Using SQL String Functions to Clean Data from Coursera

By the end of this 2-hour long project, you will understand why you need to learn about string functions and use them to get the desired result you want from tables in a database. Also, for this hands-on project, we will use PostgreSQL as our preferred database management system (DBMS). Therefore, to complete this project, it is required that you have prior experience with using PostgreSQL. Similarly, this project is an advanced SQL concept; so, a good foundation for writing SQL queries is vital to complete this project.

If you are not familiar with SQL and want to learn the basics, start with my previous guided projects titled “Performing Data definition and Manipulation in SQL" and “Querying Databases using SQL SELECT statement.” I taught these guided projects using PostgreSQL. Taking these projects will give the needed requisite to complete this project Using SQL String Functions to Clean Data. However, if you are comfortable writing queries in PostgreSQL, please join me on this wonderful ride! Let’s get our hands dirty!

What's inside

Syllabus

Project Overview

Welcome to this project-based course on Using SQL String Functions to Clean Data. In this project, you will learn how to perform data cleaning and manipulation using SQL string functions like LENGTH, UPPER & LOWER, REPLACE, TRIM, SUBSTRING, CONCAT, STRING_AGG, and COALESCE. By the end of this 2-hour long project, you will understand why you need to learn about string functions and use them to get the desired result you want from tables in a database. Also, for this hands-on project, we will use PostgreSQL as our preferred database management system (DBMS). Therefore, to complete this project, it is required that you have prior experience with using PostgreSQL. Similarly, this project is an advanced SQL concept; so, a good foundation for writing SQL queries is vital to complete this project. If you are not familiar with SQL and want to learn the basics, start with my previous guided projects titled “Performing Data definition and Manipulation in SQL" and “Querying Databases using SQL SELECT statement.” I taught these guided projects using PostgreSQL. Taking these projects will give the needed requisite to complete this project Using SQL String Functions to Clean Data. However, if you are comfortable writing queries in PostgreSQL, please join me on this wonderful ride! Let’s get our hands dirty!

Good to know

Know what's good

, what to watch for

, and possible dealbreakers

Suitable for learners familiar with PostgreSQL and basic SQL queries

Specifically designed for those who want to master SQL string functions for data cleaning

Assumes familiarity with PostgreSQL and data management systems

Useful for individuals seeking to enhance their data cleaning skills

Provides hands-on practice with PostgreSQL

Reviews summary

Beginner friendly data cleaning course

Learners say this beginner-friendly PostgreSQL course has engaging assignments but difficult exams. Although not for intermediate learners, it is well received by beginners. Key features include readings, lectures, homework assignments, quizzes, exams, deadlines, and a certificate.

Course has clear, engaging assignments.

"TOO GOOD"

Course is beginner friendly.

"If you are at Beginner level, then it is a worthwhile course for you as it is very simple."

"This course is Beginner level, however, it was advertised as 'Advanced' level."

Course is not suitable for intermediate learners.

"If you are Intermediate, it might be an okay refresher, but you definitely won't learn anything."

"Intermediate level SQL courses on Coursera are far more advanced than this, so it has been significantly misclassified and is not worth the money for anyone other than a beginner."

Exams have difficult and tricky questions.

"The instructor was a bit hard to understand at times and the test had trick questions in there that made me miss the wording and have to retry."

Career center

Learners who complete Using SQL String Functions to Clean Data will develop knowledge and skills that may be useful to these careers:

Data Analyst

A Data Analyst is responsible for collecting, cleaning, and analyzing data to identify trends and patterns. The course on Using SQL String Functions to Clean Data would be particularly useful for a Data Analyst, as it would provide them with the skills and knowledge necessary to effectively clean and manipulate data. This course would help a Data Analyst to improve the quality of their data analysis and to gain insights from data that would otherwise be difficult to obtain.

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Data Engineer

A Data Engineer is responsible for designing, building, and maintaining data systems. The course on Using SQL String Functions to Clean Data would be particularly useful for a Data Engineer, as it would provide them with the skills and knowledge necessary to effectively clean and manipulate data. This course would help a Data Engineer to improve the quality of their data systems and to ensure that data is accurate and consistent.

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Database Administrator

A Database Administrator is responsible for managing and maintaining databases. The course on Using SQL String Functions to Clean Data would be particularly useful for a Database Administrator, as it would provide them with the skills and knowledge necessary to effectively clean and manipulate data. This course would help a Database Administrator to improve the performance of their databases and to ensure that data is secure and reliable.

