借鉴了https://blog.csdn.net/qq_34625397/article/details/71108461
sql = "delete from demo where name=%s"% "'li'"
双引号总在加引号表示引用
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借鉴了https://blog.csdn.net/qq_34625397/article/details/71108461
sql = "delete from demo where name=%s"% "'li'"
双引号总在加引号表示引用