ABAP Select data from SAP table J_3GV_J3GPA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_3GV_J3GPA 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_3GV_J3GPA. 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_3GV_J3GPA 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_3GV_J3GPA TYPE STANDARD TABLE OF J_3GV_J3GPA,
      WA_J_3GV_J3GPA TYPE J_3GV_J3GPA,
      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_3GV_J3GPA> TYPE J_3GV_J3GPA.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_3GV_J3GPA.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_3GV_J3GPA
  INTO TABLE IT_J_3GV_J3GPA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_3GV_J3GPA
*  INTO TABLE @DATA(IT_J_3GV_J3GPA2).
*--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_3GV_J3GPA INDEX 1 INTO DATA(WA_J_3GV_J3GPA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_3GV_J3GPA ASSIGNING <J_3GV_J3GPA>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_3GV_J3GPA>-MANDT = 1.
<J_3GV_J3GPA>-PSPNR = 1.
<J_3GV_J3GPA>-POSID = 1.
<J_3GV_J3GPA>-POST1 = 1.
<J_3GV_J3GPA>-OBJNR = 1.

ENDLOOP.

LOOP AT IT_J_3GV_J3GPA INTO WA_J_3GV_J3GPA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_3GV_J3GPA-PSPHI, sy-vline,
  WA_J_3GV_J3GPA-POSKI, sy-vline,
  WA_J_3GV_J3GPA-ERNAM, sy-vline,
  WA_J_3GV_J3GPA-ERDAT, sy-vline,
  WA_J_3GV_J3GPA-STAT, sy-vline,
  WA_J_3GV_J3GPA-INACT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_3GV_J3GPA 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_3GV_J3GPA 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_3GV_J3GPA INTO WA_J_3GV_J3GPA.


