ABAP Select data from SAP table RJKSDCREDIT_ALV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJKSDCREDIT_ALV
*  INTO TABLE @DATA(IT_RJKSDCREDIT_ALV2).
*--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_RJKSDCREDIT_ALV INDEX 1 INTO DATA(WA_RJKSDCREDIT_ALV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJKSDCREDIT_ALV>-SELKZ = 1.
<RJKSDCREDIT_ALV>-VBELN = 1.
<RJKSDCREDIT_ALV>-POSNR = 1.
<RJKSDCREDIT_ALV>-ARKTX = 1.
<RJKSDCREDIT_ALV>-AUART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJKSDCREDIT_ALV-AUDAT, sy-vline,
  WA_RJKSDCREDIT_ALV-BSTNK, sy-vline,
  WA_RJKSDCREDIT_ALV-CHARG, sy-vline,
  WA_RJKSDCREDIT_ALV-DATAB, sy-vline,
  WA_RJKSDCREDIT_ALV-DATBI, sy-vline,
  WA_RJKSDCREDIT_ALV-ERNAM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJKSDCREDIT_ALV 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_RJKSDCREDIT_ALV 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_RJKSDCREDIT_ALV INTO WA_RJKSDCREDIT_ALV.


*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.

*Conversion exit ALPHA, internal->external for field VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJKSDCREDIT_ALV-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKSDCREDIT_ALV-VBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AUART, internal->external for field AUART
CALL FUNCTION 'CONVERSION_EXIT_AUART_OUTPUT'
  EXPORTING
    input =                      WA_RJKSDCREDIT_ALV-AUART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKSDCREDIT_ALV-AUART.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJKSDCREDIT_ALV-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKSDCREDIT_ALV-KUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RJKSDCREDIT_ALV-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKSDCREDIT_ALV-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RJKSDCREDIT_ALV-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKSDCREDIT_ALV-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VRKME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RJKSDCREDIT_ALV-VRKME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJKSDCREDIT_ALV-VRKME.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

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

TYPES: BEGIN OF T_RJKSDCREDIT_ALV_STR, 
SELKZ TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
ARKTX TYPE STRING,
AUART TYPE STRING,
AUDAT TYPE STRING,
BSTNK TYPE STRING,
CHARG TYPE STRING,
DATAB TYPE STRING,
DATBI TYPE STRING,
ERNAM TYPE STRING,
FAKSK TYPE STRING,
KUNNR TYPE STRING,
KWMENG TYPE STRING,
LGORT TYPE STRING,
LIFSK TYPE STRING,
MATNR TYPE STRING,
MEINS TYPE STRING,
NETPR TYPE STRING,
NETWR_AK TYPE STRING,
NETWR TYPE STRING,
SPART TYPE STRING,
VKBUR TYPE STRING,
VKGRP TYPE STRING,
VKORG TYPE STRING,
VRKME TYPE STRING,
VSTEL TYPE STRING,
VTWEG TYPE STRING,
WADAT TYPE STRING,
WAERK TYPE STRING,
WERKS TYPE STRING,
KTEXT TYPE STRING,
AUGRU TYPE STRING,
ABGRU TYPE STRING,
AWAHR TYPE STRING,
VBTYP TYPE STRING,
SHKZG TYPE STRING,
PRSDT TYPE STRING,
KURST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJKSDCREDIT_ALV_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_RJKSDCREDIT_ALV_STR-SELKZ sy-vline 
WA_RJKSDCREDIT_ALV_STR-VBELN sy-vline 
WA_RJKSDCREDIT_ALV_STR-POSNR sy-vline 
WA_RJKSDCREDIT_ALV_STR-ARKTX sy-vline 
WA_RJKSDCREDIT_ALV_STR-AUART sy-vline 
WA_RJKSDCREDIT_ALV_STR-AUDAT sy-vline 
WA_RJKSDCREDIT_ALV_STR-BSTNK sy-vline 
WA_RJKSDCREDIT_ALV_STR-CHARG sy-vline 
WA_RJKSDCREDIT_ALV_STR-DATAB sy-vline 
WA_RJKSDCREDIT_ALV_STR-DATBI sy-vline 
WA_RJKSDCREDIT_ALV_STR-ERNAM sy-vline 
WA_RJKSDCREDIT_ALV_STR-FAKSK sy-vline 
WA_RJKSDCREDIT_ALV_STR-KUNNR sy-vline 
WA_RJKSDCREDIT_ALV_STR-KWMENG sy-vline 
WA_RJKSDCREDIT_ALV_STR-LGORT sy-vline 
WA_RJKSDCREDIT_ALV_STR-LIFSK sy-vline 
WA_RJKSDCREDIT_ALV_STR-MATNR sy-vline 
WA_RJKSDCREDIT_ALV_STR-MEINS sy-vline 
WA_RJKSDCREDIT_ALV_STR-NETPR sy-vline 
WA_RJKSDCREDIT_ALV_STR-NETWR_AK sy-vline 
WA_RJKSDCREDIT_ALV_STR-NETWR sy-vline 
WA_RJKSDCREDIT_ALV_STR-SPART sy-vline 
WA_RJKSDCREDIT_ALV_STR-VKBUR sy-vline 
WA_RJKSDCREDIT_ALV_STR-VKGRP sy-vline 
WA_RJKSDCREDIT_ALV_STR-VKORG sy-vline 
WA_RJKSDCREDIT_ALV_STR-VRKME sy-vline 
WA_RJKSDCREDIT_ALV_STR-VSTEL sy-vline 
WA_RJKSDCREDIT_ALV_STR-VTWEG sy-vline 
WA_RJKSDCREDIT_ALV_STR-WADAT sy-vline 
WA_RJKSDCREDIT_ALV_STR-WAERK sy-vline 
WA_RJKSDCREDIT_ALV_STR-WERKS sy-vline 
WA_RJKSDCREDIT_ALV_STR-KTEXT sy-vline 
WA_RJKSDCREDIT_ALV_STR-AUGRU sy-vline 
WA_RJKSDCREDIT_ALV_STR-ABGRU sy-vline 
WA_RJKSDCREDIT_ALV_STR-AWAHR sy-vline 
WA_RJKSDCREDIT_ALV_STR-VBTYP sy-vline 
WA_RJKSDCREDIT_ALV_STR-SHKZG sy-vline 
WA_RJKSDCREDIT_ALV_STR-PRSDT sy-vline 
WA_RJKSDCREDIT_ALV_STR-KURST sy-vline      INTO ld_text SEPARATED BY SPACE.

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