ABAP Select data from SAP table HUM_AR_HULIST_HEADER into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HUM_AR_HULIST_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 HUM_AR_HULIST_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 HUM_AR_HULIST_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_HUM_AR_HULIST_HEADER TYPE STANDARD TABLE OF HUM_AR_HULIST_HEADER,
      WA_HUM_AR_HULIST_HEADER TYPE HUM_AR_HULIST_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: <HUM_AR_HULIST_HEADER> TYPE HUM_AR_HULIST_HEADER.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HUM_AR_HULIST_HEADER
*  INTO TABLE @DATA(IT_HUM_AR_HULIST_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_HUM_AR_HULIST_HEADER INDEX 1 INTO DATA(WA_HUM_AR_HULIST_HEADER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HUM_AR_HULIST_HEADER>-EXPAND = 1.
<HUM_AR_HULIST_HEADER>-HUNUM = 1.
<HUM_AR_HULIST_HEADER>-HU_LEVEL = 1.
<HUM_AR_HULIST_HEADER>-EXIDV = 1.
<HUM_AR_HULIST_HEADER>-VENUM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HUM_AR_HULIST_HEADER-VHILM, sy-vline,
  WA_HUM_AR_HULIST_HEADER-VHART, sy-vline,
  WA_HUM_AR_HULIST_HEADER-ERNAM, sy-vline,
  WA_HUM_AR_HULIST_HEADER-ERDAT, sy-vline,
  WA_HUM_AR_HULIST_HEADER-AENAM, sy-vline,
  WA_HUM_AR_HULIST_HEADER-AEDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HUM_AR_HULIST_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_HUM_AR_HULIST_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_HUM_AR_HULIST_HEADER INTO WA_HUM_AR_HULIST_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 EXIDV
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_HUM_AR_HULIST_HEADER-EXIDV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HUM_AR_HULIST_HEADER-EXIDV.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit MATN1, internal->external for field VHILM
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_HUM_AR_HULIST_HEADER-VHILM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HUM_AR_HULIST_HEADER-VHILM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit VHUPI, internal->external for field PACKVORSCHR
CALL FUNCTION 'CONVERSION_EXIT_VHUPI_OUTPUT'
  EXPORTING
    input =                      WA_HUM_AR_HULIST_HEADER-PACKVORSCHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HUM_AR_HULIST_HEADER-PACKVORSCHR.
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_AR_HULIST_HEADER_STR, 
EXPAND TYPE STRING,
HUNUM TYPE STRING,
HU_LEVEL TYPE STRING,
EXIDV TYPE STRING,
VENUM TYPE STRING,
VHILM TYPE STRING,
VHART TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,
VPOBJ TYPE STRING,
VPOBJKEY TYPE STRING,
PACKVORSCHR TYPE STRING,
PACKVORSCHR_ST TYPE STRING,
COLOR TYPE STRING,
DUMMY1 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HUM_AR_HULIST_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_HUM_AR_HULIST_HEADER_STR-EXPAND sy-vline 
WA_HUM_AR_HULIST_HEADER_STR-HUNUM sy-vline 
WA_HUM_AR_HULIST_HEADER_STR-HU_LEVEL sy-vline 
WA_HUM_AR_HULIST_HEADER_STR-EXIDV sy-vline 
WA_HUM_AR_HULIST_HEADER_STR-VENUM sy-vline 
WA_HUM_AR_HULIST_HEADER_STR-VHILM sy-vline 
WA_HUM_AR_HULIST_HEADER_STR-VHART sy-vline 
WA_HUM_AR_HULIST_HEADER_STR-ERNAM sy-vline 
WA_HUM_AR_HULIST_HEADER_STR-ERDAT sy-vline 
WA_HUM_AR_HULIST_HEADER_STR-AENAM sy-vline 
WA_HUM_AR_HULIST_HEADER_STR-AEDAT sy-vline 
WA_HUM_AR_HULIST_HEADER_STR-VPOBJ sy-vline 
WA_HUM_AR_HULIST_HEADER_STR-VPOBJKEY sy-vline 
WA_HUM_AR_HULIST_HEADER_STR-PACKVORSCHR sy-vline 
WA_HUM_AR_HULIST_HEADER_STR-PACKVORSCHR_ST sy-vline 
WA_HUM_AR_HULIST_HEADER_STR-COLOR sy-vline 
WA_HUM_AR_HULIST_HEADER_STR-DUMMY1 sy-vline      INTO ld_text SEPARATED BY SPACE.

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