ABAP Select data from SAP table J_3RF_GTD_S_MASSALV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_3RF_GTD_S_MASSALV 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_3RF_GTD_S_MASSALV. 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_3RF_GTD_S_MASSALV 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_3RF_GTD_S_MASSALV TYPE STANDARD TABLE OF J_3RF_GTD_S_MASSALV,
      WA_J_3RF_GTD_S_MASSALV TYPE J_3RF_GTD_S_MASSALV,
      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_3RF_GTD_S_MASSALV> TYPE J_3RF_GTD_S_MASSALV.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_3RF_GTD_S_MASSALV.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_3RF_GTD_S_MASSALV
  INTO TABLE IT_J_3RF_GTD_S_MASSALV.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_3RF_GTD_S_MASSALV
*  INTO TABLE @DATA(IT_J_3RF_GTD_S_MASSALV2).
*--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_3RF_GTD_S_MASSALV INDEX 1 INTO DATA(WA_J_3RF_GTD_S_MASSALV2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_3RF_GTD_S_MASSALV ASSIGNING <J_3RF_GTD_S_MASSALV>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_3RF_GTD_S_MASSALV>-ERROR_STATUS = 1.
<J_3RF_GTD_S_MASSALV>-MANDT = 1.
<J_3RF_GTD_S_MASSALV>-GTD_ID = 1.
<J_3RF_GTD_S_MASSALV>-GTDPOS = 1.
<J_3RF_GTD_S_MASSALV>-CUSTOMS = 1.

ENDLOOP.

LOOP AT IT_J_3RF_GTD_S_MASSALV INTO WA_J_3RF_GTD_S_MASSALV.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_3RF_GTD_S_MASSALV-GTDDATE, sy-vline,
  WA_J_3RF_GTD_S_MASSALV-GTDNUMBER, sy-vline,
  WA_J_3RF_GTD_S_MASSALV-BUKRS, sy-vline,
  WA_J_3RF_GTD_S_MASSALV-BUTXT, sy-vline,
  WA_J_3RF_GTD_S_MASSALV-LIFNR, sy-vline,
  WA_J_3RF_GTD_S_MASSALV-LIFNRNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_3RF_GTD_S_MASSALV 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_3RF_GTD_S_MASSALV 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_3RF_GTD_S_MASSALV INTO WA_J_3RF_GTD_S_MASSALV.


