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 will perform the task.

Using the CONCAT function allows the analyst to merge the city and state address columns into a single entity, while the ORDER BY clause ensures the results are sorted by the state column, facilitating effective extraction for further cleansing and analysis.

A (CONCAT and ORDER BY statements) CORRECT

The CONCAT function is specifically designed to combine two or more strings into one, making it suitable for merging the city and state columns into a single address field. The ORDER BY clause is essential for sorting the resulting data by the state, ensuring that the output is organized correctly for subsequent analysis.

B (DISTINCT and WHERE statements) YOUR ANSWER

While the DISTINCT keyword is used to eliminate duplicate records, it does not serve the purpose of combining columns. The WHERE clause is utilized for filtering records based on specified conditions but does not address the need to concatenate city and state columns or sort the results.

C (TRIM and CAST statements) YOUR ANSWER

The TRIM function is useful for removing extra spaces from strings, and CAST is used to convert data types. However, neither function can concatenate two columns nor sort data, making them unsuitable for the task of combining addresses and sorting by state.

D (COALESCE and SUBSTR statements) YOUR ANSWER

COALESCE is used to return the first non-null value in a list of arguments, while SUBSTR extracts a substring from a string. These functions do not perform the necessary task of merging the city and state columns or sorting the results, thus failing to meet the requirements of the analyst's needs.

Conclusion

To combine the address columns of city and state while sorting by state, the use of CONCAT for merging and ORDER BY for sorting is essential. The other options, while useful in different contexts, do not fulfill the requirement to concatenate and sort the data, highlighting the need for the correct SQL statements to achieve the desired outcome effectively.

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 will perform the task.

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