WebOct 5, 2010 · Syntax: rows = cursor.fetchmany (size=1) This method fetches the next set of rows of a query result and returns a list of tuples. If no more rows are available, it returns an empty list. The number of rows returned can be specified using the size argument, which defaults to one. Fewer rows are returned if fewer rows are available than specified. WebMar 4, 2011 · Depending on the options, mysqldb fetch* keep the current set of rows in memory or server side, so fetchmany vs fetchone has some flexibility here to know what to keep in (python's) memory and what to keep db server side.
Understanding PostgreSQL Cursors with Python - Medium
WebMention the difference between fetchone() and fetchmany() Ans. (i) cursor.fetchone() - The fetchone method returns the next row of a query result set or None in case there is no row left. (ii) cursor.fetchmany() method returns the next number of rows (n) of the result set. 3. What is the use of Where Clause.Give a python statement Using the ... WebSolution. fetchone () fetchmany () The fetchone () method returns the next row of a query result set. fetchmany () method returns the next number of rows (n) of the result set. … mac avi audio codec
What is fetchone() in Python? – Worldsrichpeople.com
WebMar 29, 2024 · A resultset is extracted from the database using the cursor object (that has been already created) by giving the following statement.Mydata=cursor.fetchone()(a) How many records will be returned by the fetchone() method?AnswerOne recordExplanation:fetchone()methodreturns a single recordorNoneifno mo WebNov 23, 2024 · .fetchmany ( [size=cursor.arraysize]): Fetch the next set of rows of a query result, returning a sequence of sequences (e.g. a list of tuples). An empty sequence is returned when no more rows are available. The number of rows to fetch per call is specified by the parameter. WebJan 22, 2024 · The fetchall ( ) method is used to fetch all rows from the database table result = cursor.fetchall ( ) III. Answer the following questions (3 Marks) Question 1. What is SQLite? What is its advantage? Answer: SQLite is a simple relational database system, which saves its data in regular data files or even in the internal memory of the computer. costco online 65 inch tv