ABAP Select data from SAP table J_3RFVATMM_ITEM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_3RFVATMM_ITEM 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 J_3RFVATMM_ITEM. 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 J_3RFVATMM_ITEM 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_J_3RFVATMM_ITEM TYPE STANDARD TABLE OF J_3RFVATMM_ITEM,
      WA_J_3RFVATMM_ITEM TYPE J_3RFVATMM_ITEM,
      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: <J_3RFVATMM_ITEM> TYPE J_3RFVATMM_ITEM.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_3RFVATMM_ITEM.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_3RFVATMM_ITEM
  INTO TABLE IT_J_3RFVATMM_ITEM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_3RFVATMM_ITEM
*  INTO TABLE @DATA(IT_J_3RFVATMM_ITEM2).
*--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_J_3RFVATMM_ITEM INDEX 1 INTO DATA(WA_J_3RFVATMM_ITEM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_3RFVATMM_ITEM ASSIGNING <J_3RFVATMM_ITEM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_3RFVATMM_ITEM>-BELNR_MM = 1.
<J_3RFVATMM_ITEM>-GJAHR_MM = 1.
<J_3RFVATMM_ITEM>-RBLGP = 1.
<J_3RFVATMM_ITEM>-MATNR = 1.
<J_3RFVATMM_ITEM>-MAKTX = 1.

ENDLOOP.

LOOP AT IT_J_3RFVATMM_ITEM INTO WA_J_3RFVATMM_ITEM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_3RFVATMM_ITEM-STAWN, sy-vline,
  WA_J_3RFVATMM_ITEM-MENGE, sy-vline,
  WA_J_3RFVATMM_ITEM-MEINS, sy-vline,
  WA_J_3RFVATMM_ITEM-MSEHT, sy-vline,
  WA_J_3RFVATMM_ITEM-MSEH6, sy-vline,
  WA_J_3RFVATMM_ITEM-WRBTR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_3RFVATMM_ITEM 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_J_3RFVATMM_ITEM 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_J_3RFVATMM_ITEM INTO WA_J_3RFVATMM_ITEM.


*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_MM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_3RFVATMM_ITEM-BELNR_MM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RFVATMM_ITEM-BELNR_MM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR_MM
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_J_3RFVATMM_ITEM-GJAHR_MM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RFVATMM_ITEM-GJAHR_MM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_J_3RFVATMM_ITEM-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RFVATMM_ITEM-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_J_3RFVATMM_ITEM-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RFVATMM_ITEM-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field WRBTR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_J_3RFVATMM_ITEM-WRBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RFVATMM_ITEM-WRBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field KURSF
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_J_3RFVATMM_ITEM-KURSF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RFVATMM_ITEM-KURSF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field HWBAS_EXCISE
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_J_3RFVATMM_ITEM-HWBAS_EXCISE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RFVATMM_ITEM-HWBAS_EXCISE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field HWBAS
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_J_3RFVATMM_ITEM-HWBAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RFVATMM_ITEM-HWBAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field HWSTE_EXCISE
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_J_3RFVATMM_ITEM-HWSTE_EXCISE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RFVATMM_ITEM-HWSTE_EXCISE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field HWSTE
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_J_3RFVATMM_ITEM-HWSTE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RFVATMM_ITEM-HWSTE.
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_J_3RFVATMM_ITEM_STR, 
BELNR_MM TYPE STRING,
GJAHR_MM TYPE STRING,
RBLGP TYPE STRING,
MATNR TYPE STRING,
MAKTX TYPE STRING,
STAWN TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
MSEHT TYPE STRING,
MSEH6 TYPE STRING,
WRBTR TYPE STRING,
WAERS TYPE STRING,
ALTWR TYPE STRING,
KURSF TYPE STRING,
KURSF_CHAR TYPE STRING,
HWAER TYPE STRING,
DELIVERY_NUM TYPE STRING,
DELIVERY_DT TYPE STRING,
INVOICE_NUM TYPE STRING,
INVOICE_BLDAT TYPE STRING,
GR_BLDAT TYPE STRING,
HWBAS_EXCISE TYPE STRING,
MSEH6_EXCISE TYPE STRING,
HWBAS TYPE STRING,
KBETR_SOLID TYPE STRING,
KBETR_ADVALOREM TYPE STRING,
KBETR TYPE STRING,
HWSTE_EXCISE TYPE STRING,
HWSTE TYPE STRING,
NON_VAT TYPE STRING,
NON_EXCISE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_3RFVATMM_ITEM_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_J_3RFVATMM_ITEM_STR-BELNR_MM sy-vline 
WA_J_3RFVATMM_ITEM_STR-GJAHR_MM sy-vline 
WA_J_3RFVATMM_ITEM_STR-RBLGP sy-vline 
WA_J_3RFVATMM_ITEM_STR-MATNR sy-vline 
WA_J_3RFVATMM_ITEM_STR-MAKTX sy-vline 
WA_J_3RFVATMM_ITEM_STR-STAWN sy-vline 
WA_J_3RFVATMM_ITEM_STR-MENGE sy-vline 
WA_J_3RFVATMM_ITEM_STR-MEINS sy-vline 
WA_J_3RFVATMM_ITEM_STR-MSEHT sy-vline 
WA_J_3RFVATMM_ITEM_STR-MSEH6 sy-vline 
WA_J_3RFVATMM_ITEM_STR-WRBTR sy-vline 
WA_J_3RFVATMM_ITEM_STR-WAERS sy-vline 
WA_J_3RFVATMM_ITEM_STR-ALTWR sy-vline 
WA_J_3RFVATMM_ITEM_STR-KURSF sy-vline 
WA_J_3RFVATMM_ITEM_STR-KURSF_CHAR sy-vline 
WA_J_3RFVATMM_ITEM_STR-HWAER sy-vline 
WA_J_3RFVATMM_ITEM_STR-DELIVERY_NUM sy-vline 
WA_J_3RFVATMM_ITEM_STR-DELIVERY_DT sy-vline 
WA_J_3RFVATMM_ITEM_STR-INVOICE_NUM sy-vline 
WA_J_3RFVATMM_ITEM_STR-INVOICE_BLDAT sy-vline 
WA_J_3RFVATMM_ITEM_STR-GR_BLDAT sy-vline 
WA_J_3RFVATMM_ITEM_STR-HWBAS_EXCISE sy-vline 
WA_J_3RFVATMM_ITEM_STR-MSEH6_EXCISE sy-vline 
WA_J_3RFVATMM_ITEM_STR-HWBAS sy-vline 
WA_J_3RFVATMM_ITEM_STR-KBETR_SOLID sy-vline 
WA_J_3RFVATMM_ITEM_STR-KBETR_ADVALOREM sy-vline 
WA_J_3RFVATMM_ITEM_STR-KBETR sy-vline 
WA_J_3RFVATMM_ITEM_STR-HWSTE_EXCISE sy-vline 
WA_J_3RFVATMM_ITEM_STR-HWSTE sy-vline 
WA_J_3RFVATMM_ITEM_STR-NON_VAT sy-vline 
WA_J_3RFVATMM_ITEM_STR-NON_EXCISE sy-vline      INTO ld_text SEPARATED BY SPACE.

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