*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 GTD_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_3RF_GTD_S_MASSALV-GTD_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RF_GTD_S_MASSALV-GTD_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_3RF_GTD_S_MASSALV-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RF_GTD_S_MASSALV-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_J_3RF_GTD_S_MASSALV-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RF_GTD_S_MASSALV-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_J_3RF_GTD_S_MASSALV-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RF_GTD_S_MASSALV-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ORDERNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_3RF_GTD_S_MASSALV-ORDERNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RF_GTD_S_MASSALV-ORDERNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field INDELNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_3RF_GTD_S_MASSALV-INDELNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RF_GTD_S_MASSALV-INDELNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MMDOCNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_3RF_GTD_S_MASSALV-MMDOCNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RF_GTD_S_MASSALV-MMDOCNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field MMDOCJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_J_3RF_GTD_S_MASSALV-MMDOCJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RF_GTD_S_MASSALV-MMDOCJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_3RF_GTD_S_MASSALV-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RF_GTD_S_MASSALV-EBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field PMEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_J_3RF_GTD_S_MASSALV-PMEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3RF_GTD_S_MASSALV-PMEINS.
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_3RF_GTD_S_MASSALV_STR, 
ERROR_STATUS TYPE STRING,
MANDT TYPE STRING,
GTD_ID TYPE STRING,
GTDPOS TYPE STRING,
CUSTOMS TYPE STRING,
GTDDATE TYPE STRING,
GTDNUMBER TYPE STRING,
BUKRS TYPE STRING,
BUTXT TYPE STRING,
LIFNR TYPE STRING,
LIFNRNAME TYPE STRING,
TYPE TYPE STRING,
ISSUEDAT TYPE STRING,
MATNR TYPE STRING,
MAKTX TYPE STRING,
HERKL TYPE STRING,
LANDX TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
STATUS TYPE STRING,
ORDERNUM TYPE STRING,
ORDERPOS TYPE STRING,
INDELNUM TYPE STRING,
INDELPOS TYPE STRING,
MMDOCNUM TYPE STRING,
MMDOCPOS TYPE STRING,
MMDOCJAHR TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
WAERS TYPE STRING,
PMENGE TYPE STRING,
PMEINS TYPE STRING,
POSNR TYPE STRING,
GTDTYPE TYPE STRING,
ROWNUMBER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_3RF_GTD_S_MASSALV_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_3RF_GTD_S_MASSALV_STR-ERROR_STATUS sy-vline 
WA_J_3RF_GTD_S_MASSALV_STR-MANDT sy-vline 
WA_J_3RF_GTD_S_MASSALV_STR-GTD_ID sy-vline 
WA_J_3RF_GTD_S_MASSALV_STR-GTDPOS sy-vline 
WA_J_3RF_GTD_S_MASSALV_STR-CUSTOMS sy-vline 
WA_J_3RF_GTD_S_MASSALV_STR-GTDDATE sy-vline 
WA_J_3RF_GTD_S_MASSALV_STR-GTDNUMBER sy-vline 
WA_J_3RF_GTD_S_MASSALV_STR-BUKRS sy-vline 
WA_J_3RF_GTD_S_MASSALV_STR-BUTXT sy-vline 
WA_J_3RF_GTD_S_MASSALV_STR-LIFNR sy-vline 
WA_J_3RF_GTD_S_MASSALV_STR-LIFNRNAME sy-vline 
WA_J_3RF_GTD_S_MASSALV_STR-TYPE sy-vline 
WA_J_3RF_GTD_S_MASSALV_STR-ISSUEDAT sy-vline 
WA_J_3RF_GTD_S_MASSALV_STR-MATNR sy-vline 
WA_J_3RF_GTD_S_MASSALV_STR-MAKTX sy-vline 
WA_J_3RF_GTD_S_MASSALV_STR-HERKL sy-vline 
WA_J_3RF_GTD_S_MASSALV_STR-LANDX sy-vline 
WA_J_3RF_GTD_S_MASSALV_STR-MENGE sy-vline 
WA_J_3RF_GTD_S_MASSALV_STR-MEINS sy-vline 
WA_J_3RF_GTD_S_MASSALV_STR-STATUS sy-vline 
WA_J_3RF_GTD_S_MASSALV_STR-ORDERNUM sy-vline 
WA_J_3RF_GTD_S_MASSALV_STR-ORDERPOS sy-vline 
WA_J_3RF_GTD_S_MASSALV_STR-INDELNUM sy-vline 
WA_J_3RF_GTD_S_MASSALV_STR-INDELPOS sy-vline 
WA_J_3RF_GTD_S_MASSALV_STR-MMDOCNUM sy-vline 
WA_J_3RF_GTD_S_MASSALV_STR-MMDOCPOS sy-vline 
WA_J_3RF_GTD_S_MASSALV_STR-MMDOCJAHR sy-vline 
WA_J_3RF_GTD_S_MASSALV_STR-EBELN sy-vline 
WA_J_3RF_GTD_S_MASSALV_STR-EBELP sy-vline 
WA_J_3RF_GTD_S_MASSALV_STR-WAERS sy-vline 
WA_J_3RF_GTD_S_MASSALV_STR-PMENGE sy-vline 
WA_J_3RF_GTD_S_MASSALV_STR-PMEINS sy-vline 
WA_J_3RF_GTD_S_MASSALV_STR-POSNR sy-vline 
WA_J_3RF_GTD_S_MASSALV_STR-GTDTYPE sy-vline 
WA_J_3RF_GTD_S_MASSALV_STR-ROWNUMBER sy-vline      INTO ld_text SEPARATED BY SPACE.

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