You try to change a column's data type from Decimal Number to Whole Number in Power BI Desktop, but some values are rounded unexpectedly. What is the best way to avoid this?

medium📝 Formula Fix Q7 of 15

Power BI - Power Query Editor

ADelete decimal values manually before changing type.

BChange the data type directly; Power BI always truncates decimals.

CConvert the column to Text first, then to Whole Number.

DUse the 'Round Down' function before changing the data type.

Step-by-Step Solution

Solution:

Step 1: Understand default behavior when changing Decimal to Whole Number
Power BI rounds values by default, which may cause unexpected rounding.
Step 2: Use Round Down to control rounding
Applying Round Down ensures decimals are truncated, avoiding unwanted rounding.
Final Answer:
Use the 'Round Down' function before changing the data type. -> Option D
Quick Check:
Round Down controls decimal truncation before type change [OK]

Quick Trick: Round down decimals before converting to whole number [OK]

Common Mistakes:

Assuming Power BI truncates automatically
Converting via Text causes errors
Manually deleting decimals is inefficient

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You try to change a column's data type from Decimal Number to Whole Number in Power BI Desktop, but some values are rounded unexpectedly. What is the best way to avoid this?

Step 1: Understand default behavior when changing Decimal to Whole Number

Step 2: Use Round Down to control rounding

Final Answer:

Quick Check:

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