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How to Convert Oracle To_number to Sql Server?

2 minutes read

To convert Oracle's TO_NUMBER function to SQL Server, you can use the CAST or CONVERT functions in SQL Server. The TO_NUMBER function in Oracle is used to convert a character string to a number. In SQL Server, you can achieve the same functionality by using the CAST function to convert a string to a specific data type, such as float, int, or numeric. Alternatively, you can use the CONVERT function with the appropriate style code to convert a string to a number in SQL Server. Keep in mind that the syntax and functionality of these functions may vary slightly between Oracle and SQL Server, so it's important to review the documentation for each database system to ensure proper conversion.


What is the purpose of the TO_NUMBER function in Oracle?

The TO_NUMBER function in Oracle is used to convert a character or date expression into a number. This can be useful when working with numerical data that is stored as text, such as in a varchar2 column, and needs to be used in mathematical operations or comparisons. The function allows for the conversion of these string representations of numbers into actual numerical values that can be processed and manipulated.


What is the best approach to convert TO_NUMBER results to SQL Server's numeric data type?

The best approach to convert TO_NUMBER results to SQL Server's numeric data type is to simply cast the result as a numeric data type using the CAST or CONVERT function. For example:

1

SELECT CAST(TO_NUMBER('123.45') AS NUMERIC(10, 2)) AS converted_number;


In this example, the TO_NUMBER result is cast as a numeric data type with a precision of 10 and a scale of 2. This will ensure that the result is in the correct numeric format for SQL Server.


What is the significance of specifying format in TO_NUMBER conversion?

Specifying the format in TO_NUMBER conversion is significant because it allows you to convert a string into a number with a specific format. This can be important when dealing with different types of data or when the string contains characters that may need to be formatted in a specific way in order to accurately convert it into a number.


For example, if you have a string that represents a number with a specific format, such as a currency symbol or commas for thousands separators, specifying the format in the TO_NUMBER conversion allows you to accurately convert the string into a number without losing any important formatting information.


Additionally, specifying the format in the TO_NUMBER conversion can help prevent errors or unexpected results by ensuring that the conversion is done accurately and consistently according to the specified format.

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