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      ["modelname"] => NULL
    }
  }
}

PostgreSQL被業(yè)界譽(yù)為“最先進(jìn)的開源數(shù)據(jù)庫”,面向企業(yè)復(fù)雜SQL的OLTP業(yè)務(wù)場(chǎng)景,支持NoSQL數(shù)據(jù)類型(JSON/XML/hstore)、提供阿里云自研Ganos多維多模時(shí)空信息引擎,及PostGIS地理信息引擎。

NoSQL兼容

兼容SQL:2011, 豐富的數(shù)據(jù)類型,直接支持SQL操作JSON及XML

空間/時(shí)空雙引擎

自研Ganos時(shí)空引擎實(shí)現(xiàn)多模型處理能力,支持GPU計(jì)算加速,兼容PostGIS地理信息引擎

高效查詢

基于成本的SQL查詢優(yōu)化器,多表關(guān)聯(lián)查詢性能比MySQL高數(shù)倍

安全穩(wěn)定

SQL審計(jì),身份隔離深入到字段級(jí)別;支持IP白名單防DDoS攻擊


輕松處理空間/時(shí)空信息

支持PostGIS,同時(shí)借助自研Ganos時(shí)空引擎,基于GeoSQL輕松處理多維幾何對(duì)象、遙感影像、激光點(diǎn)云、移動(dòng)對(duì)象軌跡等各類空間/時(shí)空信息。

Ganos 2/3/4維坐標(biāo)

幾何數(shù)據(jù)的坐標(biāo)維數(shù)支持2/3/4(with Z/M),支持基于平面和球面計(jì)算,支持3D計(jì)算,具備高效GIST R-Tree及BRIN索引

Ganos GPU增強(qiáng)

支持多光譜、高光譜影像數(shù)據(jù)以及DEM高程數(shù)據(jù)的導(dǎo)入導(dǎo)出、拼接、剪切、統(tǒng)計(jì)等各類常規(guī)操作,部分函數(shù)支持GPU并行計(jì)算加速(需采購GPU機(jī)型)

Ganos MOD移動(dòng)對(duì)象數(shù)據(jù)庫

具備獨(dú)一無二的移動(dòng)對(duì)象數(shù)據(jù)庫(MOD),支持軌跡構(gòu)造、軌跡信息獲取、軌跡空間/時(shí)空關(guān)系判斷、軌跡空間處理、軌跡時(shí)空統(tǒng)計(jì)等豐富功能

Ganos 高級(jí)功能

激光點(diǎn)云、拓?fù)渚W(wǎng)絡(luò)(路徑)數(shù)據(jù)存儲(chǔ)、查詢、分析等高級(jí)功能

兼容PostGIS

支持PostGIS空間數(shù)據(jù)類型、空間分析函數(shù)、元數(shù)據(jù)及函數(shù)、二元謂詞、空間操作符


強(qiáng)大NoSQL兼容

基于SQL支持JSON、XML、Key-Value等非結(jié)構(gòu)化數(shù)據(jù)類型,實(shí)現(xiàn)另類的Not Only SQL(NOSQL)解決方案

建表時(shí)使用JSON數(shù)據(jù)類型

CREATE TABLE json_tab(id bigint, data jsonb);

直接保存JSON內(nèi)容

INSERT INTO json_tab VALUES (1,'{"pname":"產(chǎn)品1","qty":50}')

直接查詢JSON信息

SELECT * FROM json_tab WHERE data->>'qty' > 30

對(duì)JSON的屬性進(jìn)行索引提高性能

CREATE INDEX idx_json_tab_data_pname ON json_tab USING btree ((data ->> 'pname'));

與現(xiàn)有關(guān)系表進(jìn)行JOIN查詢

SELECT * FROM json_tab JOIN product ON (products.pname=json_data.data->>'pname') WHERE data->>'qty' > 30;


支持全文搜索

通過全文搜索,應(yīng)用將不再需要額外搭建搜索引擎,只通過SQL操作即可實(shí)現(xiàn)全文檢索(Full Text Search)及模糊查詢。

功能豐富

支持中文分詞、自定義詞庫,可對(duì)現(xiàn)有詞庫進(jìn)行智能學(xué)習(xí)處理,持續(xù)優(yōu)化。同時(shí)可以實(shí)現(xiàn):“結(jié)巴分詞”、“相似度分析”、“相似度索引”、“正則匹配”等高級(jí)功能,通過SQL引擎完成整套分詞操作過程,讓用戶免去重復(fù)開發(fā)的煩惱。


支持OSS云存儲(chǔ)擴(kuò)展

基于PostgreSQL的FDW功能,阿里云深度整合優(yōu)化了對(duì)OSS云存儲(chǔ)的外部表管理功能,可以支持2TB以上存儲(chǔ)空間無限擴(kuò)展。

可讀、可寫、空間無限擴(kuò)展

用戶可以通過外部表的方式將OSS云存儲(chǔ)中的CSV格式化文件當(dāng)成本地?cái)?shù)據(jù)表進(jìn)行使用。支持與本地?cái)?shù)據(jù)表進(jìn)行JOIN,支持?jǐn)?shù)據(jù)讀寫,從而也借助OSS的能力,使得數(shù)據(jù)庫的存儲(chǔ)空間可以隨意擴(kuò)展到任意大小,滿足企業(yè)用戶對(duì)冷熱數(shù)據(jù)生命周期管理的需求。OSS存儲(chǔ)外部表功能還支持?jǐn)?shù)據(jù)壓縮,用戶可以使用標(biāo)準(zhǔn)gzip算法進(jìn)行csv文件壓縮,有效縮短數(shù)據(jù)寫入到OSS的時(shí)間,同時(shí)節(jié)省存儲(chǔ)費(fèi)用可達(dá)50%以上。


支持?jǐn)?shù)據(jù)倉庫

通過PostgreSQL除了在高可用方面能夠滿足OLTP在線應(yīng)用的要求外,需要進(jìn)行實(shí)時(shí)分析的數(shù)據(jù),還可以擴(kuò)展支持OLAP數(shù)據(jù)倉庫的業(yè)務(wù)。

OLAP+OLTP=HTAP

在線數(shù)據(jù)庫和數(shù)據(jù)倉庫使用相同的開發(fā)協(xié)議接口,可以幫助中小企業(yè)降低IT研發(fā)成本。當(dāng)TB級(jí)的數(shù)據(jù)需要進(jìn)行分析時(shí),時(shí)可以通過同樣基于PostgreSQL內(nèi)核的“云數(shù)據(jù)庫HybridDB”實(shí)現(xiàn)可橫向擴(kuò)展的OLAP數(shù)據(jù)倉庫,支持總量達(dá)百TB甚至PB級(jí)的數(shù)據(jù)分析BI業(yè)務(wù)。


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