How can i filter out documents with missing field value

Elastic Stack Elasticsearch
1

i have lots of document to index, and some of them has no value for
field "author", when search i want to be able to filter out those
documents without value for field "author"

how can i achieve it?

i tryied querystring AND author:*, but it runs very slow

2

Did you try the "exists" filter ?

Conversely, there is also a "missing" filter.

2011/6/1 Weiwei Wang ww.wang.cs@gmail.com:

i have lots of document to index, and some of them has no value for
field "author", when search i want to be able to filter out those
documents without value for field "author"

how can i achieve it?

i tryied querystring AND author:*, but it runs very slow

3

thanks, i found exist is supported by query_string

On Jun 1, 11:03 pm, Stéphane Raux stephane.r...@gmail.com wrote:

Did you try the "exists" filter ?Elasticsearch Platform — Find real-time answers at scale | Elastic....

Conversely, there is also a "missing" filter.

2011/6/1 Weiwei Wang ww.wang...@gmail.com:

i have lots of document to index, and some of them has no value for
field "author", when search i want to be able to filter out those
documents without value for field "author"

how can i achieve it?

i tryied querystring AND author:*, but it runs very slow