ABAP Select data from SAP table /SCWM/S_BUF_HU_TO_CONT 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_BUF_HU_TO_CONT 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_BUF_HU_TO_CONT. 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_BUF_HU_TO_CONT 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_BUF_HU_TO_CONT TYPE STANDARD TABLE OF /SCWM/S_BUF_HU_TO_CONT,
      WA_/SCWM/S_BUF_HU_TO_CONT TYPE /SCWM/S_BUF_HU_TO_CONT,
      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_BUF_HU_TO_CONT> TYPE /SCWM/S_BUF_HU_TO_CONT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCWM/S_BUF_HU_TO_CONT
*  INTO TABLE @DATA(IT_/SCWM/S_BUF_HU_TO_CONT2).
*--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_BUF_HU_TO_CONT INDEX 1 INTO DATA(WA_/SCWM/S_BUF_HU_TO_CONT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCWM/S_BUF_HU_TO_CONT>-GUID_STOCK = 1.
</SCWM/S_BUF_HU_TO_CONT>-GUID_HU = 1.
</SCWM/S_BUF_HU_TO_CONT>-GUID_TO = 1.
</SCWM/S_BUF_HU_TO_CONT>-LGNUM = 1.
</SCWM/S_BUF_HU_TO_CONT>-TANUM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCWM/S_BUF_HU_TO_CONT-TAPOS, sy-vline,
  WA_/SCWM/S_BUF_HU_TO_CONT-TRART, sy-vline,
  WA_/SCWM/S_BUF_HU_TO_CONT-CHANGEABLE_ICON, sy-vline,
  WA_/SCWM/S_BUF_HU_TO_CONT-HUIDENT, sy-vline,
  WA_/SCWM/S_BUF_HU_TO_CONT-NLEVEL, sy-vline,
  WA_/SCWM/S_BUF_HU_TO_CONT-GUID_PARENT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCWM/S_BUF_HU_TO_CONT 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_BUF_HU_TO_CONT 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_BUF_HU_TO_CONT INTO WA_/SCWM/S_BUF_HU_TO_CONT.


*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_BUF_HU_TO_CONT-TANUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_BUF_HU_TO_CONT-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_BUF_HU_TO_CONT-TAPOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_BUF_HU_TO_CONT-TAPOS.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit MDLPD, internal->external for field MATID
CALL FUNCTION 'CONVERSION_EXIT_MDLPD_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_BUF_HU_TO_CONT-MATID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_BUF_HU_TO_CONT-MATID.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit MDLPD, internal->external for field PMAT_GUID
CALL FUNCTION 'CONVERSION_EXIT_MDLPD_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_BUF_HU_TO_CONT-PMAT_GUID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_BUF_HU_TO_CONT-PMAT_GUID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field PMAT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_BUF_HU_TO_CONT-PMAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_BUF_HU_TO_CONT-PMAT.
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_BUF_HU_TO_CONT_STR, 
GUID_STOCK TYPE STRING,
GUID_HU TYPE STRING,
GUID_TO TYPE STRING,
LGNUM TYPE STRING,
TANUM TYPE STRING,
TAPOS TYPE STRING,
TRART TYPE STRING,
CHANGEABLE_ICON TYPE STRING,
HUIDENT TYPE STRING,
NLEVEL TYPE STRING,
GUID_PARENT TYPE STRING,
HUIDENT_PARENT TYPE STRING,
QDOCCAT TYPE STRING,
QDOCID TYPE STRING,
QITMID TYPE STRING,
INSPTYP TYPE STRING,
INSPID TYPE STRING,
IDPLATE TYPE STRING,
ENTITLED TYPE STRING,
KIT_COMPONENT TYPE STRING,
SER_STOCK TYPE STRING,
MATID TYPE STRING,
MATNR TYPE STRING,
MAKTX TYPE STRING,
BATCHID TYPE STRING,
CHARG TYPE STRING,
QUAN_BME TYPE STRING,
QUAN_BME_DB TYPE STRING,
ACTQUAN_BME TYPE STRING,
ACTQUAN_BME_PR TYPE STRING,
DIFQUAN_BME TYPE STRING,
DIFQUAN_BME_PR TYPE STRING,
MEINS TYPE STRING,
CWQUAN TYPE STRING,
CWQUAN_DB TYPE STRING,
CWEXACT TYPE STRING,
ACT_CWQUAN TYPE STRING,
ACT_CWQUAN_PR TYPE STRING,
ACT_CWEXACT TYPE STRING,
DIF_CWQUAN TYPE STRING,
DIF_CWQUAN_PR TYPE STRING,
DIF_CWEXACT TYPE STRING,
CWUNIT TYPE STRING,
DIF_ALL TYPE STRING,
EXCCODE TYPE STRING,
DESCR TYPE STRING,
DIFTY TYPE STRING,
PMAT_GUID TYPE STRING,
PMAT TYPE STRING,
PMTYP TYPE STRING,
PMTYP_TEXT TYPE STRING,
IDX_STOCK TYPE STRING,
CHNGIND TYPE STRING,
ENQUEUE_FLAG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCWM/S_BUF_HU_TO_CONT_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_BUF_HU_TO_CONT_STR-GUID_STOCK sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-GUID_HU sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-GUID_TO sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-LGNUM sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-TANUM sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-TAPOS sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-TRART sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-CHANGEABLE_ICON sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-HUIDENT sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-NLEVEL sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-GUID_PARENT sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-HUIDENT_PARENT sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-QDOCCAT sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-QDOCID sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-QITMID sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-INSPTYP sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-INSPID sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-IDPLATE sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-ENTITLED sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-KIT_COMPONENT sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-SER_STOCK sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-MATID sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-MATNR sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-MAKTX sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-BATCHID sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-CHARG sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-QUAN_BME sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-QUAN_BME_DB sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-ACTQUAN_BME sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-ACTQUAN_BME_PR sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-DIFQUAN_BME sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-DIFQUAN_BME_PR sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-MEINS sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-CWQUAN sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-CWQUAN_DB sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-CWEXACT sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-ACT_CWQUAN sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-ACT_CWQUAN_PR sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-ACT_CWEXACT sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-DIF_CWQUAN sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-DIF_CWQUAN_PR sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-DIF_CWEXACT sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-CWUNIT sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-DIF_ALL sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-EXCCODE sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-DESCR sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-DIFTY sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-PMAT_GUID sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-PMAT sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-PMTYP sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-PMTYP_TEXT sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-IDX_STOCK sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-CHNGIND sy-vline 
WA_/SCWM/S_BUF_HU_TO_CONT_STR-ENQUEUE_FLAG sy-vline      INTO ld_text SEPARATED BY SPACE.

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