Excel Data Cleaning Using Power Query | Real Company Unclean Data (Step by Step) in 2026

Excel Data Cleaning Using Power Query | Real Company Unclean Data (Step by Step) in 2026

Hi
I am Abhishek Jaiswal. Welcome to our YouTube channel @guideofmad

About this video-
Is video me maine Excel Power Query ka use karke REAL-WORLD unclean data ko step-by-step clean karke dikhaya hai.

Is data me issues the jaise:
✔ Sales = NA / null
✔ Quantity = 0 / null
✔ Discount = negative
✔ Profit blank
✔ Logical errors (Sales 0 but Profit non-zero)

Maine Power Query in Excel me proper business rules apply karke:
✔ Invalid rows remove ki
✔ Discount & Profit clean kiya
✔ Interview-ready clean dataset banaya

Video me maine Power BI ka reference bhi explain kiya hai taaki aap samajh sako:
✔ Excel Power Query aur Power BI Power Query same kaise hote hain
✔ Power BI ke liye Excel Power Query kaise foundation banata hai

📌 Ye video beginners + interview preparation dono ke liye best hai.

Download the File :-
https://docs.google.com/spreadsheets/...

👇 Topics Covered:
00:00 Introduction
01:12 Real-world unclean data issues
04:20 Sales & Quantity validation
08:45 Discount & Profit cleaning
12:30 Logical data validation
15:10 Excel Power Query vs Power BI
18:00 Interview explanation

Agar aap Data Analyst banna chahte ho ya Excel + Power BI seekhna chahte ho to ye video MISS mat karo.

👍 Like | 🔔 Subscribe | 💬 Comment “POWER QUERY”

Thank you So much.

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