为什么说这种定义内表的方法是错的

[Former Member]

DATA gt_itab TYPE TABLE OF <Table type>.

This would result in the definition of an internal table with rows that are themselves internal tables (of the specified table type)!

初级问题，请帮忙解释一下这句话什么意思？为什么说这种定义内表的方法是错的。谢谢~~~！！

[Former Member · Accepted solution]

Thanks , I know what you mean.

Would u please kindly translate "This would ..." into Chinese, then I could make it clear...

[Former Member · Accepted solution]

DATA gt_itab TYPE TABLE OF <Table type>.
This would result in the definition of an internal table with rows that are themselves internal tables (of the specified table type)!

意思是说这样的定义会变成嵌套表的结构， 就是你定义的内表的行本身就是个内表。

[Former Member]

学习了，这种定义方式我也干过，哈哈

[Former Member]

Thanks a lot.

Have a good day..

[Former Member]

1. TYPE TABLE OF <TYPE>，<TYPE>指的是internal table的line type所以应该是structure

2. <table type> 就已经定义好了internal type的line type和iaccess type以及key，所以通过DATA it_tabe TYPE <table_type>就可以直接定义internal table

[Former Member]

You can use either of the following ways to define the internal table.

DATA gt_itab TYPE <Table type>.

DATA gt_itab TYPE TABLE OF <Structure>.