python3 - 用pymysql操作數據庫

• 首先導入模塊import pymysql.cursors
• 鏈接數據庫
• 獲取游標

connection = pymysql.connect(host='127.0.0.1',
                             user='root',
                             password='896641606',
                             db = 'newtable',
                             charset='utf8mb4',
                             cursorclass=pymysql.cursors.DictCursor)
cursor = connection.cursor()

• 創建表TABLEONE此處要大寫 不知為何?不需要引號

sql = """CREATE TABLE IF NOT EXISTS TABLEONE (
         `id` int(11) NOT NULL AUTO_INCREMENT,
         `title` varchar(255) COLLATE utf8_bin NOT NULL,
         `vote_count` int(255) COLLATE utf8_bin NOT NULL,
         `answer_count` int(255) COLLATE utf8_bin NOT NULL,
         `scan_count` int(255) COLLATE utf8_bin NOT NULL,
         PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin
AUTO_INCREMENT=1 ;"""

creatResult = cursor.execute(sql)

• 插入數據
• 需要注意的是雖然創建表的時候定義的 三列 vote_count answer_count scan_count 是int 類型 但是拼接 sql 語句的時候仍然要用 %s 否則插入不報錯,但是不成功.

sql = "INSERT INTO `TABLEONE` (`title`, vote_count, answer_count, scan_count) VALUES (%s, %s, %s, %s)"
cursor.execute(sql, ('[e-mail]', -1,1,30))
connection.commit()

源文檔地址: http://pymysql.readthedocs.io/en/latest/user/examples.html