ABAP Select data from SAP table WCS_SP_WP_NODE_HEADER 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_WP_NODE_HEADER 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_WP_NODE_HEADER. 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_WP_NODE_HEADER 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_WP_NODE_HEADER TYPE STANDARD TABLE OF WCS_SP_WP_NODE_HEADER,
      WA_WCS_SP_WP_NODE_HEADER TYPE WCS_SP_WP_NODE_HEADER,
      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_WP_NODE_HEADER> TYPE WCS_SP_WP_NODE_HEADER.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WCS_SP_WP_NODE_HEADER
*  INTO TABLE @DATA(IT_WCS_SP_WP_NODE_HEADER2).
*--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_WP_NODE_HEADER INDEX 1 INTO DATA(WA_WCS_SP_WP_NODE_HEADER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WCS_SP_WP_NODE_HEADER>-WAPINR = 1.
<WCS_SP_WP_NODE_HEADER>-IWERK = 1.
<WCS_SP_WP_NODE_HEADER>-WAPITYP = 1.
<WCS_SP_WP_NODE_HEADER>-USECTRL = 1.
<WCS_SP_WP_NODE_HEADER>-IWERK_TEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WCS_SP_WP_NODE_HEADER-WAPITYP_TEXT, sy-vline,
  WA_WCS_SP_WP_NODE_HEADER-WAPIUSE, sy-vline,
  WA_WCS_SP_WP_NODE_HEADER-WAPIUSE_TEXT, sy-vline,
  WA_WCS_SP_WP_NODE_HEADER-OBJNR, sy-vline,
  WA_WCS_SP_WP_NODE_HEADER-STXT, sy-vline,
  WA_WCS_SP_WP_NODE_HEADER-PRIOK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WCS_SP_WP_NODE_HEADER 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_WP_NODE_HEADER 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_WP_NODE_HEADER INTO WA_WCS_SP_WP_NODE_HEADER.


*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 WAPINR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WCS_SP_WP_NODE_HEADER-WAPINR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WCS_SP_WP_NODE_HEADER-WAPINR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TPLNR, internal->external for field TPLNR
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_WCS_SP_WP_NODE_HEADER-TPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WCS_SP_WP_NODE_HEADER-TPLNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field REFWAPI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WCS_SP_WP_NODE_HEADER-REFWAPI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WCS_SP_WP_NODE_HEADER-REFWAPI.
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_WP_NODE_HEADER_STR, 
WAPINR TYPE STRING,
IWERK TYPE STRING,
WAPITYP TYPE STRING,
USECTRL TYPE STRING,
IWERK_TEXT TYPE STRING,
WAPITYP_TEXT TYPE STRING,
WAPIUSE TYPE STRING,
WAPIUSE_TEXT TYPE STRING,
OBJNR TYPE STRING,
STXT TYPE STRING,
PRIOK TYPE STRING,
PRIOK_TEXT TYPE STRING,
DATEFR TYPE STRING,
TIMEFR TYPE STRING,
DATETO TYPE STRING,
TIMETO TYPE STRING,
CRNAME TYPE STRING,
CRDATE TYPE STRING,
CRTIME TYPE STRING,
CHNAME TYPE STRING,
CHDATE TYPE STRING,
CHTIME TYPE STRING,
SYSSTFLG TYPE STRING,
CREA TYPE STRING,
PREP TYPE STRING,
CHGN TYPE STRING,
PWP TYPE STRING,
WPHO TYPE STRING,
CLSD TYPE STRING,
REJC TYPE STRING,
INAK TYPE STRING,
DLFL TYPE STRING,
TENT TYPE STRING,
MOBI TYPE STRING,
SYSST TYPE STRING,
USRST TYPE STRING,
TLCNT_ICON TYPE STRING,
TLCNT_TEXT TYPE STRING,
LCPHASE_ICON TYPE STRING,
LCPHASE_TEXT TYPE STRING,
LTXT TYPE STRING,
LTXT_FREE TYPE STRING,
LTXT_LOCKED TYPE STRING,
EAMS_TEC_OBJ_TYPE TYPE STRING,
EAMS_TEC_OBJ_NO TYPE STRING,
EAMS_TEC_OBJ_TYPE_TXT TYPE STRING,
EAMS_TEC_OBJ_TEXT TYPE STRING,
TPLNR TYPE STRING,
EAMS_EQUNR TYPE STRING,
INGRP TYPE STRING,
WKCR TYPE STRING,
PLANT TYPE STRING,
BEGRU TYPE STRING,
INGRP_TEXT TYPE STRING,
WKCR_TEXT TYPE STRING,
PLANT_TEXT TYPE STRING,
BEGRU_TEXT TYPE STRING,
EAMS_OBJNR TYPE STRING,
OBJECTTYPE TYPE STRING,
OBJECTKEY TYPE STRING,
REFOBJ TYPE STRING,
REFWAPI TYPE STRING,
REFWAPIUSE TYPE STRING,
EDITABLE TYPE STRING,
EDITABLE_LTXT TYPE STRING,
LOCKERRFLG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WCS_SP_WP_NODE_HEADER_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_WP_NODE_HEADER_STR-WAPINR sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-IWERK sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-WAPITYP sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-USECTRL sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-IWERK_TEXT sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-WAPITYP_TEXT sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-WAPIUSE sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-WAPIUSE_TEXT sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-OBJNR sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-STXT sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-PRIOK sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-PRIOK_TEXT sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-DATEFR sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-TIMEFR sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-DATETO sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-TIMETO sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-CRNAME sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-CRDATE sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-CRTIME sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-CHNAME sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-CHDATE sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-CHTIME sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-SYSSTFLG sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-CREA sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-PREP sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-CHGN sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-PWP sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-WPHO sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-CLSD sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-REJC sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-INAK sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-DLFL sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-TENT sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-MOBI sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-SYSST sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-USRST sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-TLCNT_ICON sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-TLCNT_TEXT sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-LCPHASE_ICON sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-LCPHASE_TEXT sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-LTXT sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-LTXT_FREE sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-LTXT_LOCKED sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-EAMS_TEC_OBJ_TYPE sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-EAMS_TEC_OBJ_NO sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-EAMS_TEC_OBJ_TYPE_TXT sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-EAMS_TEC_OBJ_TEXT sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-TPLNR sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-EAMS_EQUNR sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-INGRP sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-WKCR sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-PLANT sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-BEGRU sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-INGRP_TEXT sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-WKCR_TEXT sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-PLANT_TEXT sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-BEGRU_TEXT sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-EAMS_OBJNR sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-OBJECTTYPE sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-OBJECTKEY sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-REFOBJ sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-REFWAPI sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-REFWAPIUSE sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-EDITABLE sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-EDITABLE_LTXT sy-vline 
WA_WCS_SP_WP_NODE_HEADER_STR-LOCKERRFLG sy-vline      INTO ld_text SEPARATED BY SPACE.

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