ABAP Select data from SAP table RJGBKVW into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJGBKVW
*  INTO TABLE @DATA(IT_RJGBKVW2).
*--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_RJGBKVW INDEX 1 INTO DATA(WA_RJGBKVW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJGBKVW>-MANDT = 1.
<RJGBKVW>-GPNR = 1.
<RJGBKVW>-VKORG = 1.
<RJGBKVW>-VTWEG = 1.
<RJGBKVW>-SPART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJGBKVW-INSERENT, sy-vline,
  WA_RJGBKVW-BELEGEINH, sy-vline,
  WA_RJGBKVW-EKORG, sy-vline,
  WA_RJGBKVW-BANKS, sy-vline,
  WA_RJGBKVW-BANKL, sy-vline,
  WA_RJGBKVW-BANKN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJGBKVW 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_RJGBKVW 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_RJGBKVW INTO WA_RJGBKVW.


*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 GPNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJGBKVW-GPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJGBKVW-GPNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field BELEGEINH
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJGBKVW-BELEGEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJGBKVW-BELEGEINH.
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_RJGBKVW_STR, 
MANDT TYPE STRING,
GPNR TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
INSERENT TYPE STRING,
BELEGEINH TYPE STRING,
EKORG TYPE STRING,
BANKS TYPE STRING,
BANKL TYPE STRING,
BANKN TYPE STRING,
ISPXHB TYPE STRING,
ISPBNKSP TYPE STRING,
DBCODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJGBKVW_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_RJGBKVW_STR-MANDT sy-vline 
WA_RJGBKVW_STR-GPNR sy-vline 
WA_RJGBKVW_STR-VKORG sy-vline 
WA_RJGBKVW_STR-VTWEG sy-vline 
WA_RJGBKVW_STR-SPART sy-vline 
WA_RJGBKVW_STR-INSERENT sy-vline 
WA_RJGBKVW_STR-BELEGEINH sy-vline 
WA_RJGBKVW_STR-EKORG sy-vline 
WA_RJGBKVW_STR-BANKS sy-vline 
WA_RJGBKVW_STR-BANKL sy-vline 
WA_RJGBKVW_STR-BANKN sy-vline 
WA_RJGBKVW_STR-ISPXHB sy-vline 
WA_RJGBKVW_STR-ISPBNKSP sy-vline 
WA_RJGBKVW_STR-DBCODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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