Question at position 14 What does the following SQL statement do? SELECT * From Customer WHERE Cust_Type = "Best"Selects all the fields from the Customer table for each row with a customer labeled "*" Selects fields with a "*" in them from the Customer tableSelects all the fields from the Customer table for each row with a customer labeled "Best"Selects the "*" field from the Customer table for each row with a customer labeled "Best"

Question

Question at position 14 What does the following SQL statement do? SELECT * From Customer WHERE Cust_Type = "Best"Selects all the fields from the Customer table for each row with a customer labeled "*" Selects fields with a "*" in them from the Customer tableSelects all the fields from the Customer table for each row with a customer labeled "Best"Selects the "*" field from the Customer table for each row with a customer labeled "Best"

BlackTom AI · Accepted Answer

Question: What does the following SQL statement do? SELECT * From Customer WHERE Cust_Type = "Best"

Options to evaluate:
1) Selects all the fields from the Customer table for each row with a customer labeled "*"
2) Selects fields with a "*" in them from the Customer table
3) Selects all the fields from the Customer table for each row with a customer labeled "Best"
4) Selects the "*" field from the Customer table for each row with a customer labeled "Best"

Option 1: This option suggests filtering on a literal asterisk value "*" in Cust_Type. The SQL clause WHERE Cust_Type = "Best" does not involve an asterisk; it checks for the value Best. Therefore this option misreads both the literal being compared and the meaning of the asterisk in this context, making it incorrect.

Option 2: This wording implies selecting columns whose names contain an asterisk, i.e., dynamic or pattern-based column selection. In SQL, SELECT * means all columns, not only those whose names contain a *, and there is no operator here that fetches columns by name pattern. This option confuses the star symbol in the select list with a literal in the column name, so it is incorrect.

Option 3: This option correctly describes the query: SELECT * returns all fields (columns) from the Customer table, and the WHERE clause restricts rows to those where Cust_Type equals Best. Therefore, this option accurately captures both the select list and the filter condition.

Option 4: This option claims only the "*" field is selected for rows where Cust_Type is Best. In SQL, SELECT * means all columns, not a single column named "*". There is no column literally named "*" produced by this query, so this option is incorrect.

Summary: After examining each choice, option 3 is the statement that correctly reflects the meaning of SELECT * FROM Customer WHERE Cust_Type = "Best": all fields from matching rows where the customer type is Best. The other options misunderstand the role of the asterisk in either the SELECT list or the value comparison, leading to incorrect interpretations.

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