ABAP Select data from SAP table HCMFAB_S_PERS_UI0021_12 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_12 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_12. 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_12 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_12 TYPE STANDARD TABLE OF HCMFAB_S_PERS_UI0021_12,
      WA_HCMFAB_S_PERS_UI0021_12 TYPE HCMFAB_S_PERS_UI0021_12,
      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_12> TYPE HCMFAB_S_PERS_UI0021_12.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_HCMFAB_S_PERS_UI0021_12.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM HCMFAB_S_PERS_UI0021_12
  INTO TABLE IT_HCMFAB_S_PERS_UI0021_12.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HCMFAB_S_PERS_UI0021_12
*  INTO TABLE @DATA(IT_HCMFAB_S_PERS_UI0021_122).
*--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_12 INDEX 1 INTO DATA(WA_HCMFAB_S_PERS_UI0021_122).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_HCMFAB_S_PERS_UI0021_12 ASSIGNING <HCMFAB_S_PERS_UI0021_12>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HCMFAB_S_PERS_UI0021_12>-OBJECT_KEY = 1.
<HCMFAB_S_PERS_UI0021_12>-PERNR = 1.
<HCMFAB_S_PERS_UI0021_12>-AEDTM = 1.
<HCMFAB_S_PERS_UI0021_12>-UNAME = 1.
<HCMFAB_S_PERS_UI0021_12>-SPRPS = 1.

ENDLOOP.

LOOP AT IT_HCMFAB_S_PERS_UI0021_12 INTO WA_HCMFAB_S_PERS_UI0021_12.
*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_12-SPRTX, sy-vline,
  WA_HCMFAB_S_PERS_UI0021_12-ITBLD, sy-vline,
  WA_HCMFAB_S_PERS_UI0021_12-ITXEX, sy-vline,
  WA_HCMFAB_S_PERS_UI0021_12-BEGDA, sy-vline,
  WA_HCMFAB_S_PERS_UI0021_12-ENDDA, sy-vline,
  WA_HCMFAB_S_PERS_UI0021_12-FAMSA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HCMFAB_S_PERS_UI0021_12 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_12 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_12 INTO WA_HCMFAB_S_PERS_UI0021_12.


*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_12-FGBDT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HCMFAB_S_PERS_UI0021_12-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_12_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,
TXT_FAMSA TYPE STRING,
OBJTX TYPE STRING,
OBJPS TYPE STRING,
OBJPS1 TYPE STRING,
OBJPS2 TYPE STRING,
FANAM TYPE STRING,
FGBNA TYPE STRING,
FAVOR TYPE STRING,
FINIT TYPE STRING,
FNMZU TYPE STRING,
KNZNM TYPE STRING,
KNZNMTEXT TYPE STRING,
FVRSW TYPE STRING,
FVRS2 TYPE STRING,
FGBDT TYPE STRING,
FGBOT TYPE STRING,
FGBLD TYPE STRING,
FGBLD_TEXT TYPE STRING,
FANAT_TXT TYPE STRING,
FANAT TYPE STRING,
FANA2_TXT TYPE STRING,
FANA2 TYPE STRING,
FANA3_TXT TYPE STRING,
FANA3 TYPE STRING,
KDSVH TYPE STRING,
FASEX_TXT TYPE STRING,
FASEX TYPE STRING,
FORMATTED_NAME TYPE STRING,
DATOL TYPE STRING,
BVXMV TYPE STRING,
BVEPC TYPE STRING,
SIMBL_PERCT TYPE STRING,
PERCENT_TXT TYPE STRING,
TELNR TYPE STRING,
BVXTL TYPE STRING,
BVECH_TXT TYPE STRING,
BVECH TYPE STRING,
BVXKK TYPE STRING,
BVEKI_TXT TYPE STRING,
BVEKI TYPE STRING,
BVFLD TYPE STRING,
ERBNR TYPE STRING,
EGAGA TYPE STRING,
ANTXT TYPE STRING,
BVGAR TYPE STRING,
BVCOA TYPE STRING,
GESC1 TYPE STRING,
GESC2 TYPE STRING,
DIPI1 TYPE STRING,
DIPI2 TYPE STRING,
DIPI3 TYPE STRING,
DITOT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HCMFAB_S_PERS_UI0021_12_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_12_STR-OBJECT_KEY sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-PERNR sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-AEDTM sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-UNAME sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-SPRPS sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-SPRTX sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-ITBLD sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-ITXEX sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-BEGDA sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-ENDDA sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-FAMSA sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-TXT_FAMSA sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-OBJTX sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-OBJPS sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-OBJPS1 sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-OBJPS2 sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-FANAM sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-FGBNA sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-FAVOR sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-FINIT sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-FNMZU sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-KNZNM sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-KNZNMTEXT sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-FVRSW sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-FVRS2 sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-FGBDT sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-FGBOT sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-FGBLD sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-FGBLD_TEXT sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-FANAT_TXT sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-FANAT sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-FANA2_TXT sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-FANA2 sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-FANA3_TXT sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-FANA3 sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-KDSVH sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-FASEX_TXT sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-FASEX sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-FORMATTED_NAME sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-DATOL sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-BVXMV sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-BVEPC sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-SIMBL_PERCT sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-PERCENT_TXT sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-TELNR sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-BVXTL sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-BVECH_TXT sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-BVECH sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-BVXKK sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-BVEKI_TXT sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-BVEKI sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-BVFLD sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-ERBNR sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-EGAGA sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-ANTXT sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-BVGAR sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-BVCOA sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-GESC1 sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-GESC2 sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-DIPI1 sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-DIPI2 sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-DIPI3 sy-vline 
WA_HCMFAB_S_PERS_UI0021_12_STR-DITOT sy-vline      INTO ld_text SEPARATED BY SPACE.

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