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

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCWM/D_WB_WT
*  INTO TABLE @DATA(IT_/SCWM/D_WB_WT2).
*--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/D_WB_WT INDEX 1 INTO DATA(WA_/SCWM/D_WB_WT2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCWM/D_WB_WT-FLGHUTO, sy-vline,
  WA_/SCWM/D_WB_WT-AAREA, sy-vline,
  WA_/SCWM/D_WB_WT-ACT_TYPE, sy-vline,
  WA_/SCWM/D_WB_WT-TRART, sy-vline,
  WA_/SCWM/D_WB_WT-VLTYP, sy-vline,
  WA_/SCWM/D_WB_WT-VLBER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCWM/D_WB_WT 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/D_WB_WT 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/D_WB_WT INTO WA_/SCWM/D_WB_WT.


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

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

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

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

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

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

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

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

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

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

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

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

*Conversion exit TSTLC, internal->external for field SNAP_TIMESTAMP
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/D_WB_WT-SNAP_TIMESTAMP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/D_WB_WT-SNAP_TIMESTAMP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTWH, internal->external for field CONFIRMED_AT
CALL FUNCTION 'CONVERSION_EXIT_TSTWH_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/D_WB_WT-CONFIRMED_AT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/D_WB_WT-CONFIRMED_AT.
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/D_WB_WT_STR, 
MANDT TYPE STRING,
LGNUM TYPE STRING,
TANUM TYPE STRING,
TAPOS TYPE STRING,
COUNTER TYPE STRING,
FLGHUTO TYPE STRING,
AAREA TYPE STRING,
ACT_TYPE TYPE STRING,
TRART TYPE STRING,
VLTYP TYPE STRING,
VLBER TYPE STRING,
VLPLA TYPE STRING,
VLENR TYPE STRING,
NLTYP TYPE STRING,
NLBER TYPE STRING,
NLPLA TYPE STRING,
NLENR TYPE STRING,
MATNR TYPE STRING,
MATKL TYPE STRING,
CWREL TYPE STRING,
WEIGHT TYPE STRING,
UNIT_W TYPE STRING,
VOLUM TYPE STRING,
UNIT_V TYPE STRING,
CAPA TYPE STRING,
NISTM TYPE STRING,
MEINS TYPE STRING,
NISTA TYPE STRING,
ALTME TYPE STRING,
PROCS TYPE STRING,
PROCTY TYPE STRING,
PRCES TYPE STRING,
ENTITLED TYPE STRING,
LETYP TYPE STRING,
HAZMAT TYPE STRING,
RSRC_TYPE TYPE STRING,
SLOC_TYPE TYPE STRING,
DLOC_TYPE TYPE STRING,
VAS TYPE STRING,
EXCCODE TYPE STRING,
BUSCON TYPE STRING,
EXEC_STEP TYPE STRING,
REFPOS TYPE STRING,
WHO TYPE STRING,
HDR_PROCTY TYPE STRING,
CONFIRM_DATE TYPE STRING,
CONFIRM_TIME TYPE STRING,
EEW_WT TYPE STRING,
SNAP_TIMESTAMP TYPE STRING,
CONFIRMED_AT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCWM/D_WB_WT_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/D_WB_WT_STR-MANDT sy-vline 
WA_/SCWM/D_WB_WT_STR-LGNUM sy-vline 
WA_/SCWM/D_WB_WT_STR-TANUM sy-vline 
WA_/SCWM/D_WB_WT_STR-TAPOS sy-vline 
WA_/SCWM/D_WB_WT_STR-COUNTER sy-vline 
WA_/SCWM/D_WB_WT_STR-FLGHUTO sy-vline 
WA_/SCWM/D_WB_WT_STR-AAREA sy-vline 
WA_/SCWM/D_WB_WT_STR-ACT_TYPE sy-vline 
WA_/SCWM/D_WB_WT_STR-TRART sy-vline 
WA_/SCWM/D_WB_WT_STR-VLTYP sy-vline 
WA_/SCWM/D_WB_WT_STR-VLBER sy-vline 
WA_/SCWM/D_WB_WT_STR-VLPLA sy-vline 
WA_/SCWM/D_WB_WT_STR-VLENR sy-vline 
WA_/SCWM/D_WB_WT_STR-NLTYP sy-vline 
WA_/SCWM/D_WB_WT_STR-NLBER sy-vline 
WA_/SCWM/D_WB_WT_STR-NLPLA sy-vline 
WA_/SCWM/D_WB_WT_STR-NLENR sy-vline 
WA_/SCWM/D_WB_WT_STR-MATNR sy-vline 
WA_/SCWM/D_WB_WT_STR-MATKL sy-vline 
WA_/SCWM/D_WB_WT_STR-CWREL sy-vline 
WA_/SCWM/D_WB_WT_STR-WEIGHT sy-vline 
WA_/SCWM/D_WB_WT_STR-UNIT_W sy-vline 
WA_/SCWM/D_WB_WT_STR-VOLUM sy-vline 
WA_/SCWM/D_WB_WT_STR-UNIT_V sy-vline 
WA_/SCWM/D_WB_WT_STR-CAPA sy-vline 
WA_/SCWM/D_WB_WT_STR-NISTM sy-vline 
WA_/SCWM/D_WB_WT_STR-MEINS sy-vline 
WA_/SCWM/D_WB_WT_STR-NISTA sy-vline 
WA_/SCWM/D_WB_WT_STR-ALTME sy-vline 
WA_/SCWM/D_WB_WT_STR-PROCS sy-vline 
WA_/SCWM/D_WB_WT_STR-PROCTY sy-vline 
WA_/SCWM/D_WB_WT_STR-PRCES sy-vline 
WA_/SCWM/D_WB_WT_STR-ENTITLED sy-vline 
WA_/SCWM/D_WB_WT_STR-LETYP sy-vline 
WA_/SCWM/D_WB_WT_STR-HAZMAT sy-vline 
WA_/SCWM/D_WB_WT_STR-RSRC_TYPE sy-vline 
WA_/SCWM/D_WB_WT_STR-SLOC_TYPE sy-vline 
WA_/SCWM/D_WB_WT_STR-DLOC_TYPE sy-vline 
WA_/SCWM/D_WB_WT_STR-VAS sy-vline 
WA_/SCWM/D_WB_WT_STR-EXCCODE sy-vline 
WA_/SCWM/D_WB_WT_STR-BUSCON sy-vline 
WA_/SCWM/D_WB_WT_STR-EXEC_STEP sy-vline 
WA_/SCWM/D_WB_WT_STR-REFPOS sy-vline 
WA_/SCWM/D_WB_WT_STR-WHO sy-vline 
WA_/SCWM/D_WB_WT_STR-HDR_PROCTY sy-vline 
WA_/SCWM/D_WB_WT_STR-CONFIRM_DATE sy-vline 
WA_/SCWM/D_WB_WT_STR-CONFIRM_TIME sy-vline 
WA_/SCWM/D_WB_WT_STR-EEW_WT sy-vline 
WA_/SCWM/D_WB_WT_STR-SNAP_TIMESTAMP sy-vline 
WA_/SCWM/D_WB_WT_STR-CONFIRMED_AT sy-vline      INTO ld_text SEPARATED BY SPACE.

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