ABAP Select data from SAP table CCHARCCTLGTREE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CCHARCCTLGTREE
*  INTO TABLE @DATA(IT_CCHARCCTLGTREE2).
*--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_CCHARCCTLGTREE INDEX 1 INTO DATA(WA_CCHARCCTLGTREE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CCHARCCTLGTREE>-MANDT = 1.
<CCHARCCTLGTREE>-PRODALLOCCHARCCTLGPATHUUID = 1.
<CCHARCCTLGTREE>-PRODALLOCCHARCCTLGPATHDESC = 1.
<CCHARCCTLGTREE>-PRODALLOCCHARCCTLGPATHINTID = 1.
<CCHARCCTLGTREE>-PRODALLOCCHARCCATALOGTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CCHARCCTLGTREE-PRODALLOCCHARCCATALOGUSETYPE, sy-vline,
  WA_CCHARCCTLGTREE-PRODALLOCCHARCCATALOGUUID, sy-vline,
  WA_CCHARCCTLGTREE-PRODALLOCCHARCCTLGPARPATHINTID, sy-vline,
  WA_CCHARCCTLGTREE-PRODALLOCCHARCCATALOGCHARCTYPE, sy-vline,
  WA_CCHARCCTLGTREE-PRODALLOCCHARCCATALOGPATHTYPE, sy-vline,
  WA_CCHARCCTLGTREE-PRODALLOCCHARCCTLGPATHSELNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CCHARCCTLGTREE 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_CCHARCCTLGTREE 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_CCHARCCTLGTREE INTO WA_CCHARCCTLGTREE.


*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_CCHARCCTLGTREE_STR, 
MANDT TYPE STRING,
PRODALLOCCHARCCTLGPATHUUID TYPE STRING,
PRODALLOCCHARCCTLGPATHDESC TYPE STRING,
PRODALLOCCHARCCTLGPATHINTID TYPE STRING,
PRODALLOCCHARCCATALOGTYPE TYPE STRING,
PRODALLOCCHARCCATALOGUSETYPE TYPE STRING,
PRODALLOCCHARCCATALOGUUID TYPE STRING,
PRODALLOCCHARCCTLGPARPATHINTID TYPE STRING,
PRODALLOCCHARCCATALOGCHARCTYPE TYPE STRING,
PRODALLOCCHARCCATALOGPATHTYPE TYPE STRING,
PRODALLOCCHARCCTLGPATHSELNAME TYPE STRING,
PRODALLOCCHARCCTLGPATHSEL TYPE STRING,
PRODALLOCCHARCCATALOGPATH TYPE STRING,
PRODALLOCCHARCCTLGPATHISROOT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CCHARCCTLGTREE_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_CCHARCCTLGTREE_STR-MANDT sy-vline 
WA_CCHARCCTLGTREE_STR-PRODALLOCCHARCCTLGPATHUUID sy-vline 
WA_CCHARCCTLGTREE_STR-PRODALLOCCHARCCTLGPATHDESC sy-vline 
WA_CCHARCCTLGTREE_STR-PRODALLOCCHARCCTLGPATHINTID sy-vline 
WA_CCHARCCTLGTREE_STR-PRODALLOCCHARCCATALOGTYPE sy-vline 
WA_CCHARCCTLGTREE_STR-PRODALLOCCHARCCATALOGUSETYPE sy-vline 
WA_CCHARCCTLGTREE_STR-PRODALLOCCHARCCATALOGUUID sy-vline 
WA_CCHARCCTLGTREE_STR-PRODALLOCCHARCCTLGPARPATHINTID sy-vline 
WA_CCHARCCTLGTREE_STR-PRODALLOCCHARCCATALOGCHARCTYPE sy-vline 
WA_CCHARCCTLGTREE_STR-PRODALLOCCHARCCATALOGPATHTYPE sy-vline 
WA_CCHARCCTLGTREE_STR-PRODALLOCCHARCCTLGPATHSELNAME sy-vline 
WA_CCHARCCTLGTREE_STR-PRODALLOCCHARCCTLGPATHSEL sy-vline 
WA_CCHARCCTLGTREE_STR-PRODALLOCCHARCCATALOGPATH sy-vline 
WA_CCHARCCTLGTREE_STR-PRODALLOCCHARCCTLGPATHISROOT sy-vline      INTO ld_text SEPARATED BY SPACE.

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