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Data Scientist

A Data Scientist is responsible for using data to solve business problems. The course on Using SQL String Functions to Clean Data would be particularly useful for a Data Scientist, as it would provide them with the skills and knowledge necessary to effectively clean and manipulate data. This course would help a Data Scientist to improve the quality of their data analysis and to gain insights from data that would otherwise be difficult to obtain.

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Business Analyst

A Business Analyst is responsible for analyzing business processes and identifying opportunities for improvement. The course on Using SQL String Functions to Clean Data may be useful for a Business Analyst, as it would provide them with the skills and knowledge necessary to effectively clean and manipulate data. This course would help a Business Analyst to improve the quality of their business analysis and to gain insights from data that would otherwise be difficult to obtain.

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Software Engineer

A Software Engineer is responsible for designing, developing, and maintaining software applications. The course on Using SQL String Functions to Clean Data may be useful for a Software Engineer, as it would provide them with the skills and knowledge necessary to effectively clean and manipulate data. This course would help a Software Engineer to improve the quality of their software applications and to ensure that data is accurate and consistent.

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Financial Analyst

A Financial Analyst is responsible for analyzing financial data and making investment recommendations. The course on Using SQL String Functions to Clean Data may be useful for a Financial Analyst, as it would provide them with the skills and knowledge necessary to effectively clean and manipulate data. This course would help a Financial Analyst to improve the quality of their financial analysis and to ensure that data is accurate and consistent.

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Product Manager

A Product Manager is responsible for managing the development and launch of new products. The course on Using SQL String Functions to Clean Data may be useful for a Product Manager, as it would provide them with the skills and knowledge necessary to effectively clean and manipulate data. This course would help a Product Manager to improve the quality of their product development and to ensure that data is accurate and consistent.

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Operations Manager

An Operations Manager is responsible for managing the day-to-day operations of a business. The course on Using SQL String Functions to Clean Data may be useful for an Operations Manager, as it would provide them with the skills and knowledge necessary to effectively clean and manipulate data. This course would help an Operations Manager to improve the quality of their operations management and to ensure that data is accurate and consistent.

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Information Technology Manager

An Information Technology Manager is responsible for managing the information technology department of a business. The course on Using SQL String Functions to Clean Data may be useful for an Information Technology Manager, as it would provide them with the skills and knowledge necessary to effectively clean and manipulate data. This course would help an Information Technology Manager to improve the quality of their information technology management and to ensure that data is accurate and consistent.

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Human Resources Manager

A Human Resources Manager is responsible for managing the human resources department of a business. The course on Using SQL String Functions to Clean Data may be useful for a Human Resources Manager, as it would provide them with the skills and knowledge necessary to effectively clean and manipulate data. This course would help a Human Resources Manager to improve the quality of their human resources management and to ensure that data is accurate and consistent.

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Supply Chain Manager

A Supply Chain Manager is responsible for managing the supply chain of a business. The course on Using SQL String Functions to Clean Data may be useful for a Supply Chain Manager, as it would provide them with the skills and knowledge necessary to effectively clean and manipulate data. This course would help a Supply Chain Manager to improve the quality of their supply chain management and to ensure that data is accurate and consistent.

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Marketing Manager

A Marketing Manager is responsible for developing and executing marketing campaigns. The course on Using SQL String Functions to Clean Data may be useful for a Marketing Manager, as it would provide them with the skills and knowledge necessary to effectively clean and manipulate data. This course would help a Marketing Manager to improve the quality of their marketing campaigns and to ensure that data is accurate and consistent.

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Project Manager

A Project Manager is responsible for planning, executing, and closing projects. The course on Using SQL String Functions to Clean Data may be useful for a Project Manager, as it would provide them with the skills and knowledge necessary to effectively clean and manipulate data. This course would help a Project Manager to improve the quality of their project management and to ensure that data is accurate and consistent.

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Sales Manager

A Sales Manager is responsible for managing a team of sales representatives. The course on Using SQL String Functions to Clean Data may be useful for a Sales Manager, as it would provide them with the skills and knowledge necessary to effectively clean and manipulate data. This course would help a Sales Manager to improve the quality of their sales management and to ensure that data is accurate and consistent.

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