An analyst wants to format all cost fields as numeric prior to extraction for data cleansing. Which Structured Query Language (SQL) statement will perform this function?

Rationale

CAST statement will perform the function of formatting all cost fields as numeric.

The CAST statement in SQL is specifically designed to convert data from one type to another, making it ideal for formatting cost fields to numeric values before extraction for data cleansing purposes.

A (CAST statement) CORRECT

This statement is used in SQL to convert data types. When an analyst needs to format cost fields as numeric, the CAST function will effectively change the data type of those fields, ensuring they are treated as numbers in subsequent operations such as calculations or aggregations.

B (COALESCE statement) YOUR ANSWER

The COALESCE function is used to return the first non-null value in a list of expressions. While it can be helpful for handling nulls, it does not change the data type of fields, thus it cannot format cost fields as numeric directly.

C (ORDER BY statement) YOUR ANSWER

The ORDER BY clause is used to sort the result set of a query by one or more columns. It does not perform any data type conversion or formatting, so it is not suitable for changing cost fields to numeric types prior to extraction.

D (CONCAT statement) YOUR ANSWER

The CONCAT function is utilized to concatenate two or more strings together. It is not designed for data type conversion and therefore cannot be used to format cost fields as numeric, making it irrelevant for this specific need.

Conclusion

To format cost fields as numeric in SQL, the CAST statement is the appropriate choice, as it allows for the conversion of data types necessary for data cleansing. Other options like COALESCE, ORDER BY, and CONCAT do not provide the required functionality for changing data types, underscoring the necessity of using CAST for this particular task.

An analyst wants to format all cost fields as numeric prior to extraction for data cleansing. Which Structured Query Language (SQL) statement will perform this function?

CAST statement will perform the function of formatting all cost fields as numeric.

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