Using group to drop legacy vertex

[Alex LI]

HIya,

I have some duplicate vertex with same uuid (not the db id) and type, and every time when I lookup a existing vertex I want to drop the legacy vertex as well. I have the following gremlin query to do that but the `range` bit is something I am concern on or want to find a better way to do it.

g.V().has("uuid", "f7405ad2").has("type", "car").order().by("lastModified", decr).values("lastModified").limit(local, 3)

==>1512615609790

==>1512615245766

So basically I want to remove every vertex except the fist vertex because the first vertex is the most up-do-date. (assume only 2 duplicate vertex in this example, but could be more)

And I do:

g.V().has("uuid", "f7405ad2").has("type", "car").order().by("lastModified", decr).range(1, 1000).drop()

this works, but the rang to 1000 is something I want to avoid. is there a better way to do it?

Thanks and regards,

Alex

[Robert Dale]

What about it do you want to avoid?    You can do range(1,-1). 3.3 has skip(1).

Robert Dale

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[Alex LI]

Thanks Rob,

-1 works here. cannot find it in the doc though

Thanks,

Alex

On Saturday, 9 December 2017 02:39:05 UTC+11, Robert Dale wrote:

What about it do you want to avoid?    You can do range(1,-1). 3.3 has skip(1).

Robert Dale

On Wed, Dec 6, 2017 at 11:04 PM, Alex LI <zhal...@gmail.com> wrote:

HIya,

I have some duplicate vertex with same uuid (not the db id) and type, and every time when I lookup a existing vertex I want to drop the legacy vertex as well. I have the following gremlin query to do that but the `range` bit is something I am concern on or want to find a better way to do it.

g.V().has("uuid", "f7405ad2").has("type", "car").order().by("lastModified", decr).values("lastModified").limit(local, 3)

==>1512615609790

==>1512615245766

So basically I want to remove every vertex except the fist vertex because the first vertex is the most up-do-date. (assume only 2 duplicate vertex in this example, but could be more)

And I do:

g.V().has("uuid", "f7405ad2").has("type", "car").order().by("lastModified", decr).range(1, 1000).drop()

this works, but the rang to 1000 is something I want to avoid. is there a better way to do it?

Thanks and regards,

Alex

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