住房和城乡建设委员会官方网站网络公司seo推广
一、题目
为一个索引，按要求设置以下 dynamic Mapping
- 一切 text 类型的字段，类型全部映射成 keyword
- 一切以 int_ 开头命名的字段，类型都设置成 integer
1.1 考点
字段的动态映射
1.2 答案
# 创建索引和索引模板
PUT my_index
{"mappings": {"dynamic_templates": [{"integer": {"match": "int_*","mapping": {"type": "integer"}}},{"text": {"match_mapping_type": "string","mapping": {"type": "keyword"}}}]}
}# 写入数据
POST my_index/_bulk
{"index":{}}
{"text":"天安门广场", "int_value":23}
{"index":{}}
{"cont":"好看的小说", "int_value":50.0}
{"index":{}}
{"cont":"晚上值班很痛苦", "int_value":88.8}检查索引结构
GET my_index/_mapping
二、题目
为 movies 索引设定一个别名，默认查询只返回 score 字段 大于 3 的电影
# 创建索引
PUT movies
{"mappings": {"properties": {"name": {"type": "keyword"},"score": {"type": "float"}}}
}# 写入数据
POST movies/_bulk
{"index":{}}
{"name":"百万雄师过大江","score":5}
{"index":{}}
{"name":"陆小凤传奇","score":4}
{"index":{}}
{"name":"七宗罪","score":3}
{"index":{}}
{"name":"华尔街之狼","score":2.1}
1.1 考点
- 索引别名
1.2 答案
# 建立别名
POST _aliases
{"actions": [{"add": {"index": "movies","alias": "movies_alias","filter": {"bool": {"filter": [{"range": {"score": {"gte": 3}}}]}}}}]
}# 用别名检索
GET movies_alias/_search