inserting to itabs

[Former Member]

Do MOVE:... to itab-... statements insert new records to itabs within a loop? Or will it continually replace the first record in the internal table?

Ex.

Loop at TableA.
  Move: TABLEA-NAME TO vName.
  SELECT NAME INTO tempname FROM TableB WHERE NAME=vName.
  ENDSELECT.
  IF SY-SUBRC <> 0.
     MOVE: tempname  INTO ITAB_nameholder-Name.
  ENDIF.
ENDLOOP.

The reason why I ask is because later down in my program I loop at my internal table, but it does not recognize it as a table. (Even though I declared it earlier.) So I think it may be that my inserts to the itab are not working.

N L

[RichHeilman]

If your internal table has a header line, then moving values to it would only move it in the header line. Use APPEND ITAB statement after fill the header line.

ex..

Data: imara type table of mara with header line.
Data: itab type table of mara with header line.

loop at imara.
move-corresponding imara to itab.
append itab.
endloop.

if your itab is defined like...

data: begin of itab <b>occurs 0 </b>,
      field(1) type c,
      end of itab.

then by default it has a header line.

Regards,

Rich Heilman

Message was edited by: Rich Heilman

[Former Member]

my itab is defined like

data: begin of itab occurs 0 , 
            field(1) type c,      
            end of itab.

and when I try to append the itab, it says my syntax should be like:

APPEND fld TO itab

I'm reading up on APPEND in F1, but is APPEND similar to INSERT in SQL?

like, instead of doing

MOVE: VAL to ITAB-val.

should I do:

APPEND VAL TO ITAB-VAL.

?? (I require several inserts to the different fields of the itab.)

Natasha

[Former Member]

if my itab contains fields name, value, catalog.

Can I do an append like:

APPEND NAME, VALUE, CATALOG TO ITAB.

? If name, value, and catalog correspond are variables and correspond to the field names of the itab.

I saw something similar in F1, but it looked like it only inserted values to an itab that only had one field- basically a list. I'm going to test this now.

N L

[RichHeilman]

You should be filling all your fields of the table structure then doing an append.

ex..

data: begin of itab occurs 0,
      field1 type c,
      field2 type c,
      field3 type c,
      end of itab.

itab-field1 = 'A'.
itab-field2 = 'B'.
itab-field3 = 'C'.
append itab.

If your internal table has no header line, then you need a work area to hold you data.

types: begin of ttab,
      field1 type c,
      field2 type c,
      field3 type c,
      end of ttab.

data: itab type table of ttab.
data: xtab type ttab.

xtab-field1 = 'A'.
xtab-field2 = 'B'.
xtab-field3 = 'C'.
append xtab to itab.

Regards,

Rich Heilman

[Former Member]

the reason why my itabs were not getting populated was because I was looping at a database table.

Thanks for your help gentlemen.

N L

[Former Member]

If your LOOP AT is syntactically correct, then you are

using tables with header lines.

I added a couple of lines to your code:

Loop at TableA.
  Move: TABLEA-NAME TO vName.
  SELECT NAME INTO tempname FROM TableB WHERE NAME=vName.
  ENDSELECT.
  IF SY-SUBRC <> 0.
     <b>CLEAR ITAB_NAMEHOLDER.</b>
     MOVE: tempname  INTO ITAB_nameholder-Name.
     <b>APPEND ITAB_NAMEHOLDER.</b>
  ENDIF.
ENDLOOP.