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python程序段错误， log:segfault at 1a8 ip 00007f31022b30c9 sp 00007f30687f6bc0 error 4 in libmysqlclient.so.18.1.0[7f3102269000+2ff000]问题原因：执行Mysql函数未加锁， 程序为多线程

1. 同表拷贝插入    insert into Table1(name,age,sex)  select  name,age,"Male" FROM Table1 where id=1002. 不同表拷贝插入   insert into Table1(name,age,sex)  select  name,age,"Male" FROM Table2 where id=100

使用C操作MySQL，程序完成时使用Valgrind检测，发现有内存泄漏。==4785== LEAK SUMMARY:==4785== definitely lost: 0 bytes in 0 blocks==4785== indirectly lost: 0 bytes in 0 blocks==4785== possibly lost: 0 bytes in