在MySQL5.5里,规范了sql语句表连接的写法。deleteusera,user2bfromuserajoinuser2bona.id=b.id;这样写在MySQL5.1里,可以正常执行,..
在MySQL5.5里,规范了sql语句表连接的写法。
这样写在MySQL5.1里,香港服务器,可以正常执行,但在MySQL5.5里就报错,下面是一个测试:
可以看到,执行时报错。那么规范后的写法是:
参考手册:
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