occurs

[Former Member]

what is the diff between OCCURS 0 and OCCURS 1 while creating internal tables?

[Former Member]

what is the diff between OCCURS 0 and OCCURS 1 while creating internal tables?

[sridhar_k1]

Occurs 0 does not reserve space for the itab at the time of declaration, and occurs 1 reserves 1 line when the itab is declared.

Regards

Sridhar

[Former Member]

Occurs 0 creates an internal table with no rows at the time of creation. OCCURS 1 creates a table with 1 physical row at creation time.

[RichHeilman]

OCCURS 1 actually allocates memory space for 1 line of the internal table. OCCURS 0 allocates no memeory space when the internal table is created. The memeory space is allocated when filling the internal table.

Really, you should not be using the OCCURS extension when defining internal tables as it is obselete. You should define a type instead.

Types: begin of ttab,
       fld1 type c,
       end of ttab.

data: itab type table of ttab.
data: wa like line of itab.

REgards,

Rich Heilman

[uwe_schieferstein]

Hello Sudharasan

As Rich Heilman already said itab's with header lines are obsolete.

For me, using itab's with header lines is worst ABAP programming possible because these programs are a mess to read and understand. Such programs are highly error-prone when it comes to maintaining.

Regards

Uwe

[abdul_hakim]

hi

occurs 0-->No memory allocated at the time of cretion

occurs 1-->Memory alloted to a line at the time of creation.

Note:Interal table with header lines are oldest form of

internal tables.

Cheers,

Abdul Hakim

[Former Member]

hi

good

there is besically no difference between the occurs 0 and occurs 1 both of them acquire the same memory.If you know the exact amount of that that you r going to fetch from the database than give the same number with occurs otherwise it doesnot make any difference wheather you give occur 0 or 1, even though you r taking less amount of data it ll use the same memory area.

thanks

mrutyun