ABAP Select data from SAP table CGDDPA 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 CGDDPA 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 CGDDPA. 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 CGDDPA 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_CGDDPA TYPE STANDARD TABLE OF CGDDPA,
      WA_CGDDPA TYPE CGDDPA,
      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: <CGDDPA> TYPE CGDDPA.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CGDDPA
*  INTO TABLE @DATA(IT_CGDDPA2).
*--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_CGDDPA INDEX 1 INTO DATA(WA_CGDDPA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CGDDPA>-ASPET = 1.
<CGDDPA>-DIFCA = 1.
<CGDDPA>-NEWDI = 1.
<CGDDPA>-ADTEL = 1.
<CGDDPA>-ADOMA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CGDDPA-ATABF, sy-vline,
  WA_CGDDPA-MARK1, sy-vline,
  WA_CGDDPA-FCAFI1, sy-vline,
  WA_CGDDPA-FTXTM1, sy-vline,
  WA_CGDDPA-MARK2, sy-vline,
  WA_CGDDPA-FCAFI2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CGDDPA 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_CGDDPA 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_CGDDPA INTO WA_CGDDPA.


*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_CGDDPA_STR, 
ASPET TYPE STRING,
DIFCA TYPE STRING,
NEWDI TYPE STRING,
ADTEL TYPE STRING,
ADOMA TYPE STRING,
ATABF TYPE STRING,
MARK1 TYPE STRING,
FCAFI1 TYPE STRING,
FTXTM1 TYPE STRING,
MARK2 TYPE STRING,
FCAFI2 TYPE STRING,
FTXTM2 TYPE STRING,
MARK3 TYPE STRING,
FCAFI3 TYPE STRING,
FTXTM3 TYPE STRING,
FIENM TYPE STRING,
TXT_M TYPE STRING,
ROLNM TYPE STRING,
DOMNM TYPE STRING,
RFTAB TYPE STRING,
MARK4 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CGDDPA_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_CGDDPA_STR-ASPET sy-vline 
WA_CGDDPA_STR-DIFCA sy-vline 
WA_CGDDPA_STR-NEWDI sy-vline 
WA_CGDDPA_STR-ADTEL sy-vline 
WA_CGDDPA_STR-ADOMA sy-vline 
WA_CGDDPA_STR-ATABF sy-vline 
WA_CGDDPA_STR-MARK1 sy-vline 
WA_CGDDPA_STR-FCAFI1 sy-vline 
WA_CGDDPA_STR-FTXTM1 sy-vline 
WA_CGDDPA_STR-MARK2 sy-vline 
WA_CGDDPA_STR-FCAFI2 sy-vline 
WA_CGDDPA_STR-FTXTM2 sy-vline 
WA_CGDDPA_STR-MARK3 sy-vline 
WA_CGDDPA_STR-FCAFI3 sy-vline 
WA_CGDDPA_STR-FTXTM3 sy-vline 
WA_CGDDPA_STR-FIENM sy-vline 
WA_CGDDPA_STR-TXT_M sy-vline 
WA_CGDDPA_STR-ROLNM sy-vline 
WA_CGDDPA_STR-DOMNM sy-vline 
WA_CGDDPA_STR-RFTAB sy-vline 
WA_CGDDPA_STR-MARK4 sy-vline      INTO ld_text SEPARATED BY SPACE.

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