ABAP Select data from SAP table WCS_SP_WCD_ITEM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WCS_SP_WCD_ITEM 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 WCS_SP_WCD_ITEM. 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 WCS_SP_WCD_ITEM 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_WCS_SP_WCD_ITEM TYPE STANDARD TABLE OF WCS_SP_WCD_ITEM,
      WA_WCS_SP_WCD_ITEM TYPE WCS_SP_WCD_ITEM,
      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: <WCS_SP_WCD_ITEM> TYPE WCS_SP_WCD_ITEM.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM WCS_SP_WCD_ITEM
  INTO TABLE IT_WCS_SP_WCD_ITEM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WCS_SP_WCD_ITEM
*  INTO TABLE @DATA(IT_WCS_SP_WCD_ITEM2).
*--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_WCS_SP_WCD_ITEM INDEX 1 INTO DATA(WA_WCS_SP_WCD_ITEM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_WCS_SP_WCD_ITEM ASSIGNING <WCS_SP_WCD_ITEM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WCS_SP_WCD_ITEM>-WCITM = 1.
<WCS_SP_WCD_ITEM>-OBJNR = 1.
<WCS_SP_WCD_ITEM>-SEQ = 1.
<WCS_SP_WCD_ITEM>-ITMTYP = 1.
<WCS_SP_WCD_ITEM>-CCOBJ = 1.

ENDLOOP.

LOOP AT IT_WCS_SP_WCD_ITEM INTO WA_WCS_SP_WCD_ITEM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WCS_SP_WCD_ITEM-STXT, sy-vline,
  WA_WCS_SP_WCD_ITEM-SYSST, sy-vline,
  WA_WCS_SP_WCD_ITEM-USRST, sy-vline,
  WA_WCS_SP_WCD_ITEM-LOCATION, sy-vline,
  WA_WCS_SP_WCD_ITEM-CONTROL, sy-vline,
  WA_WCS_SP_WCD_ITEM-TGGRP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WCS_SP_WCD_ITEM 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_WCS_SP_WCD_ITEM 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_WCS_SP_WCD_ITEM INTO WA_WCS_SP_WCD_ITEM.


*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 TGNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WCS_SP_WCD_ITEM-TGNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WCS_SP_WCD_ITEM-TGNR.
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_WCS_SP_WCD_ITEM_STR, 
WCITM TYPE STRING,
OBJNR TYPE STRING,
SEQ TYPE STRING,
ITMTYP TYPE STRING,
CCOBJ TYPE STRING,
STXT TYPE STRING,
SYSST TYPE STRING,
USRST TYPE STRING,
LOCATION TYPE STRING,
CONTROL TYPE STRING,
TGGRP TYPE STRING,
TGPROC TYPE STRING,
TGTYP TYPE STRING,
TGFORM TYPE STRING,
PHBLTYP TYPE STRING,
TGFLG TYPE STRING,
TGNR TYPE STRING,
PHBLFLG TYPE STRING,
PHBLNR TYPE STRING,
TGSEQ TYPE STRING,
TGTXT TYPE STRING,
TGGRP_TEXT TYPE STRING,
TGPROC_TEXT TYPE STRING,
TGTYP_TEXT TYPE STRING,
TGFORM_TEXT TYPE STRING,
PHBLTYP_TEXT TYPE STRING,
UNPROC TYPE STRING,
UNTYP TYPE STRING,
UNSEQ TYPE STRING,
UNTXT TYPE STRING,
UNPROC_TEXT TYPE STRING,
UNTYP_TEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WCS_SP_WCD_ITEM_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_WCS_SP_WCD_ITEM_STR-WCITM sy-vline 
WA_WCS_SP_WCD_ITEM_STR-OBJNR sy-vline 
WA_WCS_SP_WCD_ITEM_STR-SEQ sy-vline 
WA_WCS_SP_WCD_ITEM_STR-ITMTYP sy-vline 
WA_WCS_SP_WCD_ITEM_STR-CCOBJ sy-vline 
WA_WCS_SP_WCD_ITEM_STR-STXT sy-vline 
WA_WCS_SP_WCD_ITEM_STR-SYSST sy-vline 
WA_WCS_SP_WCD_ITEM_STR-USRST sy-vline 
WA_WCS_SP_WCD_ITEM_STR-LOCATION sy-vline 
WA_WCS_SP_WCD_ITEM_STR-CONTROL sy-vline 
WA_WCS_SP_WCD_ITEM_STR-TGGRP sy-vline 
WA_WCS_SP_WCD_ITEM_STR-TGPROC sy-vline 
WA_WCS_SP_WCD_ITEM_STR-TGTYP sy-vline 
WA_WCS_SP_WCD_ITEM_STR-TGFORM sy-vline 
WA_WCS_SP_WCD_ITEM_STR-PHBLTYP sy-vline 
WA_WCS_SP_WCD_ITEM_STR-TGFLG sy-vline 
WA_WCS_SP_WCD_ITEM_STR-TGNR sy-vline 
WA_WCS_SP_WCD_ITEM_STR-PHBLFLG sy-vline 
WA_WCS_SP_WCD_ITEM_STR-PHBLNR sy-vline 
WA_WCS_SP_WCD_ITEM_STR-TGSEQ sy-vline 
WA_WCS_SP_WCD_ITEM_STR-TGTXT sy-vline 
WA_WCS_SP_WCD_ITEM_STR-TGGRP_TEXT sy-vline 
WA_WCS_SP_WCD_ITEM_STR-TGPROC_TEXT sy-vline 
WA_WCS_SP_WCD_ITEM_STR-TGTYP_TEXT sy-vline 
WA_WCS_SP_WCD_ITEM_STR-TGFORM_TEXT sy-vline 
WA_WCS_SP_WCD_ITEM_STR-PHBLTYP_TEXT sy-vline 
WA_WCS_SP_WCD_ITEM_STR-UNPROC sy-vline 
WA_WCS_SP_WCD_ITEM_STR-UNTYP sy-vline 
WA_WCS_SP_WCD_ITEM_STR-UNSEQ sy-vline 
WA_WCS_SP_WCD_ITEM_STR-UNTXT sy-vline 
WA_WCS_SP_WCD_ITEM_STR-UNPROC_TEXT sy-vline 
WA_WCS_SP_WCD_ITEM_STR-UNTYP_TEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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