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4. Question 4   You are working with a database table that contains invoice data. The table includes columns for invoice_id and customer_id. You want to remove duplicate entries for customer ID and sort the results by invoice ID.  You write the SQL query below. Add a DISTINCT clause that will remove duplicate entries from the customer_id column.  NOTE: The three dots (...) indicate where to add the clause. 1.SELECT ...DISTINCT  2.invoice_id 3.FROM  4.customer_data  5. What customer ID number appears in row 12 of your query result? 23? 42? 8? 16?

4. Question 4   You are working with a database table that contains invoice data. The table includes columns for invoice_id and customer_id. You want to remove duplicate entries for customer ID and sort the results by invoice ID.  You write the SQL query below. Add a DISTINCT clause that will remove duplicate entries from the customer_id column.  NOTE: The three dots (...) indicate where to add the clause. 1.SELECT ...DISTINCT  2.invoice_id 3.FROM  4.customer_data  5. What customer ID number appears in row 12 of your query result? 23? 42? 8? 16?

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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4.

Question 4

 

You are working with a database table that contains invoice data. The table includes columns for invoice_id and customer_id. You want to remove duplicate entries for customer ID and sort the results by invoice ID. 

You write the SQL query below. Add a DISTINCT clause that will remove duplicate entries from the customer_id column. 

NOTE: The three dots (...) indicate where to add the clause.

1.SELECT ...DISTINCT 
2.invoice_id
3.FROM 
4.customer_data 
5.

What customer ID number appears in row 12 of your query result?

23?

42?

8?

16?

 

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