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es和数据库关系对比
es类比传统关系型数据库: Relational DB -> Databases -> Tables -> Rows -> Columns Elasticsearch -> Indices -> Types -> Documents -> Fields Elasticsearch集群可以包含多个索引 ...
分类:数据库   时间:2019-11-06 10:36:05    阅读次数:81
Elasticsearch
Elasticsearch也是基于Lucene的全文检索库,本质也是存储数据,很多概念与MySQL类似的。 对比关系: 索引(indices) Databases 数据库 ? 类型(type) Table 数据表 ? 文档(Document) Row 行 ? 字段(Field) Columns 列 ...
分类:其他好文   时间:2019-11-04 22:00:49    阅读次数:106
ElasticSearch——常用查询命令
集群相关 --查询集群健康状态 GET _cluster/health --查询所有节点 GET _cat/nodes --查询索引及分片的分布 GET _cat/shards --查询所有插件 GET _cat/plugins 索引相关查询 --查询所有索引及容量 GET _cat/indices ...
分类:其他好文   时间:2019-11-04 15:17:19    阅读次数:95
LeetCode_303. Range Sum Query - Immutable
303. Range Sum Query - Immutable Easy Easy Easy Given an integer array nums, find the sum of the elements between indices i and j (i ≤ j), inclusive. ...
分类:其他好文   时间:2019-11-03 14:28:45    阅读次数:99
30. Substring with Concatenation of All Words
You are given a string, s, and a list of words, words, that are all of the same length. Find all starting indices of substring(s) in s that is a conca ...
分类:其他好文   时间:2019-10-27 01:14:53    阅读次数:76
303. Range Sum Query - Immutable
Given an integer array nums, find the sum of the elements between indices i and j (i ≤ j), inclusive. Example: Note: You may assume that the array doe ...
分类:其他好文   时间:2019-10-17 12:01:59    阅读次数:83
[LC] 438. Find All Anagrams in a String
Given a string s and a non-empty string p, find all the start indices of p's anagrams in s. Strings consists of lowercase English letters only and the ...
分类:其他好文   时间:2019-10-11 12:49:09    阅读次数:72
LC 1. Two Sum
题目介绍 Given an array of integers, return indices of the two numbers such that they add up to a specific target. You may assume that each input would ha ...
分类:其他好文   时间:2019-09-30 20:15:05    阅读次数:119
ES 基本操作
0.查看集群是否健康GET /_cluster/health 1.查询所有索引GET /_cat/indices?v 2.查询单个索引的映射GET /index_trans_detail/_mapping 3.删除indexDELETE /index_trans_detail,index_two 4 ...
分类:其他好文   时间:2019-09-26 09:15:35    阅读次数:101
Codeforces 888E:Maximum Subsequence(枚举,二分)
You are given an array a consisting of n integers, and additionally an integer m . You have to choose some sequence of indices $b_1,?b_2,?...,?b_k (1? ...
分类:其他好文   时间:2019-09-22 21:16:43    阅读次数:137
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