ABAP Select data from SAP table FMDPEF_DOC_HEADER into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FMDPEF_DOC_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 FMDPEF_DOC_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 FMDPEF_DOC_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_FMDPEF_DOC_HEADER TYPE STANDARD TABLE OF FMDPEF_DOC_HEADER,
      WA_FMDPEF_DOC_HEADER TYPE FMDPEF_DOC_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: <FMDPEF_DOC_HEADER> TYPE FMDPEF_DOC_HEADER.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FMDPEF_DOC_HEADER
*  INTO TABLE @DATA(IT_FMDPEF_DOC_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_FMDPEF_DOC_HEADER INDEX 1 INTO DATA(WA_FMDPEF_DOC_HEADER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FMDPEF_DOC_HEADER>-BUKRS = 1.
<FMDPEF_DOC_HEADER>-LIFNR = 1.
<FMDPEF_DOC_HEADER>-ZUMSK = 1.
<FMDPEF_DOC_HEADER>-UMSKZ = 1.
<FMDPEF_DOC_HEADER>-SAKNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FMDPEF_DOC_HEADER-BLDAT, sy-vline,
  WA_FMDPEF_DOC_HEADER-BUDAT, sy-vline,
  WA_FMDPEF_DOC_HEADER-ZFBDT, sy-vline,
  WA_FMDPEF_DOC_HEADER-BLART, sy-vline,
  WA_FMDPEF_DOC_HEADER-XBLNR, sy-vline,
  WA_FMDPEF_DOC_HEADER-BKTXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FMDPEF_DOC_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_FMDPEF_DOC_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_FMDPEF_DOC_HEADER INTO WA_FMDPEF_DOC_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 LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FMDPEF_DOC_HEADER-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMDPEF_DOC_HEADER-LIFNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field EMPFB
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FMDPEF_DOC_HEADER-EMPFB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FMDPEF_DOC_HEADER-EMPFB.
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_FMDPEF_DOC_HEADER_STR, 
BUKRS TYPE STRING,
LIFNR TYPE STRING,
ZUMSK TYPE STRING,
UMSKZ TYPE STRING,
SAKNR TYPE STRING,
BLDAT TYPE STRING,
BUDAT TYPE STRING,
ZFBDT TYPE STRING,
BLART TYPE STRING,
XBLNR TYPE STRING,
BKTXT TYPE STRING,
WRBTR TYPE STRING,
DMBTR TYPE STRING,
WAERS TYPE STRING,
KURSF TYPE STRING,
WWERT TYPE STRING,
MWSKZ TYPE STRING,
XMWST TYPE STRING,
WMWST TYPE STRING,
VALUT TYPE STRING,
WSKTO TYPE STRING,
ZBD1P TYPE STRING,
ZUONR TYPE STRING,
SGTXT TYPE STRING,
BALANCE TYPE STRING,
LOCAL_WAERS TYPE STRING,
DISTR_ID TYPE STRING,
DISTR_TXT TYPE STRING,
FLG_TAX_NET TYPE STRING,
ZLSPR TYPE STRING,
ZLSCH TYPE STRING,
UZAWE TYPE STRING,
FLG_USE_EF_AMT TYPE STRING,
PERC_EF_AMOUNT TYPE STRING,
FLG_CALC_DP_AMT TYPE STRING,
HBKID TYPE STRING,
HKTID TYPE STRING,
FMDPEF_LAND1 TYPE STRING,
FMDPEF_KALSM TYPE STRING,
EMPFB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FMDPEF_DOC_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_FMDPEF_DOC_HEADER_STR-BUKRS sy-vline 
WA_FMDPEF_DOC_HEADER_STR-LIFNR sy-vline 
WA_FMDPEF_DOC_HEADER_STR-ZUMSK sy-vline 
WA_FMDPEF_DOC_HEADER_STR-UMSKZ sy-vline 
WA_FMDPEF_DOC_HEADER_STR-SAKNR sy-vline 
WA_FMDPEF_DOC_HEADER_STR-BLDAT sy-vline 
WA_FMDPEF_DOC_HEADER_STR-BUDAT sy-vline 
WA_FMDPEF_DOC_HEADER_STR-ZFBDT sy-vline 
WA_FMDPEF_DOC_HEADER_STR-BLART sy-vline 
WA_FMDPEF_DOC_HEADER_STR-XBLNR sy-vline 
WA_FMDPEF_DOC_HEADER_STR-BKTXT sy-vline 
WA_FMDPEF_DOC_HEADER_STR-WRBTR sy-vline 
WA_FMDPEF_DOC_HEADER_STR-DMBTR sy-vline 
WA_FMDPEF_DOC_HEADER_STR-WAERS sy-vline 
WA_FMDPEF_DOC_HEADER_STR-KURSF sy-vline 
WA_FMDPEF_DOC_HEADER_STR-WWERT sy-vline 
WA_FMDPEF_DOC_HEADER_STR-MWSKZ sy-vline 
WA_FMDPEF_DOC_HEADER_STR-XMWST sy-vline 
WA_FMDPEF_DOC_HEADER_STR-WMWST sy-vline 
WA_FMDPEF_DOC_HEADER_STR-VALUT sy-vline 
WA_FMDPEF_DOC_HEADER_STR-WSKTO sy-vline 
WA_FMDPEF_DOC_HEADER_STR-ZBD1P sy-vline 
WA_FMDPEF_DOC_HEADER_STR-ZUONR sy-vline 
WA_FMDPEF_DOC_HEADER_STR-SGTXT sy-vline 
WA_FMDPEF_DOC_HEADER_STR-BALANCE sy-vline 
WA_FMDPEF_DOC_HEADER_STR-LOCAL_WAERS sy-vline 
WA_FMDPEF_DOC_HEADER_STR-DISTR_ID sy-vline 
WA_FMDPEF_DOC_HEADER_STR-DISTR_TXT sy-vline 
WA_FMDPEF_DOC_HEADER_STR-FLG_TAX_NET sy-vline 
WA_FMDPEF_DOC_HEADER_STR-ZLSPR sy-vline 
WA_FMDPEF_DOC_HEADER_STR-ZLSCH sy-vline 
WA_FMDPEF_DOC_HEADER_STR-UZAWE sy-vline 
WA_FMDPEF_DOC_HEADER_STR-FLG_USE_EF_AMT sy-vline 
WA_FMDPEF_DOC_HEADER_STR-PERC_EF_AMOUNT sy-vline 
WA_FMDPEF_DOC_HEADER_STR-FLG_CALC_DP_AMT sy-vline 
WA_FMDPEF_DOC_HEADER_STR-HBKID sy-vline 
WA_FMDPEF_DOC_HEADER_STR-HKTID sy-vline 
WA_FMDPEF_DOC_HEADER_STR-FMDPEF_LAND1 sy-vline 
WA_FMDPEF_DOC_HEADER_STR-FMDPEF_KALSM sy-vline 
WA_FMDPEF_DOC_HEADER_STR-EMPFB sy-vline      INTO ld_text SEPARATED BY SPACE.

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