How to Format Numbers with Two Decimal Places in SQL Server?

Formatting Numbers to Two Decimal Places in SQL Server

This guide explains how to display numeric values with exactly two decimal places in SQL Server. This is a common requirement when presenting financial or other precise data.

The CONVERT function provides the solution. Its syntax is:

CONVERT(DECIMAL(precision, scale), numeric_expression)

Where:

• precision: The total number of digits (both before and after the decimal point).
• scale: The number of digits after the decimal point. Set this to 2 for two decimal places.
• numeric_expression: The number you want to format.

For instance, to format 2.999999 to show two decimal places:

SELECT CONVERT(DECIMAL(10, 2), 2.999999);

This will return 3.00. Note that SQL Server rounds the number.

Important: The DECIMAL data type is crucial for this task. Unlike FLOAT or REAL, DECIMAL offers fixed precision and scale, ensuring accurate representation of decimal values. Choosing the appropriate precision value depends on the expected range of your numbers.

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