dsl查询用法如下：
GET /your_index/_search
{
"_source": {
"includes": [
"timestamp", // Include the timestamp field in the search results
// Other fields you want to include
],
"excludes": []
},
"query": {
// Your query here
},
"script_fields": {
"formatted_timestamp": {
"script": {
"source": "doc['timestamp'].value.format('yyyy-MM-dd HH:mm:ss')"
}
}
}
}
示例：
{
"_source": {
"includes": [
"_host",
"_time"
],
"excludes": []
},
"query": {
"match_all": {}
},
"script_fields": {
"formatted_time": {
"script": {
"source": "doc['_time'].value != null ? doc['_time'].value.toInstant().toString() : null"
}
}
}
}
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