#learn to code sql

[codingquill]

SQL Fundamentals #1: SQL Data Definition

Last year in college , I had the opportunity to dive deep into SQL. The course was made even more exciting by an amazing instructor . Fast forward to today, and I regularly use SQL in my backend development work with PHP. Today, I felt the need to refresh my SQL knowledge a bit, and that's why I've put together three posts aimed at helping beginners grasp the fundamentals of SQL.

Understanding Relational Databases

Let's Begin with the Basics: What Is a Database?

Simply put, a database is like a digital warehouse where you store large amounts of data. When you work on projects that involve data, you need a place to keep that data organized and accessible, and that's where databases come into play.

Exploring Different Types of Databases

When it comes to databases, there are two primary types to consider: relational and non-relational.

Relational Databases: Structured Like Tables

Think of a relational database as a collection of neatly organized tables, somewhat like rows and columns in an Excel spreadsheet. Each table represents a specific type of information, and these tables are interconnected through shared attributes. It's similar to a well-organized library catalog where you can find books by author, title, or genre.

Key Points:

Tables with rows and columns.

Data is neatly structured, much like a library catalog.

You use a structured query language (SQL) to interact with it.

Ideal for handling structured data with complex relationships.

Non-Relational Databases: Flexibility in Containers

Now, imagine a non-relational database as a collection of flexible containers, more like bins or boxes. Each container holds data, but they don't have to adhere to a fixed format. It's like managing a diverse collection of items in various boxes without strict rules. This flexibility is incredibly useful when dealing with unstructured or rapidly changing data, like social media posts or sensor readings.

Key Points:

Data can be stored in diverse formats.

There's no rigid structure; adaptability is the name of the game.

Non-relational databases (often called NoSQL databases) are commonly used.

Ideal for handling unstructured or dynamic data.

Now, Let's Dive into SQL:

SQL is a :

Data Definition language ( what todays post is all about )

Data Manipulation language

Data Query language

Task: Building and Interacting with a Bookstore Database

Setting Up the Database

Our first step in creating a bookstore database is to establish it. You can achieve this with a straightforward SQL command:

CREATE DATABASE bookstoreDB;

SQL Data Definition

As the name suggests, this step is all about defining your tables. By the end of this phase, your database and the tables within it are created and ready for action.

1 - Introducing the 'Books' Table

A bookstore is all about its collection of books, so our 'bookstoreDB' needs a place to store them. We'll call this place the 'books' table. Here's how you create it:

CREATE TABLE books ( -- Don't worry, we'll fill this in soon! );

Now, each book has its own set of unique details, including titles, authors, genres, publication years, and prices. These details will become the columns in our 'books' table, ensuring that every book can be fully described.

Now that we have the plan, let's create our 'books' table with all these attributes:

CREATE TABLE books ( title VARCHAR(40), author VARCHAR(40), genre VARCHAR(40), publishedYear DATE, price INT(10) );

With this structure in place, our bookstore database is ready to house a world of books.

2 - Making Changes to the Table

Sometimes, you might need to modify a table you've created in your database. Whether it's correcting an error during table creation, renaming the table, or adding/removing columns, these changes are made using the 'ALTER TABLE' command.

For instance, if you want to rename your 'books' table:

ALTER TABLE books RENAME TO books_table;

If you want to add a new column:

ALTER TABLE books ADD COLUMN description VARCHAR(100);

Or, if you need to delete a column:

ALTER TABLE books DROP COLUMN title;

3 - Dropping the Table

Finally, if you ever want to remove a table you've created in your database, you can do so using the 'DROP TABLE' command:

DROP TABLE books;

To keep this post concise, our next post will delve into the second step, which involves data manipulation. Once our bookstore database is up and running with its tables, we'll explore how to modify and enrich it with new information and data. Stay tuned ...

Part2

[dkettchen]

I'm applying to coding bootcamps (in my retraining efforts toward a stable career to fall back on whenever media industry is being an ass (aka their default state)) and this one is making me learn javascript as part of the application process, and I'm like just let me use my snake_case, you monsters ToT

[girlfriendsofthegalaxy]

i am going to take a shower and i am going to get into bed and i am going to read my book and i will stop fucking thinking for five minutes and fall the fuck asleep

[crackaddict55]

To do 9-24-23

I’ll study for 6 hours today 🧍

Mostly going to focus on interview practice and SQL.

