A complete setup guide — from conda install to writing SQL queries directly in your notebook.

📦 Step 1 — Install PostgreSQL via Conda

conda install anaconda::postgresql

Note: If you have both Anaconda and local Python installed and want to use your local Python, deactivate conda first:

conda deactivate
pip install ipython-sql --break-system-packages

🔧 Step 2 — Install Required Python Packages

pip install ipython-sql
pip install psycopg2
pip install SQLAlchemy

🚀 Step 3 — Initialize & Start the Server

# Create the data directory
mkdir ~/pgdata

# If it already exists, remove and recreate
rm -rf ~/pgdata

# Initialize the cluster
initdb -D ~/pgdata

# Start the server
pg_ctl -D ~/pgdata -l ~/pgdata/logfile start

Port conflict? If you get pg_ctl: could not start server, your system PostgreSQL is occupying port 5432:

# Stop system postgres
sudo systemctl stop postgresql

# Now start your conda postgres
pg_ctl -D ~/pgdata -l ~/pgdata/logfile start

👤 Step 4 — Create a User & Database

# Create a user (prompted for password)
createuser --interactive --pwprompt myuser

# Create a database owned by that user
createdb --owner myuser mydb

When prompted:

Enter password for new role: ****
Enter it again: ****
Shall the new role be a superuser? (y/n) n
Shall the new role be allowed to create databases? (y/n) y
Shall the new role be allowed to create more new roles? (y/n) n

🪐 Step 5 — Connect in Jupyter Notebook

# Load the ipython-sql extension
%load_ext sql

# Fix PrettyTable KeyError (version compatibility issue)
%config SqlMagic.style = '_DEPRECATED_DEFAULT'

# Connect to your database
try:
    %sql postgresql://myuser:1234@localhost/mydb
    print("✅ Connected to mydb successfully!")
except Exception as e:
    print(f"❌ Connection failed: {e}")

✅ Connected to mydb successfully!

📝 Step 6 — Working with SQL Magic

Check tables

%sql \dt

Create a table

%%sql
CREATE TABLE student_info (
    id      SERIAL PRIMARY KEY,
    name    VARCHAR(100),
    cgpa    DECIMAL(3,2)
);

Insert values

%%sql
INSERT INTO student_info (name, cgpa) VALUES
    ('Hassan', 4.00),
    ('Zaki',   3.85),
    ('Tina',   3.72),
    ('Sara',   3.90),
    ('John',   3.65);

View data

%%sql
SELECT * FROM student_info;

💻 Step 7 — Access from Terminal

# Using psql
psql -U myuser -d mydb

# Using pgcli (host flag required)
pgcli -U myuser -h localhost -d mydb

Useful psql / pgcli commands

♻️ Every Reboot Reminder

# System postgres may auto-start again after reboot
sudo systemctl stop postgresql

# Start your conda postgres
pg_ctl -D ~/pgdata -l ~/pgdata/logfile start

🔭 What's Next?

The same workflow applies to MySQL / MariaDB, SQLite, and NoSQL databases like MongoDB and Redis — just swap the connection string and driver. Next post will cover NoSQL databases in Jupyter.

Python Link: [https://lnkd.in/ehjKM3mB

](https://lnkd.in/ehjKM3mB🎨)🎨 Key Features
Sophisticated Aesthetic: Offers a calm, polished appearance, perfect for professional and academic visualizations.
Rich Color Palette: Integrates the signature Rose Pine color scheme, complemented by customizable accent tones to suit diverse datasets.
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📚 How to Use
Installing and applying the Rose Pine Theme is straightforward, and the result is a visually striking output tailored for high-impact presentations or publications. Here’s a glimpse of the theme in action, showcasing its versatility across different types of data.

🔗 Documentation and Examples

Comprehensive documentation, including implementation guidelines, is available in the GitHub Repository. Check it out to explore usage tips and visual examples.[

](https://lnkd.in/ekTNmS7d💡)💡 Collaborate with Me

Feedback and contributions are highly encouraged! Whether you have suggestions for enhancements or want to contribute directly to the project, feel free to submit a pull request or open an issue on GitHub. Collaboration is the key to growth!

📩 Get in Touch
For any questions, feedback, or collaborative ideas, reach out via my portfolio website or connect with me on GitHub.

🔗 GitHub Repository: Explore the Rose Pine Theme for R

📌 ᴀʀᴇ ʏᴏᴜ ɪɴᴛᴏ ᴅᴀᴛᴀ ꜱᴄɪᴇɴᴄᴇ, ᴀɴᴀʟʏᴛɪᴄꜱ, ᴏʀ ᴠɪꜱᴜᴀʟɪᴢᴀᴛɪᴏɴ? ʟᴇᴛ’ꜱ ᴄᴏɴɴᴇᴄᴛ—ɪ’ᴅ ʟᴏᴠᴇ ᴛᴏ ᴄʜᴀᴛ ᴍᴏʀᴇ ᴀʙᴏᴜᴛ ɪᴛ!