ABAP Select data from SAP table RJHAGVX into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJHAGVX
*  INTO TABLE @DATA(IT_RJHAGVX2).
*--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_RJHAGVX INDEX 1 INTO DATA(WA_RJHAGVX2).


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

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

ENDLOOP.

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

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


*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_RJHAGVX-AVM_NR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJHAGVX-AVM_NR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field REF_VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJHAGVX-REF_VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJHAGVX-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_RJHAGVX_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,
REF_OBJSTAT TYPE STRING,
FKTYP TYPE STRING,
STTYP TYPE STRING,
STAFI TYPE STRING,
VBTYP TYPE STRING,
BRTWK TYPE STRING,
ZLSCH TYPE STRING,
XARCHIV_EE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJHAGVX_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_RJHAGVX_STR-MANDT sy-vline 
WA_RJHAGVX_STR-AVM_NR sy-vline 
WA_RJHAGVX_STR-POS_NR sy-vline 
WA_RJHAGVX_STR-GRUPPABRNR sy-vline 
WA_RJHAGVX_STR-VNR sy-vline 
WA_RJHAGVX_STR-BEDNR sy-vline 
WA_RJHAGVX_STR-PROVTYP sy-vline 
WA_RJHAGVX_STR-VZUONR sy-vline 
WA_RJHAGVX_STR-FKBEL sy-vline 
WA_RJHAGVX_STR-FKPOS sy-vline 
WA_RJHAGVX_STR-SETTLESTAT sy-vline 
WA_RJHAGVX_STR-FKDAT sy-vline 
WA_RJHAGVX_STR-FAKSP sy-vline 
WA_RJHAGVX_STR-REF_VBELN sy-vline 
WA_RJHAGVX_STR-REF_POSNR sy-vline 
WA_RJHAGVX_STR-REF_OBJSTAT sy-vline 
WA_RJHAGVX_STR-FKTYP sy-vline 
WA_RJHAGVX_STR-STTYP sy-vline 
WA_RJHAGVX_STR-STAFI sy-vline 
WA_RJHAGVX_STR-VBTYP sy-vline 
WA_RJHAGVX_STR-BRTWK sy-vline 
WA_RJHAGVX_STR-ZLSCH sy-vline 
WA_RJHAGVX_STR-XARCHIV_EE sy-vline      INTO ld_text SEPARATED BY SPACE.

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