As data collection has increased exponentially, so has the need for people skilled at using and interacting with data; to be able to think critically, and provide insights to make better decisions and optimize their businesses. This is a data scientist, “part mathematician, part computer scientist, and part trend spotter” (SAS Institute, Inc.). According to Glassdoor, being a data scientist is the best job in America; with a median base salary of $110,000 and thousands of job openings at a time. The skills necessary to be a good data scientist include being able to retrieve and work with data, and to do that you need to be well versed in SQL, the standard language for communicating with database systems.
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SQL for Data Science
Dieser Kurs ist Teil von Spezialisierung Learn SQL Basics for Data Science
Dozent: Sadie St. Lawrence
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Bei enthalten
(16,509 Bewertungen)
Was Sie lernen werden
Identify a subset of data needed from a column or set of columns and write a SQL query to limit to those results.
Use SQL commands to filter, sort, and summarize data.
Create an analysis table from multiple queries using the UNION operator.
Manipulate strings, dates, & numeric data using functions to integrate data from different sources into fields with the correct format for analysis.
Kompetenzen, die Sie erwerben
- Kategorie: Data Science
- Kategorie: Data Analysis
- Kategorie: Sqlite
- Kategorie: SQL
Wichtige Details
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14 Aufgaben
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In diesem Kurs gibt es 4 Module
In this module, you will be able to define SQL and discuss how SQL differs from other computer languages. You will be able to compare and contrast the roles of a database administrator and a data scientist, and explain the differences between one-to-one, one-to-many, and many-to-many relationships with databases. You will be able to use the SELECT statement and talk about some basic syntax rules. You will be able to add comments in your code and synthesize its importance.
Das ist alles enthalten
11 Videos3 Lektüren4 Aufgaben2 Diskussionsthemen
In this module, you will be able to use several more new clauses and operators including WHERE, BETWEEN, IN, OR, NOT, LIKE, ORDER BY, and GROUP BY. You will be able to use the wildcard function to search for more specific or parts of records, including their advantages and disadvantages, and how best to use them. You will be able to discuss how to use basic math operators, as well as aggregate functions like AVERAGE, COUNT, MAX, MIN, and others to begin analyzing our data.
Das ist alles enthalten
9 Videos1 Lektüre3 Aufgaben
In this module, you will be able to discuss subqueries, including their advantages and disadvantages, and when to use them. You will be able to recall the concept of a key field and discuss how these help us link data together with JOINs. You will be able to identify and define several types of JOINs, including the Cartesian join, an inner join, left and right joins, full outer joins, and a self join. You will be able to use aliases and pre-qualifiers to make your SQL code cleaner and efficient.
Das ist alles enthalten
10 Videos2 Lektüren3 Aufgaben1 Diskussionsthema
In this module, you will be able to discuss how to modify strings by concatenating, trimming, changing the case, and using the substring function. You will be able to discuss the date and time strings specifically. You will be able to use case statements and finish this module by discussing data governance and profiling. You will also be able to apply fundamental principles when using SQL for data science. You'll be able to use tips and tricks to apply SQL in a data science context.
Das ist alles enthalten
11 Videos3 Lektüren4 Aufgaben1 Diskussionsthema
Dozent
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- Status: [object Object]
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Geprüft am 23. Sep. 2020
Geprüft am 22. Aug. 2021
Geprüft am 5. Okt. 2022
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