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balakrishnanauthorOracle Data Type Without Precision and Scale
In the world of database management, data types play a crucial role in storing and managing data. One of the most important data types in Oracle database is the NUMBER data type, which is used to store decimal values. However, sometimes, it may be necessary to have a number data type without precision and scale. In this article, we will explore the concept of Oracle number data type without precision and scale and its usage in Oracle databases.
Oracle Number Data Type
The Oracle NUMBER data type is a fixed-precision, fixed-scale decimal type that can store decimal values. It is used to store financial data, mathematical calculations, and other types of decimal-based information. The NUMBER data type has a precision and scale parameter that defines the maximum number of significant digits allowed in the stored value.
Precision and Scale in Oracle NUMBER Data Type
Precision and scale are two important parameters in the Oracle NUMBER data type that define the maximum number of significant digits allowed in the stored value. Precision is the total number of digits to the right of the decimal point, while scale is the number of significant digits after the decimal point.
For example, a NUMBER with precision 10 and scale 0 stores a value with 10 significant digits, including the decimal point. A NUMBER with precision 10 and scale 2 stores a value with 10 significant digits, including the decimal point, with two decimal places.
Usage of Oracle Number Data Type Without Precision and Scale
Sometimes, it may be necessary to store a decimal value without precision and scale. This can be achieved by using the ORDINAL value type instead of the NUMBER data type. The ORDINAL value type is a fixed-precision, fixed-scale decimal type that can store decimal values without precision and scale.
For example, if you need to store a decimal value without precision and scale, you can use the ORDINAL data type instead of the NUMBER data type. This can be done by converting the value to an ORDINAL data type using the TO_CHAR function and specifying the required format.
In conclusion, the Oracle NUMBER data type is a useful tool for storing decimal values with precision and scale. However, sometimes, it may be necessary to have a number data type without precision and scale. In such cases, the ORDINAL value type can be used to store decimal values without precision and scale. By understanding the concept of Oracle number data type without precision and scale and its usage in Oracle databases, you can make better decisions when designing and managing your database applications.