🔥ENTER VIP FOR FREE! ENTRY 24 HOURS FREE!

LISA TRADER - most successful trader for 2024. A week ago they finished a marathon in their vip channel where from $100 they made $2000, in just two weeks of time!

Entry to her channel cost : $1500 FOR 24 ENTRY FREE!

JOIN THE VIP CHANNEL NOW!
JOIN THE VIP CHANNEL NOW!
JOIN THE VIP CHANNEL NOW!

𝗦𝗤𝗟 𝗝𝗼𝗶𝗻𝘀 𝗖𝗵𝗲𝗮𝘁𝘀𝗵𝗲𝗲𝘁 - 𝗙𝘂𝗹𝗹𝘆 𝗘𝘅𝗽𝗹𝗮𝗶𝗻𝗲𝗱

𝗪𝗵𝘆 𝗷𝗼𝗶𝗻𝘀 𝗺𝗮𝘁𝘁𝗲𝗿?
Joins let you combine data from multiple tables to extract meaningful insights.
Every serious data analyst or backend dev should master these.

Let’s break them down with clarity:

𝗜𝗡𝗡𝗘𝗥 𝗝𝗢𝗜𝗡
→ Returns only the rows with matching keys in both tables
→ Think of it as intersection
𝗘𝘅𝗮𝗺𝗽𝗹𝗲:
Customers who have placed at least one order

SELECT *
FROM Customers
INNER JOIN Orders
ON Customers.ID = Orders.CustomerID;

𝗟𝗘𝗙𝗧 𝗝𝗢𝗜𝗡 (𝗢𝗨𝗧𝗘𝗥)
→ Returns all rows from the left table + matching rows from the right
→ If no match, right side = NULL
𝗘𝘅𝗮𝗺𝗽𝗹𝗲:
List all customers, even if they’ve never ordered

SELECT *
FROM Customers
LEFT JOIN Orders
ON Customers.ID = Orders.CustomerID;

𝗥𝗜𝗚𝗛𝗧 𝗝𝗢𝗜𝗡 (𝗢𝗨𝗧𝗘𝗥)
→ Returns all rows from the right table + matching rows from the left
→ Rarely used, but similar logic
𝗘𝘅𝗮𝗺𝗽𝗹𝗲:
All orders, even from unknown or deleted customers

SELECT *
FROM Customers
RIGHT JOIN Orders
ON Customers.ID = Orders.CustomerID;

𝗙𝗨𝗟𝗟 𝗢𝗨𝗧𝗘𝗥 𝗝𝗢𝗜𝗡
→ Returns all records when there’s a match in either table
→ Unmatched rows = NULLs
𝗘𝘅𝗮𝗺𝗽𝗹𝗲:
Show all customers and all orders, whether matched or not

SELECT *
FROM Customers
FULL OUTER JOIN Orders
ON Customers.ID = Orders.CustomerID;

𝗖𝗥𝗢𝗦𝗦 𝗝𝗢𝗜𝗡
→ Returns Cartesian product (all combinations)
→ Use with care. 1,000 x 1,000 rows = 1,000,000 results!
𝗘𝘅𝗮𝗺𝗽𝗹𝗲:
Show all possible product and supplier pairings

SELECT *
FROM Products
CROSS JOIN Suppliers;

𝗦𝗘𝗟𝗙 𝗝𝗢𝗜𝗡
→ Join a table to itself
→ Used for hierarchical data like employees & managers
𝗘𝘅𝗮𝗺𝗽𝗹𝗲:
Find each employee’s manager

SELECT A.Name AS Employee, B.Name AS Manager
FROM Employees A
JOIN Employees B
ON A.ManagerID = B.ID;

𝗕𝗲𝘀𝘁 𝗣𝗿𝗮𝗰𝘁𝗶𝗰𝗲𝘀
→ Always use aliases (A, B) to simplify joins
→ Use JOIN ON instead of WHERE for better clarity
→ Test each join with LIMIT first to avoid surprises

---

🎁❗️TODAY FREE❗️🎁

Entry to our VIP channel is completely free today. Tomorrow it will cost $500! 🔥

JOIN 👇

https://t.iss.one/+VKT2Gy3kE6A4NTE5
https://t.iss.one/+VKT2Gy3kE6A4NTE5
https://t.iss.one/+VKT2Gy3kE6A4NTE5

Here’s what helped me succeed:

✔️ Learning about RANK vs. DENSE_RANK.

✔️ Practicing JOINs ➟ Inner, Left, Right, Full.

✔️ Understanding DELETE vs. TRUNCATE.

