ABAP Select data from SAP table CPPDG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CPPDG
*  INTO TABLE @DATA(IT_CPPDG2).
*--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_CPPDG INDEX 1 INTO DATA(WA_CPPDG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CPPDG>-MANDT = 1.
<CPPDG>-CHMLCMPLNCINFOUUID = 1.
<CPPDG>-SITNINSTCEANCHOROBJECTKEY = 1.
<CPPDG>-PRODUCT = 1.
<CPPDG>-RAWMATERIAL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CPPDG-PRODUCTGROUP, sy-vline,
  WA_CPPDG-DESCRIPTIONOFDNGRSGDSPCKG, sy-vline,
  WA_CPPDG-DESCOFDNGRSGDSPCKGNAME, sy-vline,
  WA_CPPDG-DANGEROUSGOODSPACKAGINGCODE, sy-vline,
  WA_CPPDG-DANGEROUSGOODSENCLOSUREQTY, sy-vline,
  WA_CPPDG-DANGEROUSGOODSENCLOSUREUNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CPPDG 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_CPPDG 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_CPPDG INTO WA_CPPDG.


*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 MATN1, internal->external for field PRODUCT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CPPDG-PRODUCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CPPDG-PRODUCT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field RAWMATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CPPDG-RAWMATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CPPDG-RAWMATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field DANGEROUSGOODSENCLOSUREUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CPPDG-DANGEROUSGOODSENCLOSUREUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CPPDG-DANGEROUSGOODSENCLOSUREUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field DNGRSGDSENCLRINNERPACKAGEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CPPDG-DNGRSGDSENCLRINNERPACKAGEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CPPDG-DNGRSGDSENCLRINNERPACKAGEUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field DANGEROUSGOODSCONTROLTEMPUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CPPDG-DANGEROUSGOODSCONTROLTEMPUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CPPDG-DANGEROUSGOODSCONTROLTEMPUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field DANGEROUSGOODSEMGYTEMPUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CPPDG-DANGEROUSGOODSEMGYTEMPUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CPPDG-DANGEROUSGOODSEMGYTEMPUNIT.
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_CPPDG_STR, 
MANDT TYPE STRING,
CHMLCMPLNCINFOUUID TYPE STRING,
SITNINSTCEANCHOROBJECTKEY TYPE STRING,
PRODUCT TYPE STRING,
RAWMATERIAL TYPE STRING,
PRODUCTGROUP TYPE STRING,
DESCRIPTIONOFDNGRSGDSPCKG TYPE STRING,
DESCOFDNGRSGDSPCKGNAME TYPE STRING,
DANGEROUSGOODSPACKAGINGCODE TYPE STRING,
DANGEROUSGOODSENCLOSUREQTY TYPE STRING,
DANGEROUSGOODSENCLOSUREUNIT TYPE STRING,
DNGRSGDSENCLRNMBROFINNERPCKGS TYPE STRING,
