使用dict在SQL插入上的字符串格式

Question

The following is how I usually add in params in MySQLdb :

cursor.execute('INSERT INTO main_territory (code, name) VALUES (%s, %s)', (item[0], item[1]))

Is there a way to make the string formatting more intuitive? For example, if I have 50 args in the INSERT . Something like:

cursor.execute('''INSET INTO main_territory (code, name) VALUES ({code}, {name})''',
                  {code=item[0], name=item[1}
               )

Answer 1

This depends on the database driver. Usually, if positional arguments ( %s ) are supported, then named arguments could be to, using the %(name)s format:

cursor.execute(
    '''INSERT INTO main_territory (code, name) VALUES (%(code)s, %(name)s)''',
    {'code': item[0], 'name': item[1]})

The parameter values then are passed in as a dictionary.

The most commonly used MySQL database adapter, MySQLdb supports this style.

Other database adapters use ? and :name as the positional and named arguments; you can query the style used with the paramstyle attribute on the module:

>>> import MySQLdb
>>> MySQLdb.paramstyle
'format'

but because most drivers support both positional and named styles, they usually just name one ( 'format' or 'qmark' ) while also supporting the named variants. Always consult the documentation to verify this.