How to use decimal in mysql

MySQL DECIMAL data type is used to store precise decimal numbers and is designed for financial and other calculations that require high precision. The syntax is DECIMAL(precision, scale), where precision is the total number of digits and scale is the number of decimal places. DECIMAL is suitable for storing currency, financial data and high-precision scientific calculations. Advantages include high accuracy, variable length and wide range. However, it takes up more storage space and is slower to compute.

DECIMAL data type in MySQL

The DECIMAL data type is used in MySQL to store precise fixed-point decimal numbers. It is designed for financial and scientific calculations that require a high degree of precision and range.

Syntax

<code>DECIMAL(precision, scale)</code>

• precision: The total number of digits, including the integer digits before the decimal point and the fractional digits after the decimal point.
• scale: The number of digits after the decimal point.

Usage

• #Represents a precise monetary amount: DECIMAL is ideal for storing data with a specific precision (e.g. two decimal places) monetary value.
• Manage financial data: DECIMAL is very useful when you need to accurately calculate financial data such as interest, taxes, and balances.
• Scientific Computing: DECIMAL can be used to store and process scientific data that require high precision, such as measurements and experimental results.

Advantages

• High precision: DECIMAL provides higher precision than other data types, which is very suitable for precise Computing applications.
• Variable length: The length of DECIMAL is specified by precision and scale, allowing numbers of different lengths to be stored as needed.
• Wide range: DECIMAL can range from -9e128 to 9e128, which is sufficient to meet the needs of most applications.

Example

The following example shows how to use the DECIMAL data type to store monetary amounts:

<code class="sql">CREATE TABLE payments (
  amount DECIMAL(10, 2) NOT NULL
);</code>

In this example, The amount column is declared as DECIMAL(10, 2), which means it can store numbers with a total of 10 digits and up to 2 digits after the decimal point.

Limitations

• The DECIMAL data type takes up more storage space than other numeric data types.
• DECIMAL calculations are generally slower than other data types.

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