Syntax:
cursor.execute(operation, params=None) iterator = cursor.execute(operation, params=None) # Allowed before 9.2.0 iterator = cursor.execute(operation, params=None, multi=True) This method executes the given database operation (query or command). The parameters found in the tuple or dictionary params are bound to the variables in the operation. Specify variables using %s or %( parameter style (that is, using name)sformat or pyformat style).
Before Connector/Python 9.2.0, execute() accepted a multi option and returned an iterator if set to True. That option was removed in 9.2.0, and Section 9.3, “Executing Multiple Statements” was added.
In Python, a tuple containing a single value must include a comma. For example, ('abc') is evaluated as a scalar while ('abc',) is evaluated as a tuple.
This example inserts information about a new employee, then selects the data for that person. The statements are executed as separate execute() operations:
insert_stmt = ( "INSERT INTO employees (emp_no, first_name, last_name, hire_date) " "VALUES (%s, %s, %s, %s)" ) data = (2, 'Jane', 'Doe', datetime.date(2012, 3, 23)) cursor.execute(insert_stmt, data) select_stmt = "SELECT * FROM employees WHERE emp_no = %(emp_no)s" cursor.execute(select_stmt, { 'emp_no': 2 }) The data values are converted as necessary from Python objects to something MySQL understands. In the preceding example, the datetime.date() instance is converted to '2012-03-23'.
If the connection is configured to fetch warnings, warnings generated by the operation are available through the MySQLCursor.fetchwarnings() method.