ABAP Select data from SAP table /SCWM/S_WIP_SPREAD_020 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_WIP_SPREAD_020 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_WIP_SPREAD_020.

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_WIP_SPREAD_020 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_WIP_SPREAD_020 TYPE STANDARD TABLE OF /SCWM/S_WIP_SPREAD_020,
      WA_/SCWM/S_WIP_SPREAD_020 TYPE /SCWM/S_WIP_SPREAD_020,
      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_WIP_SPREAD_020> TYPE /SCWM/S_WIP_SPREAD_020.


*Original SAP ECC Select statement 
SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SCWM/S_WIP_SPREAD_020
  INTO TABLE IT_/SCWM/S_WIP_SPREAD_020.

*Select data and declare internal table using  in-line method @DATA 
SELECT *
  FROM /SCWM/S_WIP_SPREAD_020
  INTO TABLE @DATA(IT_/SCWM/S_WIP_SPREAD_0202).

*You can also declare the header/work area using the  in-line DATA declaration method 
READ TABLE IT_/SCWM/S_WIP_SPREAD_020 INDEX 1 INTO DATA(WA_/SCWM/S_WIP_SPREAD_0202).


*Latest ABAP cloud SELECT statement using the FIELDS syntax. But note to following the clean core principles you should not select directly from an SAP table 
* and should instead use a CDS view or create you own CDS and use that.
SELECT FROM /SCWM/S_WIP_SPREAD_020
  FIELDS *
*  WHERE would go here
  INTO TABLE @DATA(IT_/SCWM/S_WIP_SPREAD_0202).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SCWM/S_WIP_SPREAD_020 ASSIGNING </SCWM/S_WIP_SPREAD_020>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCWM/S_WIP_SPREAD_020>-SPREAD_PLCDAT = 1.
</SCWM/S_WIP_SPREAD_020>-SPREAD_PLCTIM = 1.
</SCWM/S_WIP_SPREAD_020>-LGNUM = 1.
</SCWM/S_WIP_SPREAD_020>-HUIDENT = 1.
</SCWM/S_WIP_SPREAD_020>-PMAT = 1.

ENDLOOP.

LOOP AT IT_/SCWM/S_WIP_SPREAD_020 INTO WA_/SCWM/S_WIP_SPREAD_020.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCWM/S_WIP_SPREAD_020-LETYP, sy-vline,
  WA_/SCWM/S_WIP_SPREAD_020-HUIDENT_PARENT, sy-vline,
  WA_/SCWM/S_WIP_SPREAD_020-HUIDENT_TOP, sy-vline,
  WA_/SCWM/S_WIP_SPREAD_020-LGPLA, sy-vline,
  WA_/SCWM/S_WIP_SPREAD_020-RSRC, sy-vline,
  WA_/SCWM/S_WIP_SPREAD_020-TU_NUM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCWM/S_WIP_SPREAD_020 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_WIP_SPREAD_020 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_WIP_SPREAD_020 INTO WA_/SCWM/S_WIP_SPREAD_020.


*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 HUID, internal->external for field HUIDENT
CALL FUNCTION 'CONVERSION_EXIT_HUID_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_WIP_SPREAD_020-HUIDENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_WIP_SPREAD_020-HUIDENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field PMAT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_WIP_SPREAD_020-PMAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_WIP_SPREAD_020-PMAT.
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_WIP_SPREAD_020-HUIDENT_PARENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_WIP_SPREAD_020-HUIDENT_PARENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit HUID, internal->external for field HUIDENT_TOP
CALL FUNCTION 'CONVERSION_EXIT_HUID_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_WIP_SPREAD_020-HUIDENT_TOP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_WIP_SPREAD_020-HUIDENT_TOP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TU_NUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_WIP_SPREAD_020-TU_NUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_WIP_SPREAD_020-TU_NUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TSP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_WIP_SPREAD_020-TSP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_WIP_SPREAD_020-TSP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNIT_GW
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_WIP_SPREAD_020-UNIT_GW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_WIP_SPREAD_020-UNIT_GW.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNIT_TW
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_WIP_SPREAD_020-UNIT_TW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_WIP_SPREAD_020-UNIT_TW.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNIT_GV
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_WIP_SPREAD_020-UNIT_GV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_WIP_SPREAD_020-UNIT_GV.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNIT_TV
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_WIP_SPREAD_020-UNIT_TV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_WIP_SPREAD_020-UNIT_TV.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNIT_LWH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_WIP_SPREAD_020-UNIT_LWH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_WIP_SPREAD_020-UNIT_LWH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNIT_MAX_LWH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_WIP_SPREAD_020-UNIT_MAX_LWH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_WIP_SPREAD_020-UNIT_MAX_LWH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PS_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_WIP_SPREAD_020-PS_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_WIP_SPREAD_020-PS_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PS_LEVEL_SEQ
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_WIP_SPREAD_020-PS_LEVEL_SEQ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_WIP_SPREAD_020-PS_LEVEL_SEQ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PI_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_WIP_SPREAD_020-PI_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_WIP_SPREAD_020-PI_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SALES_DOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_WIP_SPREAD_020-SALES_DOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_WIP_SPREAD_020-SALES_DOCUMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PSA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/S_WIP_SPREAD_020-PSA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/S_WIP_SPREAD_020-PSA.
WRITE:/ 'New Value:', ld_input.
ENDFORM.