Explanation:
To ensure the cell operates as intended without errors, especially if the billing table already exists, the DROP TABLE statement should be replaced with DROP TABLE IF EXISTS. This modification guarantees that the table is only dropped if it exists, preventing any potential errors during execution.
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A SQL notebook scheduled for daily execution contains a cell with the following statements aimed at dropping a table named billing if it exists, before creating and inserting values into the table. The statements are: DROP TABLE billing;, CREATE TABLE billing (item string, quantity int, price float);, and INSERT INTO billing VALUES (‘DP‘, 5, 500.00);. What modifications, if any, are needed to ensure the DROP TABLE statement does not throw an error?
A
Reverse the order of the DROP and CREATE statements.
B
Use DROP TABLE IF TABLE EXISTS instead of DROP TABLE.
C
Replace DROP TABLE with DROP IF TABLE EXISTS.
D
No changes are necessary; the statements will execute without errors.
E
Use DROP TABLE IF EXISTS in place of DROP TABLE.
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