ABAP Select data from SAP table RGJVC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RGJVC
*  INTO TABLE @DATA(IT_RGJVC2).
*--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_RGJVC INDEX 1 INTO DATA(WA_RGJVC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RGJVC>-BELNR = 1.
<RGJVC>-BUKRS = 1.
<RGJVC>-GJAHR = 1.
<RGJVC>-BUZEI = 1.
<RGJVC>-WAERS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RGJVC-UMSKZ, sy-vline,
  WA_RGJVC-KOART, sy-vline,
  WA_RGJVC-HKONT, sy-vline,
  WA_RGJVC-SAKNR, sy-vline,
  WA_RGJVC-PARGB, sy-vline,
  WA_RGJVC-GSBER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RGJVC 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_RGJVC 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_RGJVC INTO WA_RGJVC.


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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field ANLN1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RGJVC-ANLN1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RGJVC-ANLN1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANLN2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RGJVC-ANLN2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RGJVC-ANLN2.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ABPSP, internal->external for field PROJK
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_RGJVC-PROJK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RGJVC-PROJK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VBUND
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RGJVC-VBUND
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RGJVC-VBUND.
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_RGJVC_STR, 
BELNR TYPE STRING,
BUKRS TYPE STRING,
GJAHR TYPE STRING,
BUZEI TYPE STRING,
WAERS TYPE STRING,
UMSKZ TYPE STRING,
KOART TYPE STRING,
HKONT TYPE STRING,
SAKNR TYPE STRING,
PARGB TYPE STRING,
GSBER TYPE STRING,
KUNNR TYPE STRING,
LIFNR TYPE STRING,
ANLN1 TYPE STRING,
ANLN2 TYPE STRING,
AUFNR TYPE STRING,
KOSTL TYPE STRING,
PROJK TYPE STRING,
VBUND TYPE STRING,
DMBTR TYPE STRING,
DMBE2 TYPE STRING,
DMBE3 TYPE STRING,
WRBTR TYPE STRING,
SKNTO TYPE STRING,
SKNT2 TYPE STRING,
SKNT3 TYPE STRING,
WSKTO TYPE STRING,
REBZT TYPE STRING,
DIFHW TYPE STRING,
DIFH2 TYPE STRING,
DIFH3 TYPE STRING,
DIFFW TYPE STRING,
BDIFF TYPE STRING,
BDIF2 TYPE STRING,
BDIF3 TYPE STRING,
JVA_RDIFF TYPE STRING,
JVA_RDIF2 TYPE STRING,
JVA_RDIF3 TYPE STRING,
QSSKZ TYPE STRING,
SHKZG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RGJVC_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_RGJVC_STR-BELNR sy-vline 
WA_RGJVC_STR-BUKRS sy-vline 
WA_RGJVC_STR-GJAHR sy-vline 
WA_RGJVC_STR-BUZEI sy-vline 
WA_RGJVC_STR-WAERS sy-vline 
WA_RGJVC_STR-UMSKZ sy-vline 
WA_RGJVC_STR-KOART sy-vline 
WA_RGJVC_STR-HKONT sy-vline 
WA_RGJVC_STR-SAKNR sy-vline 
WA_RGJVC_STR-PARGB sy-vline 
WA_RGJVC_STR-GSBER sy-vline 
WA_RGJVC_STR-KUNNR sy-vline 
WA_RGJVC_STR-LIFNR sy-vline 
WA_RGJVC_STR-ANLN1 sy-vline 
WA_RGJVC_STR-ANLN2 sy-vline 
WA_RGJVC_STR-AUFNR sy-vline 
WA_RGJVC_STR-KOSTL sy-vline 
WA_RGJVC_STR-PROJK sy-vline 
WA_RGJVC_STR-VBUND sy-vline 
WA_RGJVC_STR-DMBTR sy-vline 
WA_RGJVC_STR-DMBE2 sy-vline 
WA_RGJVC_STR-DMBE3 sy-vline 
WA_RGJVC_STR-WRBTR sy-vline 
WA_RGJVC_STR-SKNTO sy-vline 
WA_RGJVC_STR-SKNT2 sy-vline 
WA_RGJVC_STR-SKNT3 sy-vline 
WA_RGJVC_STR-WSKTO sy-vline 
WA_RGJVC_STR-REBZT sy-vline 
WA_RGJVC_STR-DIFHW sy-vline 
WA_RGJVC_STR-DIFH2 sy-vline 
WA_RGJVC_STR-DIFH3 sy-vline 
WA_RGJVC_STR-DIFFW sy-vline 
WA_RGJVC_STR-BDIFF sy-vline 
WA_RGJVC_STR-BDIF2 sy-vline 
WA_RGJVC_STR-BDIF3 sy-vline 
WA_RGJVC_STR-JVA_RDIFF sy-vline 
WA_RGJVC_STR-JVA_RDIF2 sy-vline 
WA_RGJVC_STR-JVA_RDIF3 sy-vline 
WA_RGJVC_STR-QSSKZ sy-vline 
WA_RGJVC_STR-SHKZG sy-vline      INTO ld_text SEPARATED BY SPACE.

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