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書封 SQL語法查詢入門:挖掘數據真相,征服大數據時代的第一本書
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SQL語法查詢入門:挖掘數據真相,征服大數據時代的第一本書

Published
2019/04/29
Format
PDF
Category
Subject
ISBN
9789865020989
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SQL是一種用建立、管理和查詢資料庫的程式語言。無論您是分析師、記者或是從事學術研究的研究人員,都可以運用SQL來發掘隱藏在數據中的故事。

本書除了解說SQL以及資料庫的基礎知識之外,還會告訴您如何使用pgAdmin和PostgreSQL資料庫系統來建立、組織和分析真實世界的資料,像是犯罪統計資料或人口普查統計數據,同時也將告訴您如何在資料庫中進行運算,以及排解實際工作過程中常見的障礙。

透過本書,您將了解如何:
.為您的資料定義正確的數據類型
.聚合、排序和過濾數據以查找模式
.識別並清除數據中的任何錯誤
.搜尋有意義數據的文字
.建立進階查詢並自動完成繁瑣的任務

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