✔️ Exploring Primary Key vs. Unique Key.

✔️ Mastering ACID properties for data reliability.

✔️ Writing efficient queries with Indexes.

✔️ Using Subqueries for complex operations.

✔️ Understanding the difference between OLTP and OLAP.

🔗 Our Telegram channels: https://t.iss.one/addlist/0f6vfFbEMdAwODBk

📱 Our WhatsApp channel: https://whatsapp.com/channel/0029VaC7Weq29753hpcggW2A

🪙 +30.560$ with 300$ in a month of trading! We can teach you how to earn! FREE!

It was a challenge - a marathon 300$ to 30.000$ on trading, together with Lisa!

What is the essence of earning?: "Analyze and open a deal on the exchange, knowing where the currency rate will go. Lisa trades every day and posts signals on her channel for free."

🔹Start: $150
🔹 Goal: $20,000
🔹Period: 1.5 months.

Join and get started, there will be no second chance👇

https://t.iss.one/+HjHm7mxR5xllNTY5

🔥 Accelerate Your IT Career with FREE Certification Kits!
🚀 Get Hired Faster—Zero Cost!
Grab expert guides, labs, and courses for AWS, Azure, AI, Python, Cyber Security, and beyond—100% FREE, no hidden fees!
✅ CLICK your field👇
✅ DOWNLOAD & dominate your goals!
🔗 AWS + Azure Cloud Mastery: https://bit.ly/44S0dNS
🔗 AI & Machine Learning Starter Kit: https://bit.ly/3FrKw5H
🔗 Python, Excel, Cyber Security Courses: https://bit.ly/4mFrA4g
📘 FREE Career Hack: IT Success Roadmap E-book ➔ https://bit.ly/3Z6JS49

🚨 Limited Time! Act FAST!
📱 Join Our IT Study Group: https://bit.ly/43piMq8
💬 1-on-1 Exam Help: https://wa.link/sbpp0m
Your dream job won’t wait—GRAB YOUR RESOURCES NOW! 💻✨

🙏💸 500$ FOR THE FIRST 500 WHO JOIN THE CHANNEL! 🙏💸

Join our channel today for free! Tomorrow it will cost 500$!

https://t.iss.one/+Y4vkzbTTshVhYTQ1

You can join at this link! 👆👇

https://t.iss.one/+Y4vkzbTTshVhYTQ1

More info @EVLFDEVOFFICIAL

🔓 PRIVATE CHANNEL now OPEN
+$154.382 per day raised by Jack subs⚡️

👉 https://t.iss.one/+qRKP9TmigCwxM2Iy

Don’t miss signals and start make money 🔥

❗️ WITH JAY MO YOU WILL START EARNING MONEY

Jay will leave a link with free entry to a channel that draws money every day. Each subscriber gets between $100 and $5,000.

👉🏻CLICK HERE TO JOIN THE CHANNEL 👈🏻
👉🏻CLICK HERE TO JOIN THE CHANNEL!👈🏻
👉🏻CLICK HERE TO JOIN THE CHANNEL 👈🏻

🚨FREE FOR THE FIRST 500 SUBSCRIBERS ONLY!

Intent | AI-Enhanced Telegram
🌐 Supports real-time translation in 86 languages
💬 Simply swipe up during chat to let AI automatically generate contextual replies
🎙 Instant AI enhanced voice-to-text conversion
🧠 Built-in mainstream models including GPT-4o, Claude 3.7, Gemini 2, Deepseek, etc., activated with one click
🎁 Currently offering generous free AI credits
📱 Supports Android & iOS systems
🔎 Website | 📬 Download

🚀 FREE IT Study Kits for 2025 — Grab Yours Now!

Just found these zero-cost resources from SPOTO👇
Perfect if you're prepping for #Cisco, #AWS, #PMP, #AI, #Python, #Excel, or #Cybersecurity!
✅ 100% Free
✅ No signup traps
✅ Instantly downloadable

📘 IT Certs E-book: https://bit.ly/4fJSoLP
☁️ Cloud & AI Kits: https://bit.ly/3F3lc5B
📊 Cybersecurity, Python & Excel: https://bit.ly/4mFrA4g
🧠 Skill Test (Free!): https://bit.ly/3PoKH39
Tag a friend & level up together 💪

🌐 Join the IT Study Group: https://chat.whatsapp.com/E3Vkxa19HPO9ZVkWslBO8s
📲 1-on-1 Exam Help: https://wa.link/k0vy3x
👑Last 24 HOURS to grab Mid-Year Mega Sale prices！Don’t miss Lucky Draw👇
https://bit.ly/43VgcbT