.

If I might make a suggestion, a good straightforward intro to give
developers would be example queries for:

1) How to get all topics of a certain name
2) How to get all types for a topic
3) How to get all properties for a type
4) How to get all topics assigned as values for a property

That way developers would know exactly how to explore the full schema.  The
query editor page has a couple of example queries like these at the top, but
they only give half the picture.

David

On Wed, Mar 18, 2009 at 3:38 PM, John Merrells <john at merrells.com> wrote:


On Mar 18, 2009, at 12:33 PM, Christopher R. Maden wrote:

> John Merrells wrote:
>> But that doesn't work, as 'type' can only appear once. I can't work
>> out
>> the syntax to express this query :-( Any help much appreciated :-)
>
> JSON imposes the restriction that each key can only appear once.  In
> MQL, the work-around for that is that arbitrary colon-separated
> prefixes
> are allowed; try this instead:
>
>
> [{
>     "id" : null,
>     "name" : null,
>     "type" : "/music/artist"
>     "all:type" : []
> }]



Ah, thanks. I see it on the 'mql cheatsheet' now. It shows 'inc:', but
I now understand that any prefix would work.


John

--
John Merrells
http://www.johnmerrells.com
+1.415.244.5808






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