elasticsearch7.5 数组追加,同时字段更新, es判断字段是否存在,用null

"_source" : {

"ann_list" : [
{
"ann_date" : "2018-12-20",
"ann_num" : "1628"
}],

"ann_status" : 1

}

ann_list = {1:1,2:2}

　

data = {
                        "script": {
                            "source":"""
                            ctx._source.ann_status=params.ann_status;
                            if (ctx._source.ann_list== null) {ctx._source.ann_list=params.tag}else{ctx._source.ann_list.add(params.tag1)}
                            """,
                            "lang": "painless",
                            "params": {
                                "tag": [ann_list],
                                "tag1": ann_list,
                                "ann_status": 1
                            }
                        },
                        "query": {
                            "match": {
                            "rid": rid
                            }
                        }
                    }
                    es.update_by_query(index='test', body=data)
 

　　elasticsearch painless语法判断字段不存在,ctx._source.字段== null

参考文档

https://www.elastic.co/guide/en/elasticsearch/painless/current/painless-walkthrough.html

https://www.elastic.co/guide/en/elasticsearch/reference/7.6/docs-update-by-query.html