ABAP Select data from SAP table FMCA_DM_DUNN_HIST_HDR into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FMCA_DM_DUNN_HIST_HDR
*  INTO TABLE @DATA(IT_FMCA_DM_DUNN_HIST_HDR2).
*--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_FMCA_DM_DUNN_HIST_HDR INDEX 1 INTO DATA(WA_FMCA_DM_DUNN_HIST_HDR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FMCA_DM_DUNN_HIST_HDR>-LAUFD = 1.
<FMCA_DM_DUNN_HIST_HDR>-LAUFI = 1.
<FMCA_DM_DUNN_HIST_HDR>-GPART = 1.
<FMCA_DM_DUNN_HIST_HDR>-VKONT = 1.
<FMCA_DM_DUNN_HIST_HDR>-MAZAE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FMCA_DM_DUNN_HIST_HDR-AUSDT, sy-vline,
  WA_FMCA_DM_DUNN_HIST_HDR-WAERS, sy-vline,
  WA_FMCA_DM_DUNN_HIST_HDR-MSALM, sy-vline,
  WA_FMCA_DM_DUNN_HIST_HDR-MGE1M, sy-vline,
  WA_FMCA_DM_DUNN_HIST_HDR-MGE2M, sy-vline,
  WA_FMCA_DM_DUNN_HIST_HDR-MGE3M, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FMCA_DM_DUNN_HIST_HDR 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_FMCA_DM_DUNN_HIST_HDR 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_FMCA_DM_DUNN_HIST_HDR INTO WA_FMCA_DM_DUNN_HIST_HDR.


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

*Conversion exit ALPHA, internal->external for field VKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FMCA_DM_DUNN_HIST_HDR-VKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMCA_DM_DUNN_HIST_HDR-VKONT.
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_FMCA_DM_DUNN_HIST_HDR_STR, 
LAUFD TYPE STRING,
LAUFI TYPE STRING,
GPART TYPE STRING,
VKONT TYPE STRING,
MAZAE TYPE STRING,
AUSDT TYPE STRING,
WAERS TYPE STRING,
MSALM TYPE STRING,
MGE1M TYPE STRING,
MGE2M TYPE STRING,
MGE3M TYPE STRING,
MINTM TYPE STRING,
XMSTO TYPE STRING,
STRAT TYPE STRING,
STEP TYPE STRING,
STEP_LAST TYPE STRING,
DEBT_SET TYPE STRING,
SUCPC TYPE STRING,
SUCDT TYPE STRING,
SCDST TYPE STRING,
SCORE TYPE STRING,
RANK TYPE STRING,
KATALOGART TYPE STRING,
CODEGRUPPE TYPE STRING,
CODE TYPE STRING,
RC_USER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FMCA_DM_DUNN_HIST_HDR_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_FMCA_DM_DUNN_HIST_HDR_STR-LAUFD sy-vline 
WA_FMCA_DM_DUNN_HIST_HDR_STR-LAUFI sy-vline 
WA_FMCA_DM_DUNN_HIST_HDR_STR-GPART sy-vline 
WA_FMCA_DM_DUNN_HIST_HDR_STR-VKONT sy-vline 
WA_FMCA_DM_DUNN_HIST_HDR_STR-MAZAE sy-vline 
WA_FMCA_DM_DUNN_HIST_HDR_STR-AUSDT sy-vline 
WA_FMCA_DM_DUNN_HIST_HDR_STR-WAERS sy-vline 
WA_FMCA_DM_DUNN_HIST_HDR_STR-MSALM sy-vline 
WA_FMCA_DM_DUNN_HIST_HDR_STR-MGE1M sy-vline 
WA_FMCA_DM_DUNN_HIST_HDR_STR-MGE2M sy-vline 
WA_FMCA_DM_DUNN_HIST_HDR_STR-MGE3M sy-vline 
WA_FMCA_DM_DUNN_HIST_HDR_STR-MINTM sy-vline 
WA_FMCA_DM_DUNN_HIST_HDR_STR-XMSTO sy-vline 
WA_FMCA_DM_DUNN_HIST_HDR_STR-STRAT sy-vline 
WA_FMCA_DM_DUNN_HIST_HDR_STR-STEP sy-vline 
WA_FMCA_DM_DUNN_HIST_HDR_STR-STEP_LAST sy-vline 
WA_FMCA_DM_DUNN_HIST_HDR_STR-DEBT_SET sy-vline 
WA_FMCA_DM_DUNN_HIST_HDR_STR-SUCPC sy-vline 
WA_FMCA_DM_DUNN_HIST_HDR_STR-SUCDT sy-vline 
WA_FMCA_DM_DUNN_HIST_HDR_STR-SCDST sy-vline 
WA_FMCA_DM_DUNN_HIST_HDR_STR-SCORE sy-vline 
WA_FMCA_DM_DUNN_HIST_HDR_STR-RANK sy-vline 
WA_FMCA_DM_DUNN_HIST_HDR_STR-KATALOGART sy-vline 
WA_FMCA_DM_DUNN_HIST_HDR_STR-CODEGRUPPE sy-vline 
WA_FMCA_DM_DUNN_HIST_HDR_STR-CODE sy-vline 
WA_FMCA_DM_DUNN_HIST_HDR_STR-RC_USER sy-vline      INTO ld_text SEPARATED BY SPACE.

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