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, 鈥減art mathematician, part computer scientist, and part trend spotter鈥� (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.
SQL f眉r Data Science
Gain insight into a topic and learn the fundamentals.
4.3
(29 reviews)
Beginner level
No prior experience required
1 week to complete
at 10 hours a week
Flexible schedule
Learn at your own pace
What you'll learn
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.
Skills you'll gain
Details to know
Shareable certificate
Add to your LinkedIn profile
Assessments
12 assignments
Taught in German
See how employees at top companies are mastering in-demand skills
There are 4 modules in this course
In diesem Modul lernen Sie, SQL zu definieren und zu diskutieren, wie sich SQL von anderen Computersprachen unterscheidet. Sie werden in der Lage sein, die Rollen eines Datenbankadministrators und eines Data Scientist zu vergleichen und die Unterschiede zwischen Eins-zu-eins-, Eins-zu-viele- und Viele-zu-viele-Beziehungen mit Datenbanken zu erkl盲ren. Sie werden in der Lage sein, die SELECT-Anweisung zu verwenden und einige grundlegende Syntaxregeln zu erl盲utern. Sie werden in der Lage sein, Kommentare in Ihren Code einzuf眉gen und dessen Bedeutung zu erfassen.
What's included
11 videos2 readings4 assignments2 discussion prompts
In diesem Modul lernen Sie, mehrere neue Klauseln und Operatoren zu verwenden, darunter WHERE, BETWEEN, IN, OR, NOT, LIKE, ORDER BY und GROUP BY. Sie werden in der Lage sein, die Platzhalterfunktion zu nutzen, um nach spezifischeren Datens盲tzen oder Teilen von Datens盲tzen zu suchen, einschlie脽lich ihrer Vor- und Nachteile, und wie man sie am besten einsetzt. Sie werden in der Lage sein, die Verwendung grundlegender mathematischer Operatoren sowie von Aggregatfunktionen wie AVERAGE, COUNT, MAX, MIN und anderen zu diskutieren, um mit der Analyse unserer Daten zu beginnen.
What's included
9 videos1 reading3 assignments
In diesem Modul lernen Sie, Unterabfragen zu er枚rtern, einschlie脽lich ihrer Vor- und Nachteile und wann sie zu verwenden sind. Sie k枚nnen sich an das Konzept eines Schl眉sselfeldes erinnern und er枚rtern, wie diese uns helfen, Daten mit Verkn眉pfungen zu verkn眉pfen. Sie werden in der Lage sein, verschiedene Arten von Verkn眉pfungen zu identifizieren und zu definieren, darunter die kartesische Verkn眉pfung, die innere Verkn眉pfung, linke und rechte Verkn眉pfungen, vollst盲ndige 盲u脽ere Verkn眉pfungen und die Selbstverkn眉pfung. Sie werden in der Lage sein, Aliase und Pr盲qualifikatoren zu verwenden, um Ihren SQL-Code ordentlicher und effizienter zu gestalten.
What's included
10 videos2 readings3 assignments1 discussion prompt
In diesem Modul werden Sie lernen, wie Sie Zeichenketten durch Verketten, Trimmen, 脛ndern der Gro脽- und Kleinschreibung und die Verwendung der Teilzeichenfolgen-Funktion ver盲ndern k枚nnen. Sie werden in der Lage sein, die Datums- und Uhrzeitzeichenfolgen genau zu besprechen. Sie werden in der Lage sein, Case-Anweisungen zu verwenden und dieses Modul mit einer Diskussion 眉ber Daten-Governance und Profiling abzuschlie脽en. Sie werden auch in der Lage sein, grundlegende Prinzipien bei der Verwendung von SQL f眉r Data Science anzuwenden. Sie werden in der Lage sein, Tipps und Tricks zu nutzen, um SQL in einem Data-Science-Kontext anzuwenden.
What's included
10 videos3 readings2 assignments1 peer review1 discussion prompt
Earn a career certificate
Add this credential to your LinkedIn profile, resume, or CV. Share it on social media and in your performance review.
Instructor
Instructor ratings
4.9 (9 ratings)
Offered by
Explore more from Data Analysis
Status: Free TrialUniversity of California, Davis
Status: Free TrialCorporate Finance Institute
Status: Free TrialUniversity of California, Davis
Status: Free TrialFractal Analytics
Why people choose 糖心vlog官网观看 for their career
Felipe M.
Learner since 2018
"To be able to take courses at my own pace and rhythm has been an amazing experience. I can learn whenever it fits my schedule and mood."
Jennifer J.
Learner since 2020
"I directly applied the concepts and skills I learned from my courses to an exciting new project at work."
Larry W.
Learner since 2021
"When I need courses on topics that my university doesn't offer, 糖心vlog官网观看 is one of the best places to go."
Chaitanya A.
"Learning isn't just about being better at your job: it's so much more than that. 糖心vlog官网观看 allows me to learn without limits."
Open new doors with 糖心vlog官网观看 Plus
Unlimited access to 10,000+ world-class courses, hands-on projects, and job-ready certificate programs - all included in your subscription
Advance your career with an online degree
Earn a degree from world-class universities - 100% online
Join over 3,400 global companies that choose 糖心vlog官网观看 for Business
Upskill your employees to excel in the digital economy
Frequently asked questions
Access to lectures and assignments depends on your type of enrollment. If you take a course in audit mode, you will be able to see most course materials for free. To access graded assignments and to earn a Certificate, you will need to purchase the Certificate experience, during or after your audit. If you don't see the audit option:
The course may not offer an audit option. You can try a Free Trial instead, or apply for Financial Aid.
The course may offer 'Full Course, No Certificate' instead. This option lets you see all course materials, submit required assessments, and get a final grade. This also means that you will not be able to purchase a Certificate experience.
When you purchase a Certificate you get access to all course materials, including graded assignments. Upon completing the course, your electronic Certificate will be added to your Accomplishments page - from there, you can print your Certificate or add it to your LinkedIn profile. If you only want to read and view the course content, you can audit the course for free.
You will be eligible for a full refund until two weeks after your payment date, or (for courses that have just launched) until two weeks after the first session of the course begins, whichever is later. You cannot receive a refund once you鈥檝e earned a Course Certificate, even if you complete the course within the two-week refund period. .
More questions
Financial aid available,