[turtle-programming]

My certificate from SoloLearn ...

Topics: Data Programming with SQL & Python

Post #59: SoloLearn, Data Programming, SQL and Python Tutorial, 2025.

[education43]

What Are the Qualifications for a Data Scientist?

In today's data-driven world, the role of a data scientist has become one of the most coveted career paths. With businesses relying on data for decision-making, understanding customer behavior, and improving products, the demand for skilled professionals who can analyze, interpret, and extract value from data is at an all-time high. If you're wondering what qualifications are needed to become a successful data scientist, how DataCouncil can help you get there, and why a data science course in Pune is a great option, this blog has the answers.

The Key Qualifications for a Data Scientist

To succeed as a data scientist, a mix of technical skills, education, and hands-on experience is essential. Here are the core qualifications required:

1. Educational Background

A strong foundation in mathematics, statistics, or computer science is typically expected. Most data scientists hold at least a bachelor’s degree in one of these fields, with many pursuing higher education such as a master's or a Ph.D. A data science course in Pune with DataCouncil can bridge this gap, offering the academic and practical knowledge required for a strong start in the industry.

2. Proficiency in Programming Languages

Programming is at the heart of data science. You need to be comfortable with languages like Python, R, and SQL, which are widely used for data analysis, machine learning, and database management. A comprehensive data science course in Pune will teach these programming skills from scratch, ensuring you become proficient in coding for data science tasks.

3. Understanding of Machine Learning

Data scientists must have a solid grasp of machine learning techniques and algorithms such as regression, clustering, and decision trees. By enrolling in a DataCouncil course, you'll learn how to implement machine learning models to analyze data and make predictions, an essential qualification for landing a data science job.

4. Data Wrangling Skills

Raw data is often messy and unstructured, and a good data scientist needs to be adept at cleaning and processing data before it can be analyzed. DataCouncil's data science course in Pune includes practical training in tools like Pandas and Numpy for effective data wrangling, helping you develop a strong skill set in this critical area.

5. Statistical Knowledge

Statistical analysis forms the backbone of data science. Knowledge of probability, hypothesis testing, and statistical modeling allows data scientists to draw meaningful insights from data. A structured data science course in Pune offers the theoretical and practical aspects of statistics required to excel.

6. Communication and Data Visualization Skills

Being able to explain your findings in a clear and concise manner is crucial. Data scientists often need to communicate with non-technical stakeholders, making tools like Tableau, Power BI, and Matplotlib essential for creating insightful visualizations. DataCouncil’s data science course in Pune includes modules on data visualization, which can help you present data in a way that’s easy to understand.

7. Domain Knowledge

Apart from technical skills, understanding the industry you work in is a major asset. Whether it’s healthcare, finance, or e-commerce, knowing how data applies within your industry will set you apart from the competition. DataCouncil's data science course in Pune is designed to offer case studies from multiple industries, helping students gain domain-specific insights.

Why Choose DataCouncil for a Data Science Course in Pune?

If you're looking to build a successful career as a data scientist, enrolling in a data science course in Pune with DataCouncil can be your first step toward reaching your goals. Here’s why DataCouncil is the ideal choice:

Comprehensive Curriculum: The course covers everything from the basics of data science to advanced machine learning techniques.

Hands-On Projects: You'll work on real-world projects that mimic the challenges faced by data scientists in various industries.

Experienced Faculty: Learn from industry professionals who have years of experience in data science and analytics.

100% Placement Support: DataCouncil provides job assistance to help you land a data science job in Pune or anywhere else, making it a great investment in your future.

Flexible Learning Options: With both weekday and weekend batches, DataCouncil ensures that you can learn at your own pace without compromising your current commitments.

Conclusion

Becoming a data scientist requires a combination of technical expertise, analytical skills, and industry knowledge. By enrolling in a data science course in Pune with DataCouncil, you can gain all the qualifications you need to thrive in this exciting field. Whether you're a fresher looking to start your career or a professional wanting to upskill, this course will equip you with the knowledge, skills, and practical experience to succeed as a data scientist.

