void foo(void *context) //function prototype..main().foo(&(ptr->block)); //where ptr->block is of type integer..void foo(void *context) Here I try to use the ptr->block but am having problems. I have tried
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我有一张有四个字段的桌子现在,我正在尝试加载以下数据表中的第三个字段是NULL,这是预期的结果。1,2,NULL,4下面是我的问题:使用这两种(\N,NULL)有什么区别?LOAD DATA LOCAL INFILE 'PATH_TO_DATAFILE'
INTO TABLE TABLE_NAME FIELDS TERMINATED BY