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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCWM/S_INS_TU_WHRPOS
*  INTO TABLE @DATA(IT_/SCWM/S_INS_TU_WHRPOS2).
*--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_INS_TU_WHRPOS INDEX 1 INTO DATA(WA_/SCWM/S_INS_TU_WHRPOS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCWM/S_INS_TU_WHRPOS>-DOCNO = 1.
</SCWM/S_INS_TU_WHRPOS>-ITEMNO01 = 1.
</SCWM/S_INS_TU_WHRPOS>-ITEMNO02 = 1.
</SCWM/S_INS_TU_WHRPOS>-ITEMNO03 = 1.
</SCWM/S_INS_TU_WHRPOS>-ITEMNO04 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCWM/S_INS_TU_WHRPOS-ITEMNO05, sy-vline,
  WA_/SCWM/S_INS_TU_WHRPOS-ITEMNO06, sy-vline,
  WA_/SCWM/S_INS_TU_WHRPOS-ITEMNO07, sy-vline,
  WA_/SCWM/S_INS_TU_WHRPOS-ITEMNO08, sy-vline,
  WA_/SCWM/S_INS_TU_WHRPOS-ITEMNO09, sy-vline,
  WA_/SCWM/S_INS_TU_WHRPOS-ITEMNO10, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCWM/S_INS_TU_WHRPOS 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_INS_TU_WHRPOS 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_INS_TU_WHRPOS INTO WA_/SCWM/S_INS_TU_WHRPOS.


*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 DOCNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_INS_TU_WHRPOS-DOCNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_INS_TU_WHRPOS-DOCNO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ITEMNO01
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_INS_TU_WHRPOS-ITEMNO01
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_INS_TU_WHRPOS-ITEMNO01.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ITEMNO02
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_INS_TU_WHRPOS-ITEMNO02
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_INS_TU_WHRPOS-ITEMNO02.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ITEMNO03
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_INS_TU_WHRPOS-ITEMNO03
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_INS_TU_WHRPOS-ITEMNO03.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ITEMNO04
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_INS_TU_WHRPOS-ITEMNO04
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_INS_TU_WHRPOS-ITEMNO04.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ITEMNO05
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_INS_TU_WHRPOS-ITEMNO05
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_INS_TU_WHRPOS-ITEMNO05.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ITEMNO06
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_INS_TU_WHRPOS-ITEMNO06
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_INS_TU_WHRPOS-ITEMNO06.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ITEMNO07
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_INS_TU_WHRPOS-ITEMNO07
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_INS_TU_WHRPOS-ITEMNO07.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ITEMNO08
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_INS_TU_WHRPOS-ITEMNO08
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_INS_TU_WHRPOS-ITEMNO08.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ITEMNO09
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_INS_TU_WHRPOS-ITEMNO09
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_INS_TU_WHRPOS-ITEMNO09.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ITEMNO10
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_INS_TU_WHRPOS-ITEMNO10
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_INS_TU_WHRPOS-ITEMNO10.
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_INS_TU_WHRPOS_STR, 
DOCNO TYPE STRING,
ITEMNO01 TYPE STRING,
ITEMNO02 TYPE STRING,
ITEMNO03 TYPE STRING,
ITEMNO04 TYPE STRING,
ITEMNO05 TYPE STRING,
ITEMNO06 TYPE STRING,
ITEMNO07 TYPE STRING,
ITEMNO08 TYPE STRING,
ITEMNO09 TYPE STRING,
ITEMNO10 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCWM/S_INS_TU_WHRPOS_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_INS_TU_WHRPOS_STR-DOCNO sy-vline 
WA_/SCWM/S_INS_TU_WHRPOS_STR-ITEMNO01 sy-vline 
WA_/SCWM/S_INS_TU_WHRPOS_STR-ITEMNO02 sy-vline 
WA_/SCWM/S_INS_TU_WHRPOS_STR-ITEMNO03 sy-vline 
WA_/SCWM/S_INS_TU_WHRPOS_STR-ITEMNO04 sy-vline 
WA_/SCWM/S_INS_TU_WHRPOS_STR-ITEMNO05 sy-vline 
WA_/SCWM/S_INS_TU_WHRPOS_STR-ITEMNO06 sy-vline 
WA_/SCWM/S_INS_TU_WHRPOS_STR-ITEMNO07 sy-vline 
WA_/SCWM/S_INS_TU_WHRPOS_STR-ITEMNO08 sy-vline 
WA_/SCWM/S_INS_TU_WHRPOS_STR-ITEMNO09 sy-vline 
WA_/SCWM/S_INS_TU_WHRPOS_STR-ITEMNO10 sy-vline      INTO ld_text SEPARATED BY SPACE.

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