ABAP Select data from SAP table GMKU_S_LINE_ID into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GMKU_S_LINE_ID
*  INTO TABLE @DATA(IT_GMKU_S_LINE_ID2).
*--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_GMKU_S_LINE_ID INDEX 1 INTO DATA(WA_GMKU_S_LINE_ID2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GMKU_S_LINE_ID>-ID = 1.
<GMKU_S_LINE_ID>-LINENB = 1.
<GMKU_S_LINE_ID>-COMPANY_CODE = 1.
<GMKU_S_LINE_ID>-ADDRESS = 1.
<GMKU_S_LINE_ID>-GRANT_NBR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GMKU_S_LINE_ID-FUND, sy-vline,
  WA_GMKU_S_LINE_ID-SPONSORED_PROG, sy-vline,
  WA_GMKU_S_LINE_ID-SPONSORED_CLASS, sy-vline,
  WA_GMKU_S_LINE_ID-BDGT_VLDTY_NBR, sy-vline,
  WA_GMKU_S_LINE_ID-USERDIM, sy-vline,
  WA_GMKU_S_LINE_ID-VERSION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GMKU_S_LINE_ID 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_GMKU_S_LINE_ID 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_GMKU_S_LINE_ID INTO WA_GMKU_S_LINE_ID.


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

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

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

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

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

*Conversion exit GJAHR, internal->external for field ORG_FISCAL_YEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_GMKU_S_LINE_ID-ORG_FISCAL_YEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GMKU_S_LINE_ID-ORG_FISCAL_YEAR.
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_GMKU_S_LINE_ID_STR, 
ID TYPE STRING,
LINENB TYPE STRING,
COMPANY_CODE TYPE STRING,
ADDRESS TYPE STRING,
GRANT_NBR TYPE STRING,
FUND TYPE STRING,
SPONSORED_PROG TYPE STRING,
SPONSORED_CLASS TYPE STRING,
BDGT_VLDTY_NBR TYPE STRING,
USERDIM TYPE STRING,
VERSION TYPE STRING,
FISCYEAR TYPE STRING,
CEFFYEAR TYPE STRING,
BUDCAT TYPE STRING,
VALTYPE TYPE STRING,
WFSTATE TYPE STRING,
PROCESS TYPE STRING,
BUDTYPE TYPE STRING,
FLG_UNDO TYPE STRING,
FLG_ADDED TYPE STRING,
CTEM_CATEGORY TYPE STRING,
RPMAX TYPE STRING,
ORG_FISCAL_YEAR TYPE STRING,
TVAL01 TYPE STRING,
TVAL02 TYPE STRING,
TVAL03 TYPE STRING,
TVAL04 TYPE STRING,
TVAL05 TYPE STRING,
TVAL06 TYPE STRING,
TVAL07 TYPE STRING,
TVAL08 TYPE STRING,
TVAL09 TYPE STRING,
TVAL10 TYPE STRING,
TVAL11 TYPE STRING,
TVAL12 TYPE STRING,
TVAL13 TYPE STRING,
TVAL14 TYPE STRING,
TVAL15 TYPE STRING,
TVAL16 TYPE STRING,
LVAL01 TYPE STRING,
LVAL02 TYPE STRING,
LVAL03 TYPE STRING,
LVAL04 TYPE STRING,
LVAL05 TYPE STRING,
LVAL06 TYPE STRING,
LVAL07 TYPE STRING,
LVAL08 TYPE STRING,
