ABAP Select data from SAP table RJHAGVXVB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJHAGVXVB
*  INTO TABLE @DATA(IT_RJHAGVXVB2).
*--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_RJHAGVXVB INDEX 1 INTO DATA(WA_RJHAGVXVB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJHAGVXVB>-MANDT = 1.
<RJHAGVXVB>-AVM_NR = 1.
<RJHAGVXVB>-POS_NR = 1.
<RJHAGVXVB>-GRUPPABRNR = 1.
<RJHAGVXVB>-VNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJHAGVXVB-BEDNR, sy-vline,
  WA_RJHAGVXVB-PROVTYP, sy-vline,
  WA_RJHAGVXVB-VZUONR, sy-vline,
  WA_RJHAGVXVB-FKBEL, sy-vline,
  WA_RJHAGVXVB-FKPOS, sy-vline,
  WA_RJHAGVXVB-SETTLESTAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJHAGVXVB 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_RJHAGVXVB 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_RJHAGVXVB INTO WA_RJHAGVXVB.


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

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

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

*Conversion exit ALPHA, internal->external for field REF_VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJHAGVXVB-REF_VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJHAGVXVB-REF_VBELN.
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_RJHAGVXVB_STR, 
MANDT TYPE STRING,
AVM_NR TYPE STRING,
POS_NR TYPE STRING,
GRUPPABRNR TYPE STRING,
VNR TYPE STRING,
BEDNR TYPE STRING,
PROVTYP TYPE STRING,
VZUONR TYPE STRING,
FKBEL TYPE STRING,
FKPOS TYPE STRING,
SETTLESTAT TYPE STRING,
FKDAT TYPE STRING,
FAKSP TYPE STRING,
REF_VBELN TYPE STRING,
REF_POSNR TYPE STRING,
DBCODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJHAGVXVB_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_RJHAGVXVB_STR-MANDT sy-vline 
WA_RJHAGVXVB_STR-AVM_NR sy-vline 
WA_RJHAGVXVB_STR-POS_NR sy-vline 
WA_RJHAGVXVB_STR-GRUPPABRNR sy-vline 
WA_RJHAGVXVB_STR-VNR sy-vline 
WA_RJHAGVXVB_STR-BEDNR sy-vline 
WA_RJHAGVXVB_STR-PROVTYP sy-vline 
WA_RJHAGVXVB_STR-VZUONR sy-vline 
WA_RJHAGVXVB_STR-FKBEL sy-vline 
WA_RJHAGVXVB_STR-FKPOS sy-vline 
WA_RJHAGVXVB_STR-SETTLESTAT sy-vline 
WA_RJHAGVXVB_STR-FKDAT sy-vline 
WA_RJHAGVXVB_STR-FAKSP sy-vline 
WA_RJHAGVXVB_STR-REF_VBELN sy-vline 
WA_RJHAGVXVB_STR-REF_POSNR sy-vline 
WA_RJHAGVXVB_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.