Complete SAS Programming Guide - Learn SAS and Become a Data Ninja - Finding Duplicate Observations

What is the primary reason for using a function to find duplicate rows in a large table?

• To delete all duplicate rows

• To sort the table alphabetically

• To manually verify each row

• To efficiently identify duplicates without manual inspection

In the SQL query, what does the asterisk (*) symbolize in the SELECT statement?

• It selects only character columns

• It selects only numeric columns

• It selects all columns

• It selects only the first column

What is the purpose of using an alias in the SQL query?

• To delete duplicate rows

• To create a new column for storing the count

• To rename the table

• To sort the results

How does the HAVING clause differ from the WHERE clause in SQL?

• HAVING is used to join tables

• HAVING is used to sort results

• HAVING filters groups, WHERE filters rows

• HAVING is used before GROUP BY

What does the example output demonstrate in the final section?

• The sorting of employee data

• The deletion of duplicate rows

• The identification of duplicate entries for specific employees

• The merging of two tables