摘要:
import pymysql # 打开数据库连接 conn = pymysql.connect( host="98.159..",user="sa",password="sa",database="mysjk", charset="utf8") print(conn) print(type(conn 阅读全文
摘要:
删除:delete from user(删除user表中所有记录)不带星号 显示记录数:select count(1) from user (不用count(*)效率低)(1可以替换成字段名: select count(tigan) from tiku) mysql> create database 阅读全文