DESCOFDNGRSGDSINNERPACKGG TYPE STRING,
DESCOFDNGRSGDSINNERPACKGGNAME TYPE STRING,
DNGRSGDSENCLRINNERPACKAGEQTY TYPE STRING,
DNGRSGDSENCLRINNERPACKAGEUNIT TYPE STRING,
DANGEROUSGOODSCONTROLTEMP TYPE STRING,
DANGEROUSGOODSCONTROLTEMPUNIT TYPE STRING,
DANGEROUSGOODSEMERGENCYTEMP TYPE STRING,
DANGEROUSGOODSEMGYTEMPUNIT TYPE STRING,
CHMLCMPLNCINFOCOMBINEDNAME TYPE STRING,
CHMLCMPLNCINTERNALNAME TYPE STRING,
PRODUCTNAME TYPE STRING,
CHMLCMPLNCPRODUUID TYPE STRING,
CHMLCMPLNCINFONAVGNLINK TYPE STRING,
ANALYTICCMPSTNNAVGNLINKUUID TYPE STRING,
MATLBSDCMPSTNNAVGNLINKUUID TYPE STRING,
PCPHYSPRPTYNAVGNLINKUUID TYPE STRING,
CHMLCMPLNCINFOUNPCKGDPRODNAME TYPE STRING,
CHMLCMPLNCINFORAWMATERIALNAME TYPE STRING,
DNGRSGDSRESPUNIT TYPE STRING,
CHMLCMPLNCINFOTYPE TYPE STRING,
CHMLCMPLNCPRODISRESEARCHED TYPE STRING,
MATERIALISSOLD TYPE STRING,
MATERIALISTRANSPORTED TYPE STRING,
MATERIALISSOURCED TYPE STRING,
MATERIALISPRODUCED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CPPDG_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_CPPDG_STR-MANDT sy-vline 
WA_CPPDG_STR-CHMLCMPLNCINFOUUID sy-vline 
WA_CPPDG_STR-SITNINSTCEANCHOROBJECTKEY sy-vline 
WA_CPPDG_STR-PRODUCT sy-vline 
WA_CPPDG_STR-RAWMATERIAL sy-vline 
WA_CPPDG_STR-PRODUCTGROUP sy-vline 
WA_CPPDG_STR-DESCRIPTIONOFDNGRSGDSPCKG sy-vline 
WA_CPPDG_STR-DESCOFDNGRSGDSPCKGNAME sy-vline 
WA_CPPDG_STR-DANGEROUSGOODSPACKAGINGCODE sy-vline 
WA_CPPDG_STR-DANGEROUSGOODSENCLOSUREQTY sy-vline 
WA_CPPDG_STR-DANGEROUSGOODSENCLOSUREUNIT sy-vline 
WA_CPPDG_STR-DNGRSGDSENCLRNMBROFINNERPCKGS sy-vline 
WA_CPPDG_STR-DESCOFDNGRSGDSINNERPACKGG sy-vline 
WA_CPPDG_STR-DESCOFDNGRSGDSINNERPACKGGNAME sy-vline 
WA_CPPDG_STR-DNGRSGDSENCLRINNERPACKAGEQTY sy-vline 
WA_CPPDG_STR-DNGRSGDSENCLRINNERPACKAGEUNIT sy-vline 
WA_CPPDG_STR-DANGEROUSGOODSCONTROLTEMP sy-vline 
WA_CPPDG_STR-DANGEROUSGOODSCONTROLTEMPUNIT sy-vline 
WA_CPPDG_STR-DANGEROUSGOODSEMERGENCYTEMP sy-vline 
WA_CPPDG_STR-DANGEROUSGOODSEMGYTEMPUNIT sy-vline 
WA_CPPDG_STR-CHMLCMPLNCINFOCOMBINEDNAME sy-vline 
WA_CPPDG_STR-CHMLCMPLNCINTERNALNAME sy-vline 
WA_CPPDG_STR-PRODUCTNAME sy-vline 
WA_CPPDG_STR-CHMLCMPLNCPRODUUID sy-vline 
WA_CPPDG_STR-CHMLCMPLNCINFONAVGNLINK sy-vline 
WA_CPPDG_STR-ANALYTICCMPSTNNAVGNLINKUUID sy-vline 
WA_CPPDG_STR-MATLBSDCMPSTNNAVGNLINKUUID sy-vline 
WA_CPPDG_STR-PCPHYSPRPTYNAVGNLINKUUID sy-vline 
WA_CPPDG_STR-CHMLCMPLNCINFOUNPCKGDPRODNAME sy-vline 
WA_CPPDG_STR-CHMLCMPLNCINFORAWMATERIALNAME sy-vline 
WA_CPPDG_STR-DNGRSGDSRESPUNIT sy-vline 
WA_CPPDG_STR-CHMLCMPLNCINFOTYPE sy-vline 
WA_CPPDG_STR-CHMLCMPLNCPRODISRESEARCHED sy-vline 
WA_CPPDG_STR-MATERIALISSOLD sy-vline 
WA_CPPDG_STR-MATERIALISTRANSPORTED sy-vline 
WA_CPPDG_STR-MATERIALISSOURCED sy-vline 
WA_CPPDG_STR-MATERIALISPRODUCED sy-vline      INTO ld_text SEPARATED BY SPACE.

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