pyMySQLSQL语句传参问题,单个参数或多个参数说明

field = '-'
sql_talk="UPDATE cnp.Test set a='' where b='%s'"
cursor.execute(sql_talk % field)
db.commit()

field = '-'
a = 'code'
sql_talk="UPDATE cnp.Test set {0}='' where business_registration_code='{1}'".format(a,field)

cursor.execute(sql_talk)
db.commit()

import pymysql
db = pymysql.connect(host="119.XX.XX.XX",
            port=3306,
            user="XXXXXXXX",
            passwd="XXXXXXXXXXXXX",
            db="XXXXXX",
            charset='utf8')
 
# %s 占位符为需要传递的参数，切记不要加''双引号，要不然会报错
sql = "SELECT totalusercount * 1.4 FROM mm_project_uv_outdoor WHERE poiid = %s AND currenttime = %s"
 
cursor = db.cursor()
# 以下为传递多个参数的用法
cursor.execute(sql,['B00140N5CS','2019-04-23'])
# 传递单个参数时 cursor.execute(sql,'B00140N5CS')
print(cursor.fetchall())
db.close()