原文地址: https://www.elastic.co/guide/en/elasticsearch/reference/7.7/query-dsl-span-first-query.html, 原文档版权归 www.elastic.co 所有
IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Span first queryedit
Matches spans near the beginning of a field. The span first query maps
to Lucene SpanFirstQuery. Here is an example:
GET /_search
{
"query": {
"span_first" : {
"match" : {
"span_term" : { "user" : "kimchy" }
},
"end" : 3
}
}
}
The match clause can be any other span type query. The end controls
the maximum end position permitted in a match.