ABAP Select data from SAP table OFIWA_ADD_ON into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP OFIWA_ADD_ON table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to OFIWA_ADD_ON. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the OFIWA_ADD_ON table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_OFIWA_ADD_ON TYPE STANDARD TABLE OF OFIWA_ADD_ON,
      WA_OFIWA_ADD_ON TYPE OFIWA_ADD_ON,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <OFIWA_ADD_ON> TYPE OFIWA_ADD_ON.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_OFIWA_ADD_ON.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM OFIWA_ADD_ON
  INTO TABLE IT_OFIWA_ADD_ON.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM OFIWA_ADD_ON
*  INTO TABLE @DATA(IT_OFIWA_ADD_ON2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_OFIWA_ADD_ON INDEX 1 INTO DATA(WA_OFIWA_ADD_ON2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_OFIWA_ADD_ON ASSIGNING <OFIWA_ADD_ON>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<OFIWA_ADD_ON>-XTEXT1 = 1.
<OFIWA_ADD_ON>-FTEXT1 = 1.
<OFIWA_ADD_ON>-XTEXT2 = 1.
<OFIWA_ADD_ON>-FTEXT2 = 1.
<OFIWA_ADD_ON>-XTEXT3 = 1.

ENDLOOP.

LOOP AT IT_OFIWA_ADD_ON INTO WA_OFIWA_ADD_ON.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_OFIWA_ADD_ON-FTEXT3, sy-vline,
  WA_OFIWA_ADD_ON-XTEXT4, sy-vline,
  WA_OFIWA_ADD_ON-FTEXT4, sy-vline,
  WA_OFIWA_ADD_ON-XTEXTX, sy-vline,
  WA_OFIWA_ADD_ON-FTEXTX, sy-vline,
  WA_OFIWA_ADD_ON-FINDEX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_OFIWA_ADD_ON you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_OFIWA_ADD_ON TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_OFIWA_ADD_ON INTO WA_OFIWA_ADD_ON.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_OFIWA_ADD_ON_STR, 
XTEXT1 TYPE STRING,
FTEXT1 TYPE STRING,
XTEXT2 TYPE STRING,
FTEXT2 TYPE STRING,
XTEXT3 TYPE STRING,
FTEXT3 TYPE STRING,
XTEXT4 TYPE STRING,
FTEXT4 TYPE STRING,
XTEXTX TYPE STRING,
FTEXTX TYPE STRING,
FINDEX TYPE STRING,
FINDEI TYPE STRING,
TFILL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_OFIWA_ADD_ON_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_OFIWA_ADD_ON_STR-XTEXT1 sy-vline 
WA_OFIWA_ADD_ON_STR-FTEXT1 sy-vline 
WA_OFIWA_ADD_ON_STR-XTEXT2 sy-vline 
WA_OFIWA_ADD_ON_STR-FTEXT2 sy-vline 
WA_OFIWA_ADD_ON_STR-XTEXT3 sy-vline 
WA_OFIWA_ADD_ON_STR-FTEXT3 sy-vline 
WA_OFIWA_ADD_ON_STR-XTEXT4 sy-vline 
WA_OFIWA_ADD_ON_STR-FTEXT4 sy-vline 
WA_OFIWA_ADD_ON_STR-XTEXTX sy-vline 
WA_OFIWA_ADD_ON_STR-FTEXTX sy-vline 
WA_OFIWA_ADD_ON_STR-FINDEX sy-vline 
WA_OFIWA_ADD_ON_STR-FINDEI sy-vline 
WA_OFIWA_ADD_ON_STR-TFILL sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.