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💡 From Beginner to Pro in Azure Data Engineering – Start Your Journey the Smart Way in 2025

📌 Start Date: 10th November 2025

⏰ Time: 08 PM – 09 PM IST | Monday

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🧑‍💼 Interviewer: What's the difference between VLOOKUP and HLOOKUP in Excel?

👨‍💻 Me: VLOOKUP searches vertically down columns (great for column-based data like employee lists), while HLOOKUP searches horizontally across rows (ideal for row-based setups like category headers).

✔ Key Differences:
– VLOOKUP: Looks for a value in the first column of a range, returns from the same row in a specified column—syntax: =VLOOKUP(lookup_value, table_array, col_index_num, [range_lookup]). Use for vertical data; e.g., find salary by ID in a table.
– HLOOKUP: Looks for a value in the first row of a range, returns from the same column in a specified row—syntax: =HLOOKUP(lookup_value, table_array, row_index_num, [range_lookup]). Use for horizontal data; e.g., pull metrics by month across a header row.

📌 Example:
Vertical sales table (IDs in col A, amounts in B): VLOOKUP(ID, A:B, 2, FALSE) gets amount.
Horizontal (months in row 1, sales in row 2): HLOOKUP("Jan", 1:3, 2, FALSE) gets Jan sales.

💡 VLOOKUP's more common (90% of lookups), but both support exact (FALSE) or approx (TRUE) matches—switch to XLOOKUP in modern Excel for bidirectional flexibility!

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