ABAP Select data from SAP table IFMRPWTHEADERD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IFMRPWTHEADERD
*  INTO TABLE @DATA(IT_IFMRPWTHEADERD2).
*--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_IFMRPWTHEADERD INDEX 1 INTO DATA(WA_IFMRPWTHEADERD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IFMRPWTHEADERD>-INTERNAL_ID = 1.
<IFMRPWTHEADERD>-BLART = 1.
<IFMRPWTHEADERD>-BUKRS = 1.
<IFMRPWTHEADERD>-BLDAT = 1.
<IFMRPWTHEADERD>-BUDAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IFMRPWTHEADERD-MONAT, sy-vline,
  WA_IFMRPWTHEADERD-WAERS, sy-vline,
  WA_IFMRPWTHEADERD-KURSF, sy-vline,
  WA_IFMRPWTHEADERD-WWERT, sy-vline,
  WA_IFMRPWTHEADERD-XBLNR, sy-vline,
  WA_IFMRPWTHEADERD-BKTXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IFMRPWTHEADERD 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_IFMRPWTHEADERD 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_IFMRPWTHEADERD INTO WA_IFMRPWTHEADERD.


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

*Conversion exit EXCRT, internal->external for field KURSF_CL
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_IFMRPWTHEADERD-KURSF_CL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IFMRPWTHEADERD-KURSF_CL.
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_IFMRPWTHEADERD_STR, 
INTERNAL_ID TYPE STRING,
BLART TYPE STRING,
BUKRS TYPE STRING,
BLDAT TYPE STRING,
BUDAT TYPE STRING,
MONAT TYPE STRING,
WAERS TYPE STRING,
KURSF TYPE STRING,
WWERT TYPE STRING,
XBLNR TYPE STRING,
BKTXT TYPE STRING,
REV_XREF1_HD TYPE STRING,
REV_XREF2_HD TYPE STRING,
BLART_CL TYPE STRING,
BUKRS_CL TYPE STRING,
BLDAT_CL TYPE STRING,
BUDAT_CL TYPE STRING,
MONAT_CL TYPE STRING,
WAERS_CL TYPE STRING,
KURSF_CL TYPE STRING,
WWERT_CL TYPE STRING,
XBLNR_CL TYPE STRING,
BKTXT_CL TYPE STRING,
AUGTX_CL TYPE STRING,
AUGLV_CL TYPE STRING,
COLORTAB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IFMRPWTHEADERD_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_IFMRPWTHEADERD_STR-INTERNAL_ID sy-vline 
WA_IFMRPWTHEADERD_STR-BLART sy-vline 
WA_IFMRPWTHEADERD_STR-BUKRS sy-vline 
WA_IFMRPWTHEADERD_STR-BLDAT sy-vline 
WA_IFMRPWTHEADERD_STR-BUDAT sy-vline 
WA_IFMRPWTHEADERD_STR-MONAT sy-vline 
WA_IFMRPWTHEADERD_STR-WAERS sy-vline 
WA_IFMRPWTHEADERD_STR-KURSF sy-vline 
WA_IFMRPWTHEADERD_STR-WWERT sy-vline 
WA_IFMRPWTHEADERD_STR-XBLNR sy-vline 
WA_IFMRPWTHEADERD_STR-BKTXT sy-vline 
WA_IFMRPWTHEADERD_STR-REV_XREF1_HD sy-vline 
WA_IFMRPWTHEADERD_STR-REV_XREF2_HD sy-vline 
WA_IFMRPWTHEADERD_STR-BLART_CL sy-vline 
WA_IFMRPWTHEADERD_STR-BUKRS_CL sy-vline 
WA_IFMRPWTHEADERD_STR-BLDAT_CL sy-vline 
WA_IFMRPWTHEADERD_STR-BUDAT_CL sy-vline 
WA_IFMRPWTHEADERD_STR-MONAT_CL sy-vline 
WA_IFMRPWTHEADERD_STR-WAERS_CL sy-vline 
WA_IFMRPWTHEADERD_STR-KURSF_CL sy-vline 
WA_IFMRPWTHEADERD_STR-WWERT_CL sy-vline 
WA_IFMRPWTHEADERD_STR-XBLNR_CL sy-vline 
WA_IFMRPWTHEADERD_STR-BKTXT_CL sy-vline 
WA_IFMRPWTHEADERD_STR-AUGTX_CL sy-vline 
WA_IFMRPWTHEADERD_STR-AUGLV_CL sy-vline 
WA_IFMRPWTHEADERD_STR-COLORTAB sy-vline      INTO ld_text SEPARATED BY SPACE.

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