1、函数 json_extract():从json中返回想要的字段 用法:json_extract(字段名,$.json字段名) 事例: select id,json_extract(json_value,'$.deptName') as deptName from dept; 1. 结果: 2、函数JSON_CONTAINS():JSON格式数据是否在字段中包含特定对象 用法: JSON_CONTAINS(target, candidate[, path]) 事例:...
正常执行说明全文检索支持 json 数据类型 ,只是上述 SQL 进行了全表扫描,性能较低,执行时间为738毫秒 在这里插入图片描述 创建索引,再次执行SQL查看执行计划create index idx_gin_search_json on user_ini_text using gin(to_tsvector(‘english’,user_name)); create index idx_gin_search_json on user_ini_t...
-- 创建全文搜索配置CREATETEXTSEARCHCONFIGURATION english (COPY=english );ALTERTEXTSEARCHCONFIGURATION englishALTERMAPPINGFORword, hword, hword_partWITHenglish_stem;-- 创建全文搜索索引CREATEINDEXjsonb_search_idxONyour_tableUSINGGIN (to_tsvector('english', your_jsonb_column));-- 执行全文搜索查询SELECT...
Open-source vector similarity search for PostgresStore your vectors with the rest of your data. Supports:exact and approximate nearest neighbor search single-precision, half-precision, binary, and sparse vectors L2 distance, inner product, cosine distance, L1 distance, Hamming distance, and Jaccard ...
文本搜索类型(text search types) JSON 类型(JSON types) 数组类型(Array types) 组合类型(Composite types) 范围类型(range types) 领域类型(domain types) 长文预警--- 整数类型(integer types) integer,4字节,应该成为数字类型的首选,例如存储金额,可以以分为单位存储 smallint,2字节,更节省磁盘空间 bigint,8...
GIN:GIN 代表广义倒排索引(generalized inverted indexes),主要用于单个字段中包含多个值的数据,例如 hstore、 array、 jsonb 以及 range 数据类型。一个倒排索引为每个元素值都创建一个单独的索引项,可以有效地查询某个特定元素值是否存在。Google、百度这种搜索引擎利用的就是倒排索引。
{"key":"Wogg","name":"弹幕┃玩偶","type":3,"api":"csp_Wogg","quickSearch":1, "changeable":1, "filterable":1, "timeout":60, "ext":"http://127.0.0.1:9978/file/TV/token.json$$$https://www.wogg.xyz/$$$null$$$1$$$./wogg.json","jar":"./jar/pg.jar;md5;8ac13fa2b75a...
JSON Inet/MacAddr text Search postgis Geometry Currently supported pg features: inherits composite type (basic) aggregate functions window functions Large Object Pg_trgm ** Tested on PostgreSQL 11/12/13/14 with Slick 3.5.1. ** Java 8+ is required (except for play-json addon, which requires...
需要注意的是,需要先set search_path 把各个schema都拼起来,不然可能遇到sql提示找不到某个sequence的情况。 有了上面的sql后,就可以用程序包装下,加到巡检平台里,大致代码如下: 代码语言:python 代码运行次数:0 复制 Cloud Studio代码运行 # coding=utf-8importjsonimportosimportsysimportpsycopg2importrequestsfromdi...
You can also set the default search_path for the PostgreSQL user you are using to connect to the destination database by using: ALTER ROLE username SET search_path TO user_schema, public; in this case you don't have to set PG_SCHEMA. SYSUSERS Without explicit schema, Ora2Pg will export...