Python中的数据库更新操作
UPDATE对任何数据库的操作意味着更新一个或多个记录，这些记录已在数据库中可用。
以下过程更新所有SEX为'M'的记录。在这里，我们将所有男性的年龄提高了一年。
示例
#!/usr/bin/python
import MySQLdb
# Open database connection
db = MySQLdb.connect("localhost","testuser","test123","TESTDB" )
# prepare a cursor object using cursor() method
cursor = db.cursor()
# Prepare SQL query to UPDATE required records
sql = "UPDATE EMPLOYEE SET AGE = AGE + 1
WHERE SEX = '%c'" % ('M')
try:
# Execute the SQL command
cursor.execute(sql)
# Commit your changes in the database
db.commit()
except:
# Rollback in case there is any error
db.rollback()
# disconnect from server
db.close()