ABAP Select data from SAP table HUM_HEADER_ATTRIBUTES_S into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HUM_HEADER_ATTRIBUTES_S
*  INTO TABLE @DATA(IT_HUM_HEADER_ATTRIBUTES_S2).
*--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_HUM_HEADER_ATTRIBUTES_S INDEX 1 INTO DATA(WA_HUM_HEADER_ATTRIBUTES_S2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HUM_HEADER_ATTRIBUTES_S>-BRGEW = 1.
<HUM_HEADER_ATTRIBUTES_S>-NTGEW = 1.
<HUM_HEADER_ATTRIBUTES_S>-MAGEW = 1.
<HUM_HEADER_ATTRIBUTES_S>-GEWTO = 1.
<HUM_HEADER_ATTRIBUTES_S>-GEWEI_MAX = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HUM_HEADER_ATTRIBUTES_S-TARAG, sy-vline,
  WA_HUM_HEADER_ATTRIBUTES_S-GEWEI, sy-vline,
  WA_HUM_HEADER_ATTRIBUTES_S-BTVOL, sy-vline,
  WA_HUM_HEADER_ATTRIBUTES_S-NTVOL, sy-vline,
  WA_HUM_HEADER_ATTRIBUTES_S-MAVOL, sy-vline,
  WA_HUM_HEADER_ATTRIBUTES_S-VOLTO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HUM_HEADER_ATTRIBUTES_S 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_HUM_HEADER_ATTRIBUTES_S 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_HUM_HEADER_ATTRIBUTES_S INTO WA_HUM_HEADER_ATTRIBUTES_S.


*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 CUNIT, internal->external for field GEWEI_MAX
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_HUM_HEADER_ATTRIBUTES_S-GEWEI_MAX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HUM_HEADER_ATTRIBUTES_S-GEWEI_MAX.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field GEWEI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_HUM_HEADER_ATTRIBUTES_S-GEWEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HUM_HEADER_ATTRIBUTES_S-GEWEI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VOLEH_MAX
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_HUM_HEADER_ATTRIBUTES_S-VOLEH_MAX
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HUM_HEADER_ATTRIBUTES_S-VOLEH_MAX.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VOLEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_HUM_HEADER_ATTRIBUTES_S-VOLEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HUM_HEADER_ATTRIBUTES_S-VOLEH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEABM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_HUM_HEADER_ATTRIBUTES_S-MEABM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HUM_HEADER_ATTRIBUTES_S-MEABM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EXIDV2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_HUM_HEADER_ATTRIBUTES_S-EXIDV2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HUM_HEADER_ATTRIBUTES_S-EXIDV2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit VHUPI, internal->external for field PACKVORSCHR
CALL FUNCTION 'CONVERSION_EXIT_VHUPI_OUTPUT'
  EXPORTING
    input =                      WA_HUM_HEADER_ATTRIBUTES_S-PACKVORSCHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HUM_HEADER_ATTRIBUTES_S-PACKVORSCHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field LADEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_HUM_HEADER_ATTRIBUTES_S-LADEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HUM_HEADER_ATTRIBUTES_S-LADEH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field FAREH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_HUM_HEADER_ATTRIBUTES_S-FAREH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HUM_HEADER_ATTRIBUTES_S-FAREH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field EHENT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_HUM_HEADER_ATTRIBUTES_S-EHENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HUM_HEADER_ATTRIBUTES_S-EHENT.
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_HUM_HEADER_ATTRIBUTES_S_STR, 
BRGEW TYPE STRING,
NTGEW TYPE STRING,
MAGEW TYPE STRING,
GEWTO TYPE STRING,
GEWEI_MAX TYPE STRING,
TARAG TYPE STRING,
GEWEI TYPE STRING,
BTVOL TYPE STRING,
NTVOL TYPE STRING,
MAVOL TYPE STRING,
VOLTO TYPE STRING,
VOLEH_MAX TYPE STRING,
TAVOL TYPE STRING,
VOLEH TYPE STRING,
GEWFX TYPE STRING,
KZGVH TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,
AEZET TYPE STRING,
SORTL TYPE STRING,
VEGR1 TYPE STRING,
VEGR2 TYPE STRING,
VEGR3 TYPE STRING,
VEGR4 TYPE STRING,
VEGR5 TYPE STRING,
LAENG TYPE STRING,
BREIT TYPE STRING,
HOEHE TYPE STRING,
MEABM TYPE STRING,
ERLKZ TYPE STRING,
INHALT TYPE STRING,
EXIDV2 TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
PACKVORSCHR TYPE STRING,
PACKVORSCHR_ST TYPE STRING,
LABELTYP TYPE STRING,
ZUL_AUFL TYPE STRING,
LADLG TYPE STRING,
LADEH TYPE STRING,
FARZT TYPE STRING,
FAREH TYPE STRING,
ENTFE TYPE STRING,
EHENT TYPE STRING,
LANDT TYPE STRING,
LANDF TYPE STRING,
NAMEF TYPE STRING,
NAMBE TYPE STRING,
VHILM_KU TYPE STRING,
HUDHR_INCL_EEW_PS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HUM_HEADER_ATTRIBUTES_S_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_HUM_HEADER_ATTRIBUTES_S_STR-BRGEW sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-NTGEW sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-MAGEW sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-GEWTO sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-GEWEI_MAX sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-TARAG sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-GEWEI sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-BTVOL sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-NTVOL sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-MAVOL sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-VOLTO sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-VOLEH_MAX sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-TAVOL sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-VOLEH sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-GEWFX sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-KZGVH sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-AENAM sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-AEDAT sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-AEZET sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-SORTL sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-VEGR1 sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-VEGR2 sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-VEGR3 sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-VEGR4 sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-VEGR5 sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-LAENG sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-BREIT sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-HOEHE sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-MEABM sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-ERLKZ sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-INHALT sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-EXIDV2 sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-WERKS sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-LGORT sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-PACKVORSCHR sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-PACKVORSCHR_ST sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-LABELTYP sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-ZUL_AUFL sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-LADLG sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-LADEH sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-FARZT sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-FAREH sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-ENTFE sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-EHENT sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-LANDT sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-LANDF sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-NAMEF sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-NAMBE sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-VHILM_KU sy-vline 
WA_HUM_HEADER_ATTRIBUTES_S_STR-HUDHR_INCL_EEW_PS sy-vline      INTO ld_text SEPARATED BY SPACE.

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