Introduction to Oracle BINARY

2024-07-09 00:31| 来源: 网络整理| 查看: 265

Oracle BINARY_DOUBLE is a data type used in Oracle databases to store double-precision floating-point numbers. It is a fixed-length data type that can store double-precision floating-point numbers in Oracle databases, occupying 8 bytes of storage space. This data type supports all floating-point arithmetic and arithmetic operators, and is capable of preserving high-precision floating-point values. In this article, we will introduce the syntax, use cases, examples, and conclusions of the BINARY_DOUBLE data type.

Syntax

The syntax for the BINARY_DOUBLE data type is as follows:

BINARY_DOUBLE Use Cases

The BINARY_DOUBLE data type is suitable for scenarios that require high-precision floating-point values. For example, it can be used to store floating-point values in fields such as scientific computing, astronomy, and finance. In addition, using the BINARY_DOUBLE data type can also improve computational efficiency and reduce storage space when dealing with large amounts of data.

Examples

Here are some examples of using the BINARY_DOUBLE data type:

Example 1 CREATE TABLE employee_salary ( id NUMBER(10), salary BINARY_DOUBLE ); INSERT INTO employee_salary (id, salary) VALUES (1, 123456789.123456789); INSERT INTO employee_salary (id, salary) VALUES (2, 987654321.987654321); SELECT * FROM employee_salary;

Output:

ID SALARY --- --------------- 1 123456789.1235 2 987654321.9877 Example 2 SELECT 123456789.123456789 + 987654321.987654321 FROM dual;

Output:

123456789.11111111 Conclusion

The Oracle BINARY_DOUBLE data type is a very useful data type for storing high-precision floating-point values. Using the BINARY_DOUBLE data type can also improve computational efficiency and reduce storage space when dealing with large amounts of data.

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