An analyst wants to combine the address columns of city and state and sort by state prior to extraction for cleansing and analysis. Which combination of Structured Query Language (SQL) statements will perform the task?

Rationale

CONCAT and ORDER BY statements

To effectively combine the address columns of city and state while sorting by the state, the analyst should use the CONCAT function to merge the columns and the ORDER BY clause to sort the results. This combination directly addresses both tasks required for data cleansing and analysis.

A (CONCAT and ORDER BY statements) CORRECT

Using the CONCAT function allows the analyst to merge the city and state columns into a single string, while the ORDER BY clause enables sorting the results based on the state. This approach fulfills the analyst's requirement to combine and sort the address information efficiently.

B (DISTINCT and WHERE statements) YOUR ANSWER

The DISTINCT keyword is used to remove duplicate records from the result set, while the WHERE clause filters records based on specified conditions. However, these statements do not address the need to combine the city and state columns or sort the results, making them irrelevant for the given task.

C (TRIM and CAST statements) YOUR ANSWER

TRIM is used to remove leading and trailing spaces from string values, and CAST converts one data type to another. While these functions can be useful for data manipulation, they do not facilitate the combination of the city and state columns or sorting them, which is essential for the analyst's objectives.

D (COALESCE and SUBSTR statements) YOUR ANSWER

COALESCE returns the first non-null value from a list of arguments, and SUBSTR extracts a substring from a string. These functions do not serve the purpose of combining two columns or sorting them, thus failing to meet the requirements of the analyst's task.

Conclusion

To combine the address columns of city and state and sort by state efficiently, the analyst should utilize the CONCAT function along with the ORDER BY clause. Other options, while useful in different contexts, do not provide the necessary functionality for merging and sorting, demonstrating the importance of selecting the correct SQL statements for specific data manipulation tasks.

An analyst wants to combine the address columns of city and state and sort by state prior to extraction for cleansing and analysis. Which combination of Structured Query Language (SQL) statements will perform the task?

CONCAT and ORDER BY statements

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