[Why] We need only get specific field instead of entire document. it's like SQL: SELECT DISTINCT column FROM table Signed-off-by: Lu Weitao <luweitaobe@163.com> --- lib/es_query.rb | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/lib/es_query.rb b/lib/es_query.rb index 3bea624..86c078f 100644 --- a/lib/es_query.rb +++ b/lib/es_query.rb @@ -61,6 +61,30 @@ class ESQuery return result[0]['_source'] end + + # select doc_field from index + # input: + # eg: suite (@index: jobs) + # output: + # [ + # {"key"=>"build-pkg", "doc_count"=>90841}, + # {"key"=>"cci-depends", "doc_count"=>4636}, + # {"key"=>"cci-makepkg", "doc_count"=>3647}, + # ... + # ] + def query_specific_fields(field) + query = { + aggs: { + "all_#{field}" => { + terms: { field: field, size: 1000 } + } + }, + size: 0 + } + result = @client.search index: @index + '*', body: query + + result ['aggregations']["all_#{field}"]['buckets'] + end end # Range Query Example: -- 2.23.0