Question

guys plz help me
plz answer that 5th question
computer science (python programming language)

unwanted answers will be reported ​

Answer 1

Explanation:

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Answer 2

Answer:

i)

fetchall() and fetchone() are the methods used in Python to retrieve rows from a SQL database.

cursor.fetchone() method returns a single record or None if no more rows are available whereas cursor.fetchall() fetches all the rows of a query result. It returns all the rows as a list of tuples. An empty list is returned if there is no record available to fetch.

Examples: Refer to the attachment.

ii)

To delete the duplicate rows from the table in SQL Server:

1. Find duplicate rows using GROUP BY clause or ROW_NUMBER() function.
2. Use DELETE statement to remove the duplicate rows.