LVAL09 TYPE STRING,
LVAL10 TYPE STRING,
LVAL11 TYPE STRING,
LVAL12 TYPE STRING,
LVAL13 TYPE STRING,
LVAL14 TYPE STRING,
LVAL15 TYPE STRING,
LVAL16 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GMKU_S_LINE_ID_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_GMKU_S_LINE_ID_STR-ID sy-vline 
WA_GMKU_S_LINE_ID_STR-LINENB sy-vline 
WA_GMKU_S_LINE_ID_STR-COMPANY_CODE sy-vline 
WA_GMKU_S_LINE_ID_STR-ADDRESS sy-vline 
WA_GMKU_S_LINE_ID_STR-GRANT_NBR sy-vline 
WA_GMKU_S_LINE_ID_STR-FUND sy-vline 
WA_GMKU_S_LINE_ID_STR-SPONSORED_PROG sy-vline 
WA_GMKU_S_LINE_ID_STR-SPONSORED_CLASS sy-vline 
WA_GMKU_S_LINE_ID_STR-BDGT_VLDTY_NBR sy-vline 
WA_GMKU_S_LINE_ID_STR-USERDIM sy-vline 
WA_GMKU_S_LINE_ID_STR-VERSION sy-vline 
WA_GMKU_S_LINE_ID_STR-FISCYEAR sy-vline 
WA_GMKU_S_LINE_ID_STR-CEFFYEAR sy-vline 
WA_GMKU_S_LINE_ID_STR-BUDCAT sy-vline 
WA_GMKU_S_LINE_ID_STR-VALTYPE sy-vline 
WA_GMKU_S_LINE_ID_STR-WFSTATE sy-vline 
WA_GMKU_S_LINE_ID_STR-PROCESS sy-vline 
WA_GMKU_S_LINE_ID_STR-BUDTYPE sy-vline 
WA_GMKU_S_LINE_ID_STR-FLG_UNDO sy-vline 
WA_GMKU_S_LINE_ID_STR-FLG_ADDED sy-vline 
WA_GMKU_S_LINE_ID_STR-CTEM_CATEGORY sy-vline 
WA_GMKU_S_LINE_ID_STR-RPMAX sy-vline 
WA_GMKU_S_LINE_ID_STR-ORG_FISCAL_YEAR sy-vline 
WA_GMKU_S_LINE_ID_STR-TVAL01 sy-vline 
WA_GMKU_S_LINE_ID_STR-TVAL02 sy-vline 
WA_GMKU_S_LINE_ID_STR-TVAL03 sy-vline 
WA_GMKU_S_LINE_ID_STR-TVAL04 sy-vline 
WA_GMKU_S_LINE_ID_STR-TVAL05 sy-vline 
WA_GMKU_S_LINE_ID_STR-TVAL06 sy-vline 
WA_GMKU_S_LINE_ID_STR-TVAL07 sy-vline 
WA_GMKU_S_LINE_ID_STR-TVAL08 sy-vline 
WA_GMKU_S_LINE_ID_STR-TVAL09 sy-vline 
WA_GMKU_S_LINE_ID_STR-TVAL10 sy-vline 
WA_GMKU_S_LINE_ID_STR-TVAL11 sy-vline 
WA_GMKU_S_LINE_ID_STR-TVAL12 sy-vline 
WA_GMKU_S_LINE_ID_STR-TVAL13 sy-vline 
WA_GMKU_S_LINE_ID_STR-TVAL14 sy-vline 
WA_GMKU_S_LINE_ID_STR-TVAL15 sy-vline 
WA_GMKU_S_LINE_ID_STR-TVAL16 sy-vline 
WA_GMKU_S_LINE_ID_STR-LVAL01 sy-vline 
WA_GMKU_S_LINE_ID_STR-LVAL02 sy-vline 
WA_GMKU_S_LINE_ID_STR-LVAL03 sy-vline 
WA_GMKU_S_LINE_ID_STR-LVAL04 sy-vline 
WA_GMKU_S_LINE_ID_STR-LVAL05 sy-vline 
WA_GMKU_S_LINE_ID_STR-LVAL06 sy-vline 
WA_GMKU_S_LINE_ID_STR-LVAL07 sy-vline 
WA_GMKU_S_LINE_ID_STR-LVAL08 sy-vline 
WA_GMKU_S_LINE_ID_STR-LVAL09 sy-vline 
WA_GMKU_S_LINE_ID_STR-LVAL10 sy-vline 
WA_GMKU_S_LINE_ID_STR-LVAL11 sy-vline 
WA_GMKU_S_LINE_ID_STR-LVAL12 sy-vline 
WA_GMKU_S_LINE_ID_STR-LVAL13 sy-vline 
WA_GMKU_S_LINE_ID_STR-LVAL14 sy-vline 
WA_GMKU_S_LINE_ID_STR-LVAL15 sy-vline 
WA_GMKU_S_LINE_ID_STR-LVAL16 sy-vline      INTO ld_text SEPARATED BY SPACE.

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