ABAP Select data from SAP table CCDOKUSTRU into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CCDOKUSTRU
*  INTO TABLE @DATA(IT_CCDOKUSTRU2).
*--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_CCDOKUSTRU INDEX 1 INTO DATA(WA_CCDOKUSTRU2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CCDOKUSTRU>-XFELD = 1.
<CCDOKUSTRU>-CC00000001 = 1.
<CCDOKUSTRU>-CC00000002 = 1.
<CCDOKUSTRU>-CC00000003 = 1.
<CCDOKUSTRU>-CC00000004 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CCDOKUSTRU-CC00000005, sy-vline,
  WA_CCDOKUSTRU-CC00000006, sy-vline,
  WA_CCDOKUSTRU-CC00000007, sy-vline,
  WA_CCDOKUSTRU-DKENZ, sy-vline,
  WA_CCDOKUSTRU-CSVWV, sy-vline,
  WA_CCDOKUSTRU-CS_KZALT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CCDOKUSTRU 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_CCDOKUSTRU 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_CCDOKUSTRU INTO WA_CCDOKUSTRU.


*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_CCDOKUSTRU_STR, 
XFELD TYPE STRING,
CC00000001 TYPE STRING,
CC00000002 TYPE STRING,
CC00000003 TYPE STRING,
CC00000004 TYPE STRING,
CC00000005 TYPE STRING,
CC00000006 TYPE STRING,
CC00000007 TYPE STRING,
DKENZ TYPE STRING,
CSVWV TYPE STRING,
CS_KZALT TYPE STRING,
CS_KZWZV TYPE STRING,
HKENZ TYPE STRING,
MKENZ TYPE STRING,
OHFR TYPE STRING,
MIFR TYPE STRING,
PAKT TYPE STRING,
EINH TYPE STRING,
INCL_PAK TYPE STRING,
GET_PAK TYPE STRING,
GET_OBJ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CCDOKUSTRU_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_CCDOKUSTRU_STR-XFELD sy-vline 
WA_CCDOKUSTRU_STR-CC00000001 sy-vline 
WA_CCDOKUSTRU_STR-CC00000002 sy-vline 
WA_CCDOKUSTRU_STR-CC00000003 sy-vline 
WA_CCDOKUSTRU_STR-CC00000004 sy-vline 
WA_CCDOKUSTRU_STR-CC00000005 sy-vline 
WA_CCDOKUSTRU_STR-CC00000006 sy-vline 
WA_CCDOKUSTRU_STR-CC00000007 sy-vline 
WA_CCDOKUSTRU_STR-DKENZ sy-vline 
WA_CCDOKUSTRU_STR-CSVWV sy-vline 
WA_CCDOKUSTRU_STR-CS_KZALT sy-vline 
WA_CCDOKUSTRU_STR-CS_KZWZV sy-vline 
WA_CCDOKUSTRU_STR-HKENZ sy-vline 
WA_CCDOKUSTRU_STR-MKENZ sy-vline 
WA_CCDOKUSTRU_STR-OHFR sy-vline 
WA_CCDOKUSTRU_STR-MIFR sy-vline 
WA_CCDOKUSTRU_STR-PAKT sy-vline 
WA_CCDOKUSTRU_STR-EINH sy-vline 
WA_CCDOKUSTRU_STR-INCL_PAK sy-vline 
WA_CCDOKUSTRU_STR-GET_PAK sy-vline 
WA_CCDOKUSTRU_STR-GET_OBJ sy-vline      INTO ld_text SEPARATED BY SPACE.

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