python 操作MySQL避坑1064

pymysql.err.ProgrammingError: (1064, "You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near xxxxx)

　　pymysql操作數據庫出現這種錯誤多半是語法問題，比如當我們使用如下語法是就會出現此錯誤

conn.execute("SELECT * FROM foo WHERE bar = %s AND baz = %s" % (param1, param2))

　　正確的寫法如下

c.execute("SELECT * FROM foo WHERE bar = %s AND baz = %s", (param1, param2))

　　

 

 

拓展：

python操作MySQL數據庫

import pymysql
db = pymysql.connect(host='localhost', user='root', password='123456', port=3306, db='spiders'，charset='utf8') cursor = db.cursor() 
sql = 'select * from students;' 
cursor.execute(sql) 
cursor.close()
db.close()