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Boolean field accepts an empty string, does not index as `null` · Issue #61038 · elastic/elasticsearch · GitHub
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Filter document with not null value in Kibana Discover. Should I use "exist", but it still return me docs with empty field - Kibana - Discuss the Elastic Stack
Solved: How to search and remove null values in flow file ... - Cloudera Community - 224865
Incorrect blank query sent to Elasticsearch when using Text box · Issue #17442 · grafana/grafana · GitHub
c# - Elastic Search adding empty values for all the documents. How can I add complete object/class? - Stack Overflow
Missing vs. Empty Fields - The Elasticsearch Handbook
Solved: How to search and remove null values in flow file ... - Cloudera Community - 224865
Empty or Blank String Check Java Example | Codez Up
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Filter document with not null value in Kibana Discover. Should I use "exist", but it still return me docs with empty field - Kibana - Discuss the Elastic Stack