sql语句中过滤字段空值的写法是 select * from table where 字段 is not null
在es中过滤字段空值可以这样子写:
GET index/type/_search
{ "query": { "bool": { "must": { "exists": { "field": "字段名" } } } }}
反之 为
{ "query": { "bool": { "must_not": { "exists": { "field": "字段名" } } } }}