原文地址: https://www.elastic.co/guide/en/elasticsearch/reference/7.7/sql-rest-filtering.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.
Filtering using Elasticsearch query DSLedit
One can filter the results that SQL will run on using a standard Elasticsearch query DSL by specifying the query in the filter parameter.
POST /_sql?format=txt
{
"query": "SELECT * FROM library ORDER BY page_count DESC",
"filter": {
"range": {
"page_count": {
"gte" : 100,
"lte" : 200
}
}
},
"fetch_size": 5
}
Which returns:
author | name | page_count | release_date ---------------+------------------------------------+---------------+------------------------ Douglas Adams |The Hitchhiker's Guide to the Galaxy|180 |1979-10-12T00:00:00.000Z
A useful and less obvious usage for standard query DSL filtering is to search documents by a specific routing key.
Because Elasticsearch SQL does not support a routing parameter, one can specify a terms filter for the _routing field instead:
POST /_sql?format=txt
{
"query": "SELECT * FROM library",
"filter": {
"terms": {
"_routing": ["abc"]
}
}
}