ABAP Select data from SAP table IFMRKHPL_HEADER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IFMRKHPL_HEADER
*  INTO TABLE @DATA(IT_IFMRKHPL_HEADER2).
*--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_IFMRKHPL_HEADER INDEX 1 INTO DATA(WA_IFMRKHPL_HEADER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IFMRKHPL_HEADER>-EPL = 1.
<IFMRKHPL_HEADER>-ABSCHN = 1.
<IFMRKHPL_HEADER>-UABSCH = 1.
<IFMRKHPL_HEADER>-EINZELPLT1 = 1.
<IFMRKHPL_HEADER>-EINZELPLT2 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IFMRKHPL_HEADER-ABSCHNT1, sy-vline,
  WA_IFMRKHPL_HEADER-ABSCHNT2, sy-vline,
  WA_IFMRKHPL_HEADER-UABSCHT1, sy-vline,
  WA_IFMRKHPL_HEADER-UABSCHT2, sy-vline,
  WA_IFMRKHPL_HEADER-UABSCHT3, sy-vline,
  WA_IFMRKHPL_HEADER-VERSN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IFMRKHPL_HEADER 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_IFMRKHPL_HEADER 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_IFMRKHPL_HEADER INTO WA_IFMRKHPL_HEADER.


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

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

*Conversion exit GJAHR, internal->external for field GJAHR_VOR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_IFMRKHPL_HEADER-GJAHR_VOR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IFMRKHPL_HEADER-GJAHR_VOR.
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_IFMRKHPL_HEADER_STR, 
EPL TYPE STRING,
ABSCHN TYPE STRING,
UABSCH TYPE STRING,
EINZELPLT1 TYPE STRING,
EINZELPLT2 TYPE STRING,
ABSCHNT1 TYPE STRING,
ABSCHNT2 TYPE STRING,
UABSCHT1 TYPE STRING,
UABSCHT2 TYPE STRING,
UABSCHT3 TYPE STRING,
VERSN TYPE STRING,
VSTXT TYPE STRING,
GJAHR TYPE STRING,
GJAHR_VOR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IFMRKHPL_HEADER_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_IFMRKHPL_HEADER_STR-EPL sy-vline 
WA_IFMRKHPL_HEADER_STR-ABSCHN sy-vline 
WA_IFMRKHPL_HEADER_STR-UABSCH sy-vline 
WA_IFMRKHPL_HEADER_STR-EINZELPLT1 sy-vline 
WA_IFMRKHPL_HEADER_STR-EINZELPLT2 sy-vline 
WA_IFMRKHPL_HEADER_STR-ABSCHNT1 sy-vline 
WA_IFMRKHPL_HEADER_STR-ABSCHNT2 sy-vline 
WA_IFMRKHPL_HEADER_STR-UABSCHT1 sy-vline 
WA_IFMRKHPL_HEADER_STR-UABSCHT2 sy-vline 
WA_IFMRKHPL_HEADER_STR-UABSCHT3 sy-vline 
WA_IFMRKHPL_HEADER_STR-VERSN sy-vline 
WA_IFMRKHPL_HEADER_STR-VSTXT sy-vline 
WA_IFMRKHPL_HEADER_STR-GJAHR sy-vline 
WA_IFMRKHPL_HEADER_STR-GJAHR_VOR sy-vline      INTO ld_text SEPARATED BY SPACE.

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