ABAP Select data from SAP table CWRKCTRGRPTREE into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CWRKCTRGRPTREE
*  INTO TABLE @DATA(IT_CWRKCTRGRPTREE2).
*--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_CWRKCTRGRPTREE INDEX 1 INTO DATA(WA_CWRKCTRGRPTREE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CWRKCTRGRPTREE>-MANDT = 1.
<CWRKCTRGRPTREE>-HIERARCHYROOTNODE = 1.
<CWRKCTRGRPTREE>-HIERARCHYPARENTNODE = 1.
<CWRKCTRGRPTREE>-HIERARCHYNODE = 1.
<CWRKCTRGRPTREE>-HIERARCHYNODETYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CWRKCTRGRPTREE-PARENTNODE, sy-vline,
  WA_CWRKCTRGRPTREE-HIERARCHYNODEUNIQUEID, sy-vline,
  WA_CWRKCTRGRPTREE-WORKCENTERGROUPROOT, sy-vline,
  WA_CWRKCTRGRPTREE-WORKCENTERGROUP, sy-vline,
  WA_CWRKCTRGRPTREE-OBJECTNAME, sy-vline,
  WA_CWRKCTRGRPTREE-OBJECTDESCRIPTION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CWRKCTRGRPTREE 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_CWRKCTRGRPTREE 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_CWRKCTRGRPTREE INTO WA_CWRKCTRGRPTREE.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_CWRKCTRGRPTREE_STR, 
MANDT TYPE STRING,
HIERARCHYROOTNODE TYPE STRING,
HIERARCHYPARENTNODE TYPE STRING,
HIERARCHYNODE TYPE STRING,
HIERARCHYNODETYPE TYPE STRING,
PARENTNODE TYPE STRING,
HIERARCHYNODEUNIQUEID TYPE STRING,
WORKCENTERGROUPROOT TYPE STRING,
WORKCENTERGROUP TYPE STRING,
OBJECTNAME TYPE STRING,
OBJECTDESCRIPTION TYPE STRING,
OBJECTTYPETEXT TYPE STRING,
WORKCENTERGROUPTYPE TYPE STRING,
WORKCENTERGROUPTYPEDESCRIPTION TYPE STRING,
WORKCENTERGROUPROOTTYPE TYPE STRING,
WORKCENTERGROUPROOTTYPEDESC TYPE STRING,
NUMBEROFWORKCENTERS TYPE STRING,
WORKCENTERGROUPOBJECTCOUNT TYPE STRING,
PLANT TYPE STRING,
PLANTNAME TYPE STRING,
WRKCTRGRPNODEID TYPE STRING,
WRKCTRGRPPARENTNODEID TYPE STRING,
HIERARCHYNODESUBTREESIZE TYPE STRING,
WRKCTRGRPHIERARCHYLEVEL TYPE STRING,
HIERARCHYNODEISORPHAN TYPE STRING,
HIERARCHYNODEISCYCLEENDPOINT TYPE STRING,
WRKCTRGRPDRILLSTATE TYPE STRING,
WORKCENTERGROUPISUPDATEENABLED TYPE STRING,
WORKCENTERGROUPISDELETEENABLED TYPE STRING,
SHIFTNOTETYPE TYPE STRING,
SHIFTREPORTTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CWRKCTRGRPTREE_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_CWRKCTRGRPTREE_STR-MANDT sy-vline 
WA_CWRKCTRGRPTREE_STR-HIERARCHYROOTNODE sy-vline 
WA_CWRKCTRGRPTREE_STR-HIERARCHYPARENTNODE sy-vline 
WA_CWRKCTRGRPTREE_STR-HIERARCHYNODE sy-vline 
WA_CWRKCTRGRPTREE_STR-HIERARCHYNODETYPE sy-vline 
WA_CWRKCTRGRPTREE_STR-PARENTNODE sy-vline 
WA_CWRKCTRGRPTREE_STR-HIERARCHYNODEUNIQUEID sy-vline 
WA_CWRKCTRGRPTREE_STR-WORKCENTERGROUPROOT sy-vline 
WA_CWRKCTRGRPTREE_STR-WORKCENTERGROUP sy-vline 
WA_CWRKCTRGRPTREE_STR-OBJECTNAME sy-vline 
WA_CWRKCTRGRPTREE_STR-OBJECTDESCRIPTION sy-vline 
WA_CWRKCTRGRPTREE_STR-OBJECTTYPETEXT sy-vline 
WA_CWRKCTRGRPTREE_STR-WORKCENTERGROUPTYPE sy-vline 
WA_CWRKCTRGRPTREE_STR-WORKCENTERGROUPTYPEDESCRIPTION sy-vline 
WA_CWRKCTRGRPTREE_STR-WORKCENTERGROUPROOTTYPE sy-vline 
WA_CWRKCTRGRPTREE_STR-WORKCENTERGROUPROOTTYPEDESC sy-vline 
WA_CWRKCTRGRPTREE_STR-NUMBEROFWORKCENTERS sy-vline 
WA_CWRKCTRGRPTREE_STR-WORKCENTERGROUPOBJECTCOUNT sy-vline 
WA_CWRKCTRGRPTREE_STR-PLANT sy-vline 
WA_CWRKCTRGRPTREE_STR-PLANTNAME sy-vline 
WA_CWRKCTRGRPTREE_STR-WRKCTRGRPNODEID sy-vline 
WA_CWRKCTRGRPTREE_STR-WRKCTRGRPPARENTNODEID sy-vline 
WA_CWRKCTRGRPTREE_STR-HIERARCHYNODESUBTREESIZE sy-vline 
WA_CWRKCTRGRPTREE_STR-WRKCTRGRPHIERARCHYLEVEL sy-vline 
WA_CWRKCTRGRPTREE_STR-HIERARCHYNODEISORPHAN sy-vline 
WA_CWRKCTRGRPTREE_STR-HIERARCHYNODEISCYCLEENDPOINT sy-vline 
WA_CWRKCTRGRPTREE_STR-WRKCTRGRPDRILLSTATE sy-vline 
WA_CWRKCTRGRPTREE_STR-WORKCENTERGROUPISUPDATEENABLED sy-vline 
WA_CWRKCTRGRPTREE_STR-WORKCENTERGROUPISDELETEENABLED sy-vline 
WA_CWRKCTRGRPTREE_STR-SHIFTNOTETYPE sy-vline 
WA_CWRKCTRGRPTREE_STR-SHIFTREPORTTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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