Explore DataCouncil’s offerings today and take the first step toward unlocking a rewarding career in data science! Looking for the best data science course in Pune? DataCouncil offers comprehensive data science classes in Pune, designed to equip you with the skills to excel in this booming field. Our data science course in Pune covers everything from data analysis to machine learning, with competitive data science course fees in Pune. We provide job-oriented programs, making us the best institute for data science in Pune with placement support. Explore online data science training in Pune and take your career to new heights!

[a-curious-studyblr]

11/7/24 - I've not got a computer sciences background (I'm a biologist!), but I've been learning the bare basics of SQL for a few days. I've applied to two data tech/analyst apprenticeships so I'm trying to get the basics and prep for interviews like this

[python-programming-language]

MIMO - My SQL Certificate ...

Post #94: MIMO, Learn To Code, My SQL Certificate, 2023.

[dodgebolts]

the only thing keeping me up to do my homework are the Horrors I am expecting to come out of the clips from tonight's droncert

[borealing]

"learn to code" as advice is such bullshit. i have learned and used four and a half different coding languages through my career (html/css, java, python+sql, c++) and when i say used i mean I've built things in every one but the things that i actually used these languages for??? these earn zero money (with the caveat of until you have seniority in, e.g. front end web dev) what people really mean when they say learn coding is "learn to code. go into investment banking or finance startups." coding does not inherently have money in it. my absolute favourite part of coding? my peak enjoyment? was when i was developing for a visual coding language (you put it together like a flowchart, so say youre using a temperature sensor and you want it to log the temperature once every four hours, you can put the blocks together to make it do that. i was writing the code behind the blocks for new sensors) and i was earning £24k a year and that wasn't even part of my main role. it was an extra voluntary thing i was doing (i was working as a research assistant in biosensors - sort of - at a university, and was developing the visual code for students who didnt want to learn c++) like. i want people to learn to code, i want people to know how their electrical equipment works and how coding works, but dont believe the myth that there is inherently money in coding. the valuable things, the things people are passionate about are still vulnerable to the passion tax (if you want to do it you dont have to be paid for it). skills arent where the money is, money is where the money is.

[small-basic-programming]

My 365 Days Streak at MIMO ...

"At Mimo, we believe that coding can open doors to opportunities like few other skills. That's why we've rallied around the purpose of making coding accessible to as many people as possible." MIMO

Today I completed my 365 day streak at Mimo. Phew, that was a long way through the programming and scripting languages “Python”, “SQL”, “HTML”, “CSS” and “JavaScript”.

Even though there were sometimes tough times and I often repeated certain course sections, e.g. with "JavaScript", and the progress wasn't immediately apparent, I still enjoyed learning with MIMO again and again.

The support is also good, if you have questions or just get stuck. I can recommend MIMO to anyone who wants to immerse themselves in the world of programming languages online or with the app.

Post #209: Whoopee! My 365 Day streak on Mimo happens today on March 3, 2024.

[235uranium]

hc that the reason ford is so terrible with earth computers despite almost certainly having encountered more recent technology + technology based on current era technology while in the multiverse is that he's gotten way too familiar with alien computers and keeps trying to make normal computers work that way

[joneswebgoods]

Learn SQL Easy

If you're interested in learning SQL (Structured Query Language), the standard database access language, try learning from a place called SQL Easy. They provide a great self-learning environment where you can learn this language or troubleshoot how to code something.

I'm still learning SQL, even after using it for a few years. I came here looking for a code to pull records within a 7-day span and used this page here: https://www.sql-easy.com/learn/how-to-get-last-7-days-record-in-postgresql/

[turtle-programming]

My 1 Year Streak At MIMO ...

Seit einem Jahr lerne ich neben Small (Visual) Basic und Logo auch noch verschiedene andere Programmier- und Scriptsprachen mit MIMO.

In addition to Small (Visual) Basic and Logo, I have also been learning various other programming and scripting languages ​​with MIMO for a year.

Momentan befasse ich mich intensiv mit der Programmiersprache "JavaScript". Die fortgeschrittenen Programmiertechniken sind etwas anspruchsvoll wie z.B. die Array-Operationen.

At the moment I'm working intensively with the programming language "JavaScript". The advanced programming techniques are a bit demanding such as the array operations.

Post #22: Mimo, My 365 day streak at Mimo, 2024.