ABAP Select data from SAP table HCMFAB_S_PERS_UI0021_UN 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_UN 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_UN. 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_UN 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_UN TYPE STANDARD TABLE OF HCMFAB_S_PERS_UI0021_UN,
      WA_HCMFAB_S_PERS_UI0021_UN TYPE HCMFAB_S_PERS_UI0021_UN,
      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_UN> TYPE HCMFAB_S_PERS_UI0021_UN.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_HCMFAB_S_PERS_UI0021_UN.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM HCMFAB_S_PERS_UI0021_UN
  INTO TABLE IT_HCMFAB_S_PERS_UI0021_UN.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HCMFAB_S_PERS_UI0021_UN
*  INTO TABLE @DATA(IT_HCMFAB_S_PERS_UI0021_UN2).
*--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_UN INDEX 1 INTO DATA(WA_HCMFAB_S_PERS_UI0021_UN2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_HCMFAB_S_PERS_UI0021_UN ASSIGNING <HCMFAB_S_PERS_UI0021_UN>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HCMFAB_S_PERS_UI0021_UN>-OBJECT_KEY = 1.
<HCMFAB_S_PERS_UI0021_UN>-PERNR = 1.
<HCMFAB_S_PERS_UI0021_UN>-AEDTM = 1.
<HCMFAB_S_PERS_UI0021_UN>-UNAME = 1.
<HCMFAB_S_PERS_UI0021_UN>-SPRPS = 1.

ENDLOOP.

LOOP AT IT_HCMFAB_S_PERS_UI0021_UN INTO WA_HCMFAB_S_PERS_UI0021_UN.
*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_UN-SPRTX, sy-vline,
  WA_HCMFAB_S_PERS_UI0021_UN-ITBLD, sy-vline,
  WA_HCMFAB_S_PERS_UI0021_UN-ITXEX, sy-vline,
  WA_HCMFAB_S_PERS_UI0021_UN-BEGDA, sy-vline,
  WA_HCMFAB_S_PERS_UI0021_UN-ENDDA, sy-vline,
  WA_HCMFAB_S_PERS_UI0021_UN-ORDEX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HCMFAB_S_PERS_UI0021_UN 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_UN 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_UN INTO WA_HCMFAB_S_PERS_UI0021_UN.


*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 AHVNR, internal->external for field AHVNR
CALL FUNCTION 'CONVERSION_EXIT_AHVNR_OUTPUT'
  EXPORTING
    input =                      WA_HCMFAB_S_PERS_UI0021_UN-AHVNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HCMFAB_S_PERS_UI0021_UN-AHVNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PDATE, internal->external for field FGBDT
CALL FUNCTION 'CONVERSION_EXIT_PDATE_OUTPUT'
  EXPORTING
    input =                      WA_HCMFAB_S_PERS_UI0021_UN-FGBDT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HCMFAB_S_PERS_UI0021_UN-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_UN_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,
ORDEX TYPE STRING,
FAMSA TYPE STRING,
FAMSA_TEXT TYPE STRING,
OBJPS TYPE STRING,
FANAM TYPE STRING,
FGBNA TYPE STRING,
FAVOR TYPE STRING,
ERBNR TYPE STRING,
FASEX TYPE STRING,
FASEXTXT TYPE STRING,
AHVNR TYPE STRING,
FGBDT TYPE STRING,
FANAT TYPE STRING,
FGBOT TYPE STRING,
FGBLD TYPE STRING,
EGAGA TYPE STRING,
NATTX TYPE STRING,
NCCHL TYPE STRING,
TEXT01 TYPE STRING,
TEXT02 TYPE STRING,
GOVAST TYPE STRING,
LNDTX TYPE STRING,
SPEMP TYPE STRING,
TRANS_IND TYPE STRING,
TRANS_DATE TYPE STRING,
ARRIVAL_DATE TYPE STRING,
MIDNM TYPE STRING,
FAMST TYPE STRING,
FAMDT TYPE STRING,
KDGBR TYPE STRING,
IRDOA TYPE STRING,
KDBSL TYPE STRING,
KDUTB TYPE STRING,
LGART TYPE STRING,
OPKEN TYPE STRING,
WAERS TYPE STRING,
BETR3 TYPE STRING,
DTHDT TYPE STRING,
SPWAE TYPE STRING,
SPEAR TYPE STRING,
EDUAT TYPE STRING,
SPODS TYPE STRING,
FIDEP TYPE STRING,
SPRNR TYPE STRING,
SERTY TYPE STRING,
SERUN TYPE STRING,
SERTX TYPE STRING,
FSAMT TYPE STRING,
FSWAER TYPE STRING,
FTEXT TYPE STRING,
SPODSTEXT TYPE STRING,
SERUNTEXT TYPE STRING,
FANAT_TEXT TYPE STRING,
KDBTX TYPE STRING,
KDGTX TYPE STRING,
KDUTX TYPE STRING,
SERTY_TEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HCMFAB_S_PERS_UI0021_UN_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_UN_STR-OBJECT_KEY sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-PERNR sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-AEDTM sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-UNAME sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-SPRPS sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-SPRTX sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-ITBLD sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-ITXEX sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-BEGDA sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-ENDDA sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-ORDEX sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-FAMSA sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-FAMSA_TEXT sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-OBJPS sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-FANAM sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-FGBNA sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-FAVOR sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-ERBNR sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-FASEX sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-FASEXTXT sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-AHVNR sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-FGBDT sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-FANAT sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-FGBOT sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-FGBLD sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-EGAGA sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-NATTX sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-NCCHL sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-TEXT01 sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-TEXT02 sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-GOVAST sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-LNDTX sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-SPEMP sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-TRANS_IND sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-TRANS_DATE sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-ARRIVAL_DATE sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-MIDNM sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-FAMST sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-FAMDT sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-KDGBR sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-IRDOA sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-KDBSL sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-KDUTB sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-LGART sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-OPKEN sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-WAERS sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-BETR3 sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-DTHDT sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-SPWAE sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-SPEAR sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-EDUAT sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-SPODS sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-FIDEP sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-SPRNR sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-SERTY sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-SERUN sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-SERTX sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-FSAMT sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-FSWAER sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-FTEXT sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-SPODSTEXT sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-SERUNTEXT sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-FANAT_TEXT sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-KDBTX sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-KDGTX sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-KDUTX sy-vline 
WA_HCMFAB_S_PERS_UI0021_UN_STR-SERTY_TEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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