我经过实际测试es5.2.2,发现_source/_all特性很好用:
1. _source可用通过配置includes、excludes获取应用需要的field
"_source": {
"enabled": true,
"includes": [
"comId",
"name",
"userName",
"equips.name",
"equips.amount"
],
"excludes": [
"phone",
"equips.code"
]
},
2.设置enabled=false关闭_source功能,关闭后,查询结果只返回doc的ID,而不会返回_source
"_source": {
"enabled": false,
3._all、include_in_all结合使用,是用户可用通过_all分词查询多个字段,而不需要写多个查询条件
"mappings": {
"testdoc03": {
"_all": {
"enabled": true
},
"_source": {
"enabled": false,
"includes": [
"comId",
"name",
"userName",
"equips.name",
"equips.amount"
],
"excludes": [
"phone",
"equips.code"
]
},
"properties": {
"comId": {
"type": "long"
},
"equips": {
"properties": {
"amount": {
"type": "double",
"include_in_all": true
},
"code": {
"type": "text"
},
"name": {
"type": "text",
"include_in_all": true
}
}
},
"name": {
"type": "text",
"include_in_all": true
},
"phone": {
"type": "keyword"
},
"userName": {
"type": "text",
"include_in_all": true
}
}
}
}
}
1. _source可用通过配置includes、excludes获取应用需要的field
"_source": {
"enabled": true,
"includes": [
"comId",
"name",
"userName",
"equips.name",
"equips.amount"
],
"excludes": [
"phone",
"equips.code"
]
},
2.设置enabled=false关闭_source功能,关闭后,查询结果只返回doc的ID,而不会返回_source
"_source": {
"enabled": false,
3._all、include_in_all结合使用,是用户可用通过_all分词查询多个字段,而不需要写多个查询条件
"mappings": {
"testdoc03": {
"_all": {
"enabled": true
},
"_source": {
"enabled": false,
"includes": [
"comId",
"name",
"userName",
"equips.name",
"equips.amount"
],
"excludes": [
"phone",
"equips.code"
]
},
"properties": {
"comId": {
"type": "long"
},
"equips": {
"properties": {
"amount": {
"type": "double",
"include_in_all": true
},
"code": {
"type": "text"
},
"name": {
"type": "text",
"include_in_all": true
}
}
},
"name": {
"type": "text",
"include_in_all": true
},
"phone": {
"type": "keyword"
},
"userName": {
"type": "text",
"include_in_all": true
}
}
}
}
}
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本文地址:http://searchkit.cn/article/160
本文地址:http://searchkit.cn/article/160
3 个评论
启用_all,在索引文档的时候性能会受到一定程度的影响吧
是的,会消耗更多内存,如果实际应用中能够容忍,是一个很好的选择;我的项目中就使用了_all;
一句话,根据自身的业务需求,要有取舍
一句话,根据自身的业务需求,要有取舍
你将需要被搜索的都放到 _all 中,那不是所有的字段都是一样的权重了!