table type in DATA definition

[raffinkira]

Usually, I use TYPES to define structure and use DATA xxx type standard table of  a certain type defined before.

But when I optimize some old programs, the previous programmer wrote sth like:

DATA: BEGIN OF tab_g_item OCCURS 0,

     maktx   LIKE  makt-maktx,       "

     fkimg   LIKE  vbrp-fkimg,           "

END OF tab_g_item.

So what kind of table ' tab_g_item' is? Is it a standard table? what if I want to make it a sorted table?

[former_member188827]

Yes, it is standard table. In order to define sorted table, first define type using TYPES and then declare internal table using data statement.

Regards

[Former Member]

if you  use OCCURS 0 WITH HEADER LINE then tab_g_item is an internal table.

OCCURS is obsolete command.

It defines an internal table with memory allocated to store a specified number of rows of the internal table in the main memory.

For more information

[raffinkira]

so if tab_A is  a table.

DATA tab_B like table of tab_A.

DATA tab_B like tab_A occurs 0.

both of the above two definition are correct, but the second is not preferred, right?

[matt]

Occurs is obsolete and should not be used in new programs. If you are maintaining old programs, then it is a good idea to refactor without occurs.

I'm now locking this thread, since it is answered, to prevent more people adding the same information you've already received!

[Former Member]

Hi

the usage of occurs clause is now obsolete. It is a standard table only. Occurs clause is mainly used for specifying the amount of memory to be used. Occurs 0 will allow to use 8 KB pages of memory at a time .

With Regards

Suneesh Thampi

[rekha_manjunath2]

if the tab_g_item needs to be an internal table and a work area then it can be declared as with header line.

Occurs 0 just allots space of 8kb to internal table.

[Ajit_K_Panda]

Hi Ming,

Yes it is a standard table. To create a sorted table, you can write as below:

TYPES: BEGIN OF tab_g_item ,

     maktx   LIKE  makt-maktx,       "

     fkimg   LIKE  vbrp-fkimg,           "

END OF tab_g_item.

DATA: lt_g_item   type sorted table of tab_g_item.

Regards,

Ajit