• ES 数据类型


    官网数据类型网址

    有价值的参考博客

    本文 Elasticsearch 版本为 7.2

    1. 核心数据类型

    (1)字符串类型: text, keyword

    (2)数字类型:long, integer, short, byte, double, float, half_float, scaled_float

    (3)日期:date

    (4)日期 纳秒:date_nanos

    (5)布尔型:boolean

    (6)Binary:binary

    (7)Range: integer_range, float_range, long_range, double_range, date_range

    2. 复杂数据类型

    (1)Object: object(for single JSON objects)

    (2)Nested: nested (for arrays of JSON objects)

    3. 地理数据类型

    (1)Geo-point: geo_point (for lat/lon points)

    (2)Geo-shape: geo_shape (for complex shapes like polygons)

    4. 特殊数据类型

    (1)IP:  ip (IPv4 和 IPv6 地址)

    (2)Completion类型:completion (to provide auto-complete suggestions)

    (3)Token count:token_count (to count the number of tokens in a string)

    (4)mapper-murmur3:murmur3(to compute hashes of values at index-time and store them in the index)

    (5)mapper-annotated-text:annotated-text (to index text containing special markup (typically used for identifying named entities))

    (6)Percolator:(Accepts queries from the query-dsl)

    (7)Join:(Defines parent/child relation for documents within the same index)

    (8)Alias:(Defines an alias to an existing field.)

    (9)Rank feature:(Record numeric feature to boost hits at query time.)

    (10)Rank features:(Record numeric features to boost hits at query time.)

    (11)Dense vector:(Record dense vectors of float values.)

    (12)Sparse vector:(Record sparse vectors of float values.)

    (13)Search-as-you-type:(A text-like field optimized for queries to implement as-you-type completion)

    5.数组类型

            在Elasticsearch中,数组不需要一个特定的数据类型,任何字段都默认可以包含一个或多个值,当然,这多个值都必须是字段指定的数据类型。

    6.Multi-fields

            Multi-fields 通常用来以不同的方式或目的索引同一个字段。比如,一个字符串类型字段可以同时被映射为 text 类型以用于全文检索、 keyword字段用于排序或聚合。又或者,你可以用standard分析器、english分析器和french分析器来索引同一个 text字段。






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  • 原文地址:https://www.cnblogs.com/betterwgo/p/11571275.html
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