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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCWM/S_WVMGT_UI_WHO
*  INTO TABLE @DATA(IT_/SCWM/S_WVMGT_UI_WHO2).
*--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_WVMGT_UI_WHO INDEX 1 INTO DATA(WA_/SCWM/S_WVMGT_UI_WHO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCWM/S_WVMGT_UI_WHO>-LGNUM = 1.
</SCWM/S_WVMGT_UI_WHO>-WHO = 1.
</SCWM/S_WVMGT_UI_WHO>-WCR = 1.
</SCWM/S_WVMGT_UI_WHO>-TYPE = 1.
</SCWM/S_WVMGT_UI_WHO>-HDR_PROCTY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCWM/S_WVMGT_UI_WHO-QUEUE, sy-vline,
  WA_/SCWM/S_WVMGT_UI_WHO-WAVE, sy-vline,
  WA_/SCWM/S_WVMGT_UI_WHO-STATUS, sy-vline,
  WA_/SCWM/S_WVMGT_UI_WHO-AREAWHO, sy-vline,
  WA_/SCWM/S_WVMGT_UI_WHO-CREATED_BY, sy-vline,
  WA_/SCWM/S_WVMGT_UI_WHO-CREATED_DATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCWM/S_WVMGT_UI_WHO 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_WVMGT_UI_WHO 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_WVMGT_UI_WHO INTO WA_/SCWM/S_WVMGT_UI_WHO.


*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 WHO
CALL FUNCTION 'CONVERSION_EXIT_ALPH0_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_WVMGT_UI_WHO-WHO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_WVMGT_UI_WHO-WHO.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit PROCR, internal->external for field PROCESSOR
CALL FUNCTION 'CONVERSION_EXIT_PROCR_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_WVMGT_UI_WHO-PROCESSOR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_WVMGT_UI_WHO-PROCESSOR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPH0, internal->external for field SPLITWHOID
CALL FUNCTION 'CONVERSION_EXIT_ALPH0_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_WVMGT_UI_WHO-SPLITWHOID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_WVMGT_UI_WHO-SPLITWHOID.
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_WVMGT_UI_WHO_STR, 
LGNUM TYPE STRING,
WHO TYPE STRING,
WCR TYPE STRING,
TYPE TYPE STRING,
HDR_PROCTY TYPE STRING,
QUEUE TYPE STRING,
WAVE TYPE STRING,
STATUS TYPE STRING,
AREAWHO TYPE STRING,
CREATED_BY TYPE STRING,
CREATED_DATE TYPE STRING,
CREATED_TIME TYPE STRING,
PROCESSOR TYPE STRING,
RSRC TYPE STRING,
STARTED_DATE TYPE STRING,
STARTED_TIME TYPE STRING,
LS_DATE TYPE STRING,
LS_TIME TYPE STRING,
CHANGED_BY TYPE STRING,
CHANGED_DATE TYPE STRING,
CHANGED_TIME TYPE STRING,
CONFIRMED_BY TYPE STRING,
CONFIRMED_DATE TYPE STRING,
CONFIRMED_TIME TYPE STRING,
PLANDURA TYPE STRING,
UNIT_T TYPE STRING,
FLGINV TYPE STRING,
TOPWHOID TYPE STRING,
REFWHOID TYPE STRING,
FLGWHO TYPE STRING,
FLGTO TYPE STRING,
FLGWO TYPE STRING,
WHOLOGNO TYPE STRING,
SPLITWHOID TYPE STRING,
FLGSPLIT TYPE STRING,
HAZMAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCWM/S_WVMGT_UI_WHO_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_WVMGT_UI_WHO_STR-LGNUM sy-vline 
WA_/SCWM/S_WVMGT_UI_WHO_STR-WHO sy-vline 
WA_/SCWM/S_WVMGT_UI_WHO_STR-WCR sy-vline 
WA_/SCWM/S_WVMGT_UI_WHO_STR-TYPE sy-vline 
WA_/SCWM/S_WVMGT_UI_WHO_STR-HDR_PROCTY sy-vline 
WA_/SCWM/S_WVMGT_UI_WHO_STR-QUEUE sy-vline 
WA_/SCWM/S_WVMGT_UI_WHO_STR-WAVE sy-vline 
WA_/SCWM/S_WVMGT_UI_WHO_STR-STATUS sy-vline 
WA_/SCWM/S_WVMGT_UI_WHO_STR-AREAWHO sy-vline 
WA_/SCWM/S_WVMGT_UI_WHO_STR-CREATED_BY sy-vline 
WA_/SCWM/S_WVMGT_UI_WHO_STR-CREATED_DATE sy-vline 
WA_/SCWM/S_WVMGT_UI_WHO_STR-CREATED_TIME sy-vline 
WA_/SCWM/S_WVMGT_UI_WHO_STR-PROCESSOR sy-vline 
WA_/SCWM/S_WVMGT_UI_WHO_STR-RSRC sy-vline 
WA_/SCWM/S_WVMGT_UI_WHO_STR-STARTED_DATE sy-vline 
WA_/SCWM/S_WVMGT_UI_WHO_STR-STARTED_TIME sy-vline 
WA_/SCWM/S_WVMGT_UI_WHO_STR-LS_DATE sy-vline 
WA_/SCWM/S_WVMGT_UI_WHO_STR-LS_TIME sy-vline 
WA_/SCWM/S_WVMGT_UI_WHO_STR-CHANGED_BY sy-vline 
WA_/SCWM/S_WVMGT_UI_WHO_STR-CHANGED_DATE sy-vline 
WA_/SCWM/S_WVMGT_UI_WHO_STR-CHANGED_TIME sy-vline 
WA_/SCWM/S_WVMGT_UI_WHO_STR-CONFIRMED_BY sy-vline 
WA_/SCWM/S_WVMGT_UI_WHO_STR-CONFIRMED_DATE sy-vline 
WA_/SCWM/S_WVMGT_UI_WHO_STR-CONFIRMED_TIME sy-vline 
WA_/SCWM/S_WVMGT_UI_WHO_STR-PLANDURA sy-vline 
WA_/SCWM/S_WVMGT_UI_WHO_STR-UNIT_T sy-vline 
WA_/SCWM/S_WVMGT_UI_WHO_STR-FLGINV sy-vline 
WA_/SCWM/S_WVMGT_UI_WHO_STR-TOPWHOID sy-vline 
WA_/SCWM/S_WVMGT_UI_WHO_STR-REFWHOID sy-vline 
WA_/SCWM/S_WVMGT_UI_WHO_STR-FLGWHO sy-vline 
WA_/SCWM/S_WVMGT_UI_WHO_STR-FLGTO sy-vline 
WA_/SCWM/S_WVMGT_UI_WHO_STR-FLGWO sy-vline 
WA_/SCWM/S_WVMGT_UI_WHO_STR-WHOLOGNO sy-vline 
WA_/SCWM/S_WVMGT_UI_WHO_STR-SPLITWHOID sy-vline 
WA_/SCWM/S_WVMGT_UI_WHO_STR-FLGSPLIT sy-vline 
WA_/SCWM/S_WVMGT_UI_WHO_STR-HAZMAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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