ABAP Select data from SAP table IR8A_APPDX8B into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP IR8A_APPDX8B 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 IR8A_APPDX8B. 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 IR8A_APPDX8B 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_IR8A_APPDX8B TYPE STANDARD TABLE OF IR8A_APPDX8B,
      WA_IR8A_APPDX8B TYPE IR8A_APPDX8B,
      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: <IR8A_APPDX8B> TYPE IR8A_APPDX8B.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_IR8A_APPDX8B.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM IR8A_APPDX8B
  INTO TABLE IT_IR8A_APPDX8B.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IR8A_APPDX8B
*  INTO TABLE @DATA(IT_IR8A_APPDX8B2).
*--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_IR8A_APPDX8B INDEX 1 INTO DATA(WA_IR8A_APPDX8B2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_IR8A_APPDX8B ASSIGNING <IR8A_APPDX8B>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IR8A_APPDX8B>-IR8A_8B_SECA_T = 1.
<IR8A_APPDX8B>-IR8A_8B_SECB_T = 1.
<IR8A_APPDX8B>-IR8A_8B_SECC_T = 1.
<IR8A_APPDX8B>-IR8A_8B_SECD_T = 1.
<IR8A_APPDX8B>-APPENDIX_8B = 1.

ENDLOOP.

LOOP AT IT_IR8A_APPDX8B INTO WA_IR8A_APPDX8B.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IR8A_APPDX8B-NATIO, sy-vline,
  WA_IR8A_APPDX8B-TOTAL_FLAG, sy-vline,
  WA_IR8A_APPDX8B-SECA_TOTAL_I, sy-vline,
  WA_IR8A_APPDX8B-SECB_TOTAL_I, sy-vline,
  WA_IR8A_APPDX8B-SECC_TOTAL_I, sy-vline,
  WA_IR8A_APPDX8B-SECD_TOTAL_I, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IR8A_APPDX8B 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_IR8A_APPDX8B 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_IR8A_APPDX8B INTO WA_IR8A_APPDX8B.


*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_IR8A_APPDX8B_STR, 
IR8A_8B_SECA_T TYPE STRING,
IR8A_8B_SECB_T TYPE STRING,
IR8A_8B_SECC_T TYPE STRING,
IR8A_8B_SECD_T TYPE STRING,
APPENDIX_8B TYPE STRING,
NATIO TYPE STRING,
TOTAL_FLAG TYPE STRING,
SECA_TOTAL_I TYPE STRING,
SECB_TOTAL_I TYPE STRING,
SECC_TOTAL_I TYPE STRING,
SECD_TOTAL_I TYPE STRING,
SECA_TOTAL_J TYPE STRING,
SECB_TOTAL_J TYPE STRING,
SECC_TOTAL_J TYPE STRING,
SECD_TOTAL_J TYPE STRING,
SECA_TOTAL_K TYPE STRING,
SECB_TOTAL_K TYPE STRING,
SECC_TOTAL_K TYPE STRING,
SECD_TOTAL_K TYPE STRING,
SECA_TOTAL_L TYPE STRING,
SECB_TOTAL_L TYPE STRING,
SECC_TOTAL_L TYPE STRING,
SECD_TOTAL_L TYPE STRING,
GRAND_TOTAL TYPE STRING,
DATE_OF_INCORPRTN TYPE STRING,
FLAG_APPDX8B TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IR8A_APPDX8B_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_IR8A_APPDX8B_STR-IR8A_8B_SECA_T sy-vline 
WA_IR8A_APPDX8B_STR-IR8A_8B_SECB_T sy-vline 
WA_IR8A_APPDX8B_STR-IR8A_8B_SECC_T sy-vline 
WA_IR8A_APPDX8B_STR-IR8A_8B_SECD_T sy-vline 
WA_IR8A_APPDX8B_STR-APPENDIX_8B sy-vline 
WA_IR8A_APPDX8B_STR-NATIO sy-vline 
WA_IR8A_APPDX8B_STR-TOTAL_FLAG sy-vline 
WA_IR8A_APPDX8B_STR-SECA_TOTAL_I sy-vline 
WA_IR8A_APPDX8B_STR-SECB_TOTAL_I sy-vline 
WA_IR8A_APPDX8B_STR-SECC_TOTAL_I sy-vline 
WA_IR8A_APPDX8B_STR-SECD_TOTAL_I sy-vline 
WA_IR8A_APPDX8B_STR-SECA_TOTAL_J sy-vline 
WA_IR8A_APPDX8B_STR-SECB_TOTAL_J sy-vline 
WA_IR8A_APPDX8B_STR-SECC_TOTAL_J sy-vline 
WA_IR8A_APPDX8B_STR-SECD_TOTAL_J sy-vline 
WA_IR8A_APPDX8B_STR-SECA_TOTAL_K sy-vline 
WA_IR8A_APPDX8B_STR-SECB_TOTAL_K sy-vline 
WA_IR8A_APPDX8B_STR-SECC_TOTAL_K sy-vline 
WA_IR8A_APPDX8B_STR-SECD_TOTAL_K sy-vline 
WA_IR8A_APPDX8B_STR-SECA_TOTAL_L sy-vline 
WA_IR8A_APPDX8B_STR-SECB_TOTAL_L sy-vline 
WA_IR8A_APPDX8B_STR-SECC_TOTAL_L sy-vline 
WA_IR8A_APPDX8B_STR-SECD_TOTAL_L sy-vline 
WA_IR8A_APPDX8B_STR-GRAND_TOTAL sy-vline 
WA_IR8A_APPDX8B_STR-DATE_OF_INCORPRTN sy-vline 
WA_IR8A_APPDX8B_STR-FLAG_APPDX8B sy-vline      INTO ld_text SEPARATED BY SPACE.

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