ABAP Select data from SAP table HCMFAB_S_PERS_UI0021_21 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HCMFAB_S_PERS_UI0021_21 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 HCMFAB_S_PERS_UI0021_21. 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 HCMFAB_S_PERS_UI0021_21 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_HCMFAB_S_PERS_UI0021_21 TYPE STANDARD TABLE OF HCMFAB_S_PERS_UI0021_21,
      WA_HCMFAB_S_PERS_UI0021_21 TYPE HCMFAB_S_PERS_UI0021_21,
      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: <HCMFAB_S_PERS_UI0021_21> TYPE HCMFAB_S_PERS_UI0021_21.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_HCMFAB_S_PERS_UI0021_21.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM HCMFAB_S_PERS_UI0021_21
  INTO TABLE IT_HCMFAB_S_PERS_UI0021_21.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HCMFAB_S_PERS_UI0021_21
*  INTO TABLE @DATA(IT_HCMFAB_S_PERS_UI0021_212).
*--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_HCMFAB_S_PERS_UI0021_21 INDEX 1 INTO DATA(WA_HCMFAB_S_PERS_UI0021_212).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_HCMFAB_S_PERS_UI0021_21 ASSIGNING <HCMFAB_S_PERS_UI0021_21>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HCMFAB_S_PERS_UI0021_21>-OBJECT_KEY = 1.
<HCMFAB_S_PERS_UI0021_21>-PERNR = 1.
<HCMFAB_S_PERS_UI0021_21>-AEDTM = 1.
<HCMFAB_S_PERS_UI0021_21>-UNAME = 1.
<HCMFAB_S_PERS_UI0021_21>-SPRPS = 1.

ENDLOOP.

LOOP AT IT_HCMFAB_S_PERS_UI0021_21 INTO WA_HCMFAB_S_PERS_UI0021_21.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HCMFAB_S_PERS_UI0021_21-SPRTX, sy-vline,
  WA_HCMFAB_S_PERS_UI0021_21-ITBLD, sy-vline,
  WA_HCMFAB_S_PERS_UI0021_21-ITXEX, sy-vline,
  WA_HCMFAB_S_PERS_UI0021_21-BEGDA, sy-vline,
  WA_HCMFAB_S_PERS_UI0021_21-ENDDA, sy-vline,
  WA_HCMFAB_S_PERS_UI0021_21-FAMSA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HCMFAB_S_PERS_UI0021_21 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_HCMFAB_S_PERS_UI0021_21 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_HCMFAB_S_PERS_UI0021_21 INTO WA_HCMFAB_S_PERS_UI0021_21.


*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 PDATE, internal->external for field FGBDT
CALL FUNCTION 'CONVERSION_EXIT_PDATE_OUTPUT'
  EXPORTING
    input =                      WA_HCMFAB_S_PERS_UI0021_21-FGBDT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HCMFAB_S_PERS_UI0021_21-FGBDT.
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_HCMFAB_S_PERS_UI0021_21_STR, 
OBJECT_KEY TYPE STRING,
PERNR TYPE STRING,
AEDTM TYPE STRING,
UNAME TYPE STRING,
SPRPS TYPE STRING,
SPRTX TYPE STRING,
ITBLD TYPE STRING,
ITXEX TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
FAMSA TYPE STRING,
STEXT TYPE STRING,
OBJPS TYPE STRING,
FANAM TYPE STRING,
FAVOR TYPE STRING,
FASEX TYPE STRING,
TFASEX TYPE STRING,
FGBDT TYPE STRING,
FGBOT TYPE STRING,
FGBLD TYPE STRING,
LNDTX TYPE STRING,
FANAT TYPE STRING,
NATTX TYPE STRING,
FASDT TYPE STRING,
FNAC2 TYPE STRING,
SVNUM TYPE STRING,
SVKNR TYPE STRING,
ADOKD TYPE STRING,
ADOTX TYPE STRING,
ELEVF TYPE STRING,
EKHSZ TYPE STRING,
PITYP TYPE STRING,
PYTEX TYPE STRING,
PERID TYPE STRING,
PERN2 TYPE STRING,
STAT1 TYPE STRING,
STAT2 TYPE STRING,
STAT3 TYPE STRING,
STAT4 TYPE STRING,
STAT5 TYPE STRING,
STAT6 TYPE STRING,
STAT7 TYPE STRING,
KDSTX TYPE STRING,
KDBTX TYPE STRING,
KDUTX TYPE STRING,
KDGTX TYPE STRING,
KNDTX TYPE STRING,
KDVTX TYPE STRING,
TBTXT TYPE STRING,
ANYNA TYPE STRING,
ANYVO TYPE STRING,
ESMNY TYPE STRING,
SZOVG TYPE STRING,
DATM1 TYPE STRING,
ESMN1 TYPE STRING,
SZOV1 TYPE STRING,
DATM2 TYPE STRING,
DATM3 TYPE STRING,
NY3MH TYPE STRING,
ALLPT TYPE STRING,
ALPTX TYPE STRING,
DATM4 TYPE STRING,
CSPMH TYPE STRING,
GYSOR TYPE STRING,
IGENC TYPE STRING,
KORCS TYPE STRING,
WAERS TYPE STRING,
AZONS TYPE STRING,
KMOD1 TYPE STRING,
KMOD2 TYPE STRING,
IKREK TYPE STRING,
SNEVI TYPE STRING,
FORMATTED_NAME TYPE STRING,
CSKJC TYPE STRING,
CJCTX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HCMFAB_S_PERS_UI0021_21_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_HCMFAB_S_PERS_UI0021_21_STR-OBJECT_KEY sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-PERNR sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-AEDTM sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-UNAME sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-SPRPS sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-SPRTX sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-ITBLD sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-ITXEX sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-BEGDA sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-ENDDA sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-FAMSA sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-STEXT sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-OBJPS sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-FANAM sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-FAVOR sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-FASEX sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-TFASEX sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-FGBDT sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-FGBOT sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-FGBLD sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-LNDTX sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-FANAT sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-NATTX sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-FASDT sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-FNAC2 sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-SVNUM sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-SVKNR sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-ADOKD sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-ADOTX sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-ELEVF sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-EKHSZ sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-PITYP sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-PYTEX sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-PERID sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-PERN2 sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-STAT1 sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-STAT2 sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-STAT3 sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-STAT4 sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-STAT5 sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-STAT6 sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-STAT7 sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-KDSTX sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-KDBTX sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-KDUTX sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-KDGTX sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-KNDTX sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-KDVTX sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-TBTXT sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-ANYNA sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-ANYVO sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-ESMNY sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-SZOVG sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-DATM1 sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-ESMN1 sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-SZOV1 sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-DATM2 sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-DATM3 sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-NY3MH sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-ALLPT sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-ALPTX sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-DATM4 sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-CSPMH sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-GYSOR sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-IGENC sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-KORCS sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-WAERS sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-AZONS sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-KMOD1 sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-KMOD2 sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-IKREK sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-SNEVI sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-FORMATTED_NAME sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-CSKJC sy-vline 
WA_HCMFAB_S_PERS_UI0021_21_STR-CJCTX sy-vline      INTO ld_text SEPARATED BY SPACE.

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