강의
SQL로 하는 탐색적 데이터 분석
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업데이트됨 2026. 1.
SQLExploratory Data Analysis4시간16 동영상57 연습 문제4,650 XP180K+성취 증명서
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선수 조건
Data Manipulation in SQL1
What's in the Database?
Start exploring a database by identifying the tables and the foreign keys that link them. Look for missing values, count the number of observations, and join tables to understand how they're related. Learn about coalescing and casting data along the way.
2
Summarizing and Aggregating Numeric Data
You'll build on functions like min and max to summarize numeric data in new ways. Add average, variance, correlation, and percentile functions to your toolkit, and learn how to truncate and round numeric values too. Build complex queries and save your results by creating temporary tables.
3
Exploring Categorical Data and Unstructured Text
Text, or character, data can get messy, but you'll learn how to deal with inconsistencies in case, spacing, and delimiters.
Learn how to use a temporary table to recode messy categorical data to standardized values you can count and aggregate. Extract new variables from unstructured text as you explore help requests submitted to the city of Evanston, IL.
4
Working with Dates and Timestamps
What time is it? In this chapter, you'll learn how to find out. You'll aggregate date/time data by hour, day, month, or year and practice both constructing time series and finding gaps in them.
SQL로 하는 탐색적 데이터 분석
강의 완료
19백만 명 이상의 학습자와 함께 SQL로 하는 탐색적 데이터 분석을(를) 시작하세요!
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Google에서 계속 진행더 많은 옵션 보기또는
DataCamp for Mobile을 통해 데이터 분석 능력을 향상시키세요.
모바일 강좌와 매일 5분 코딩 챌린지를 통해 이동 중에도 학습 효과를 높이세요.