fetch函数将结果集指针指向下一行。

The fetch function sets the result set pointer to the next row.

youdao

我知道读了之后，文件指针会指向下一行，关键是我要把读过的删除掉。

I think you only read and delete some lines in the file.

youdao

我知道读了之后，文件指针会指向下一行，关键是我要把读过的删除掉。

I think you only read and delete some lines in the file.

youdao