topic ABAP table reading code keeps hanging in Application Development and Automation Discussions

ABAP table reading code keeps hanging

Former Member — Wed, 26 Mar 2008 09:56:37 GMT

Hi,

I have copied some code from a book, and modified it, in order to learn ABAP. The program keeps hanging, and I do not know why.

I have less than 2 weeks of experience with ABAP, so clearly explain everything.

Regards,

Al Lal


data: w_key(10) type c.
data: begin of ikey,
      city(10) type c,
      state(2) type c,
      zip(5) type c,
      end of ikey.

data: begin of itab2 occurs 10000,
      city(10) type c,
      state(2) type c,
      zip(5) type c,
      name(15) type c,
      address(20) type c,
      phone(10) type c,
      end of itab2.

move 'Miami' to itab2-city.
move 'FL' to itab2-state.
move '99999' to itab2-state.
append itab2.
clear itab2.

move 'New York' to itab2-city.
move 'NY' to itab2-state.
move '99999' to itab2-zip.
append itab2.
clear itab2.

move 'New York' to w_key.
while sy-subrc = 0.
  read table itab2 with key w_key.
  if sy-subrc = 0.
    write itab2.
  endif.
endwhile.

move 'New York' to ikey-city.
move 'NY' to ikey-state.
move '99999' to ikey-zip.
while sy-subrc = 0.
  read table itab2 with key ikey.
  if sy-subrc = 0.
    write itab2.
  endif.
endwhile.

Re: ABAP table reading code keeps hanging

Former Member — Wed, 26 Mar 2008 09:59:24 GMT

The best way to resolve issues is to run the program in debug mode. Anyway, its prob this.

move 'New York' to w_key.

while sy-subrc = 0.

read table itab2 with key w_key.

if sy-subrc = 0.

write itab2.

endif.

endwhile.

The return code will always be zero. Change it to this.

move 'New York' to w_key.

read table itab2 with key w_key.

if sy-subrc = 0.

write itab2.

endif.

Re: ABAP table reading code keeps hanging

Former Member — Wed, 26 Mar 2008 10:05:02 GMT

Hi,

Remove while-endwhile...

while reading a table you always check sy-subrc.

If the entry is available it will show sy-subrc = 0.