*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 ABPSP, internal->external for field PSPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_J_3GV_J3GPA-PSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3GV_J3GPA-PSPNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSN, internal->external for field POSID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_J_3GV_J3GPA-POSID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3GV_J3GPA-POSID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit KONPD, internal->external for field PSPHI
CALL FUNCTION 'CONVERSION_EXIT_KONPD_OUTPUT'
  EXPORTING
    input =                      WA_J_3GV_J3GPA-PSPHI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3GV_J3GPA-PSPHI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRCTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_3GV_J3GPA-PRCTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3GV_J3GPA-PRCTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AKSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_3GV_J3GPA-AKSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3GV_J3GPA-AKSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FKSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_3GV_J3GPA-FKSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3GV_J3GPA-FKSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EQUNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_3GV_J3GPA-EQUNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3GV_J3GPA-EQUNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TPLNR, internal->external for field TPLNR
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_J_3GV_J3GPA-TPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3GV_J3GPA-TPLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field TXTSP
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_J_3GV_J3GPA-TXTSP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3GV_J3GPA-TXTSP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_3GV_J3GPA-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3GV_J3GPA-KOSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit KONPT, internal->external for field SPSNR
CALL FUNCTION 'CONVERSION_EXIT_KONPT_OUTPUT'
  EXPORTING
    input =                      WA_J_3GV_J3GPA-SPSNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3GV_J3GPA-SPSNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SCOPE, internal->external for field SCOPE
CALL FUNCTION 'CONVERSION_EXIT_SCOPE_OUTPUT'
  EXPORTING
    input =                      WA_J_3GV_J3GPA-SCOPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3GV_J3GPA-SCOPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AENNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_3GV_J3GPA-AENNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3GV_J3GPA-AENNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ISIZE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_3GV_J3GPA-ISIZE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_3GV_J3GPA-ISIZE.
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_3GV_J3GPA_STR, 
MANDT TYPE STRING,
PSPNR TYPE STRING,
POSID TYPE STRING,
POST1 TYPE STRING,
OBJNR TYPE STRING,
PSPHI TYPE STRING,
POSKI TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
STAT TYPE STRING,
INACT TYPE STRING,
PBUKR TYPE STRING,
PGSBR TYPE STRING,
PKOKR TYPE STRING,
PRCTR TYPE STRING,
PRART TYPE STRING,
STUFE TYPE STRING,
PLAKZ TYPE STRING,
BELKZ TYPE STRING,
FAKKZ TYPE STRING,
NPFAZ TYPE STRING,
ZUORD TYPE STRING,
TRMEQ TYPE STRING,
KVEWE TYPE STRING,
KAPPL TYPE STRING,
KALSM TYPE STRING,
ZSCHL TYPE STRING,
ABGSL TYPE STRING,
AKOKR TYPE STRING,
AKSTL TYPE STRING,
FKOKR TYPE STRING,
FKSTL TYPE STRING,
FABKL TYPE STRING,
PSPRI TYPE STRING,
EQUNR TYPE STRING,
TPLNR TYPE STRING,
PWPOS TYPE STRING,
WERKS TYPE STRING,
TXTSP TYPE STRING,
KOSTL TYPE STRING,
KTRG TYPE STRING,
BERST TYPE STRING,
BERTR TYPE STRING,
BERKO TYPE STRING,
BERBU TYPE STRING,
CLASF TYPE STRING,
SPSNR TYPE STRING,
SCOPE TYPE STRING,
XSTAT TYPE STRING,
TXJCD TYPE STRING,
ZSCHM TYPE STRING,
IMPRF TYPE STRING,
EVGEW TYPE STRING,
AENNR TYPE STRING,
SUBPR TYPE STRING,
POSTU TYPE STRING,
PLINT TYPE STRING,
LOEVM TYPE STRING,
KZBWS TYPE STRING,
FPLNR TYPE STRING,
TADAT TYPE STRING,
IZWEK TYPE STRING,
ISIZE TYPE STRING,
IUMKZ TYPE STRING,
ABUKR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_3GV_J3GPA_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_3GV_J3GPA_STR-MANDT sy-vline 
WA_J_3GV_J3GPA_STR-PSPNR sy-vline 
WA_J_3GV_J3GPA_STR-POSID sy-vline 
WA_J_3GV_J3GPA_STR-POST1 sy-vline 
WA_J_3GV_J3GPA_STR-OBJNR sy-vline 
WA_J_3GV_J3GPA_STR-PSPHI sy-vline 
WA_J_3GV_J3GPA_STR-POSKI sy-vline 
WA_J_3GV_J3GPA_STR-ERNAM sy-vline 
WA_J_3GV_J3GPA_STR-ERDAT sy-vline 
WA_J_3GV_J3GPA_STR-STAT sy-vline 
WA_J_3GV_J3GPA_STR-INACT sy-vline 
WA_J_3GV_J3GPA_STR-PBUKR sy-vline 
WA_J_3GV_J3GPA_STR-PGSBR sy-vline 
WA_J_3GV_J3GPA_STR-PKOKR sy-vline 
WA_J_3GV_J3GPA_STR-PRCTR sy-vline 
WA_J_3GV_J3GPA_STR-PRART sy-vline 
WA_J_3GV_J3GPA_STR-STUFE sy-vline 
WA_J_3GV_J3GPA_STR-PLAKZ sy-vline 
WA_J_3GV_J3GPA_STR-BELKZ sy-vline 
WA_J_3GV_J3GPA_STR-FAKKZ sy-vline 
WA_J_3GV_J3GPA_STR-NPFAZ sy-vline 
WA_J_3GV_J3GPA_STR-ZUORD sy-vline 
WA_J_3GV_J3GPA_STR-TRMEQ sy-vline 
WA_J_3GV_J3GPA_STR-KVEWE sy-vline 
WA_J_3GV_J3GPA_STR-KAPPL sy-vline 
WA_J_3GV_J3GPA_STR-KALSM sy-vline 
WA_J_3GV_J3GPA_STR-ZSCHL sy-vline 
WA_J_3GV_J3GPA_STR-ABGSL sy-vline 
WA_J_3GV_J3GPA_STR-AKOKR sy-vline 
WA_J_3GV_J3GPA_STR-AKSTL sy-vline 
WA_J_3GV_J3GPA_STR-FKOKR sy-vline 
WA_J_3GV_J3GPA_STR-FKSTL sy-vline 
WA_J_3GV_J3GPA_STR-FABKL sy-vline 
WA_J_3GV_J3GPA_STR-PSPRI sy-vline 
WA_J_3GV_J3GPA_STR-EQUNR sy-vline 
WA_J_3GV_J3GPA_STR-TPLNR sy-vline 
WA_J_3GV_J3GPA_STR-PWPOS sy-vline 
WA_J_3GV_J3GPA_STR-WERKS sy-vline 
WA_J_3GV_J3GPA_STR-TXTSP sy-vline 
WA_J_3GV_J3GPA_STR-KOSTL sy-vline 
WA_J_3GV_J3GPA_STR-KTRG sy-vline 
WA_J_3GV_J3GPA_STR-BERST sy-vline 
WA_J_3GV_J3GPA_STR-BERTR sy-vline 
WA_J_3GV_J3GPA_STR-BERKO sy-vline 
WA_J_3GV_J3GPA_STR-BERBU sy-vline 
WA_J_3GV_J3GPA_STR-CLASF sy-vline 
WA_J_3GV_J3GPA_STR-SPSNR sy-vline 
WA_J_3GV_J3GPA_STR-SCOPE sy-vline 
WA_J_3GV_J3GPA_STR-XSTAT sy-vline 
WA_J_3GV_J3GPA_STR-TXJCD sy-vline 
WA_J_3GV_J3GPA_STR-ZSCHM sy-vline 
WA_J_3GV_J3GPA_STR-IMPRF sy-vline 
WA_J_3GV_J3GPA_STR-EVGEW sy-vline 
WA_J_3GV_J3GPA_STR-AENNR sy-vline 
WA_J_3GV_J3GPA_STR-SUBPR sy-vline 
WA_J_3GV_J3GPA_STR-POSTU sy-vline 
WA_J_3GV_J3GPA_STR-PLINT sy-vline 
WA_J_3GV_J3GPA_STR-LOEVM sy-vline 
WA_J_3GV_J3GPA_STR-KZBWS sy-vline 
WA_J_3GV_J3GPA_STR-FPLNR sy-vline 
WA_J_3GV_J3GPA_STR-TADAT sy-vline 
WA_J_3GV_J3GPA_STR-IZWEK sy-vline 
WA_J_3GV_J3GPA_STR-ISIZE sy-vline 
WA_J_3GV_J3GPA_STR-IUMKZ sy-vline 
WA_J_3GV_J3GPA_STR-ABUKR sy-vline      INTO ld_text SEPARATED BY SPACE.

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