ElasticSearch(7.2.2)-es之查询建议

查询建议

• 查询建议，是为了给⽤户提供更好的搜索体验。包括：词条检查，⾃动补全。
• 词条检查

• 自动补全

Suggester

• Term suggester
• Phrase suggester
• Completion suggester

字段

Term suggester

• term 词条建议器，对给输⼊的⽂本进⾏分词，为每个分词提供词项建议

POST /nba_latest/_search
{
	"suggest": {
		"my-suggestion": {
			"text": "jamse hardne",
			"term": {
				"suggest_mode": "missing",
				"field": "displayNameEn"
			}
		}
	}
}

Phrase suggester

• phrase 短语建议，在term的基础上，会考量多个term之间的关系，⽐如是否同时出现在索引的原⽂⾥，相邻程度，以及词频等

POST /nba_latest/_search
{
	"suggest": {
		"my-suggestion": {
			"text": "jamse harden",
			"phrase": {
				"field": "displayNameEn"
			}
		}
	}
}

Completion suggester

• Completion 完成建议

POST /nba_latest/_search
{
	"suggest": {
		"my-suggestion": {
			"text": "Miam",
			"completion": {
				"field": "teamCityEn"
			}
		}
	}
}