ABAP Select data from SAP table /SCWM/S_ASPN_HU_TO into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SCWM/S_ASPN_HU_TO 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 /SCWM/S_ASPN_HU_TO. 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 /SCWM/S_ASPN_HU_TO 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_/SCWM/S_ASPN_HU_TO TYPE STANDARD TABLE OF /SCWM/S_ASPN_HU_TO,
      WA_/SCWM/S_ASPN_HU_TO TYPE /SCWM/S_ASPN_HU_TO,
      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: </SCWM/S_ASPN_HU_TO> TYPE /SCWM/S_ASPN_HU_TO.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SCWM/S_ASPN_HU_TO
  INTO TABLE IT_/SCWM/S_ASPN_HU_TO.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCWM/S_ASPN_HU_TO
*  INTO TABLE @DATA(IT_/SCWM/S_ASPN_HU_TO2).
*--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_/SCWM/S_ASPN_HU_TO INDEX 1 INTO DATA(WA_/SCWM/S_ASPN_HU_TO2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SCWM/S_ASPN_HU_TO ASSIGNING </SCWM/S_ASPN_HU_TO>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCWM/S_ASPN_HU_TO>-LGNUM = 1.
</SCWM/S_ASPN_HU_TO>-TANUM = 1.
</SCWM/S_ASPN_HU_TO>-TAPOS = 1.
</SCWM/S_ASPN_HU_TO>-CHANGEABLE_ICON = 1.
</SCWM/S_ASPN_HU_TO>-STATUS = 1.

ENDLOOP.

LOOP AT IT_/SCWM/S_ASPN_HU_TO INTO WA_/SCWM/S_ASPN_HU_TO.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCWM/S_ASPN_HU_TO-STATUS_TXT, sy-vline,
  WA_/SCWM/S_ASPN_HU_TO-TRART, sy-vline,
  WA_/SCWM/S_ASPN_HU_TO-PROCTY, sy-vline,
  WA_/SCWM/S_ASPN_HU_TO-KZSUB, sy-vline,
  WA_/SCWM/S_ASPN_HU_TO-SUBSTFL, sy-vline,
  WA_/SCWM/S_ASPN_HU_TO-AAREA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCWM/S_ASPN_HU_TO 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_/SCWM/S_ASPN_HU_TO 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_/SCWM/S_ASPN_HU_TO INTO WA_/SCWM/S_ASPN_HU_TO.


*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 ALPH0, internal->external for field TANUM
CALL FUNCTION 'CONVERSION_EXIT_ALPH0_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_ASPN_HU_TO-TANUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_ASPN_HU_TO-TANUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPH0, internal->external for field TAPOS
CALL FUNCTION 'CONVERSION_EXIT_ALPH0_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_ASPN_HU_TO-TAPOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_ASPN_HU_TO-TAPOS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit HUID, internal->external for field NLENR
CALL FUNCTION 'CONVERSION_EXIT_HUID_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_ASPN_HU_TO-NLENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_ASPN_HU_TO-NLENR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit HUID, internal->external for field VLENR
CALL FUNCTION 'CONVERSION_EXIT_HUID_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_ASPN_HU_TO-VLENR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_ASPN_HU_TO-VLENR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit TSPWM, internal->external for field DTSP
CALL FUNCTION 'CONVERSION_EXIT_TSPWM_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_ASPN_HU_TO-DTSP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_ASPN_HU_TO-DTSP.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit TSPWM, internal->external for field STSP
CALL FUNCTION 'CONVERSION_EXIT_TSPWM_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_ASPN_HU_TO-STSP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_ASPN_HU_TO-STSP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPH0, internal->external for field WHO
CALL FUNCTION 'CONVERSION_EXIT_ALPH0_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_ASPN_HU_TO-WHO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_ASPN_HU_TO-WHO.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field ITEMNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_ASPN_HU_TO-ITEMNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_ASPN_HU_TO-ITEMNO.
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_/SCWM/S_ASPN_HU_TO_STR, 
LGNUM TYPE STRING,
TANUM TYPE STRING,
TAPOS TYPE STRING,
CHANGEABLE_ICON TYPE STRING,
STATUS TYPE STRING,
STATUS_TXT TYPE STRING,
TRART TYPE STRING,
PROCTY TYPE STRING,
KZSUB TYPE STRING,
SUBSTFL TYPE STRING,
AAREA TYPE STRING,
NLTYP TYPE STRING,
NLBER TYPE STRING,
NLPLA TYPE STRING,
DLOGPOS TYPE STRING,
VLTYP TYPE STRING,
VLBER TYPE STRING,
VLPLA TYPE STRING,
SLOGPOS TYPE STRING,
NLENR TYPE STRING,
VLENR TYPE STRING,
DRSRC TYPE STRING,
SRSRC TYPE STRING,
DTU_NUM TYPE STRING,
DTU_NUM_EXT TYPE STRING,
DTSP TYPE STRING,
DTSP_TEXT TYPE STRING,
STU_NUM TYPE STRING,
STU_NUM_EXT TYPE STRING,
STSP TYPE STRING,
STSP_TEXT TYPE STRING,
EXCCODE TYPE STRING,
BUSCON TYPE STRING,
EXEC_STEP TYPE STRING,
DESCR TYPE STRING,
CONFIRMED_BY TYPE STRING,
CONF_DATE TYPE STRING,
CONF_TIME TYPE STRING,
DSTGRP TYPE STRING,
ACT_TYPE TYPE STRING,
PRCES TYPE STRING,
PROCS TYPE STRING,
WCR TYPE STRING,
WHOSEQ TYPE STRING,
WHO TYPE STRING,
ARCHIVEFL TYPE STRING,
RDOCCAT TYPE STRING,
RDOCID TYPE STRING,
RITMID TYPE STRING,
RDOCCAT_TEXT TYPE STRING,
DOCNO TYPE STRING,
ITEMNO TYPE STRING,
FLG_PAS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCWM/S_ASPN_HU_TO_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_/SCWM/S_ASPN_HU_TO_STR-LGNUM sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-TANUM sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-TAPOS sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-CHANGEABLE_ICON sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-STATUS sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-STATUS_TXT sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-TRART sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-PROCTY sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-KZSUB sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-SUBSTFL sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-AAREA sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-NLTYP sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-NLBER sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-NLPLA sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-DLOGPOS sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-VLTYP sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-VLBER sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-VLPLA sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-SLOGPOS sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-NLENR sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-VLENR sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-DRSRC sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-SRSRC sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-DTU_NUM sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-DTU_NUM_EXT sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-DTSP sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-DTSP_TEXT sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-STU_NUM sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-STU_NUM_EXT sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-STSP sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-STSP_TEXT sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-EXCCODE sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-BUSCON sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-EXEC_STEP sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-DESCR sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-CONFIRMED_BY sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-CONF_DATE sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-CONF_TIME sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-DSTGRP sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-ACT_TYPE sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-PRCES sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-PROCS sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-WCR sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-WHOSEQ sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-WHO sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-ARCHIVEFL sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-RDOCCAT sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-RDOCID sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-RITMID sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-RDOCCAT_TEXT sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-DOCNO sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-ITEMNO sy-vline 
WA_/SCWM/S_ASPN_HU_TO_STR-FLG_PAS sy-vline      INTO ld_text SEPARATED BY SPACE.

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