ABAP Select data from SAP table CNPB_OBJECT_KEYS_IMP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CNPB_OBJECT_KEYS_IMP
*  INTO TABLE @DATA(IT_CNPB_OBJECT_KEYS_IMP2).
*--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_CNPB_OBJECT_KEYS_IMP INDEX 1 INTO DATA(WA_CNPB_OBJECT_KEYS_IMP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CNPB_OBJECT_KEYS_IMP>-PRONR = 1.
<CNPB_OBJECT_KEYS_IMP>-PSPNR = 1.
<CNPB_OBJECT_KEYS_IMP>-AUFNR = 1.
<CNPB_OBJECT_KEYS_IMP>-AUFPL = 1.
<CNPB_OBJECT_KEYS_IMP>-APLZL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CNPB_OBJECT_KEYS_IMP-VORNR, sy-vline,
  WA_CNPB_OBJECT_KEYS_IMP-RSNUM, sy-vline,
  WA_CNPB_OBJECT_KEYS_IMP-RSPOS, sy-vline,
  WA_CNPB_OBJECT_KEYS_IMP-RSART, sy-vline,
  WA_CNPB_OBJECT_KEYS_IMP-MLST_ZAEHL, sy-vline,
  WA_CNPB_OBJECT_KEYS_IMP-ZAEHL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CNPB_OBJECT_KEYS_IMP 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_CNPB_OBJECT_KEYS_IMP 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_CNPB_OBJECT_KEYS_IMP INTO WA_CNPB_OBJECT_KEYS_IMP.


*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 KONPD, internal->external for field PRONR
CALL FUNCTION 'CONVERSION_EXIT_KONPD_OUTPUT'
  EXPORTING
    input =                      WA_CNPB_OBJECT_KEYS_IMP-PRONR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNPB_OBJECT_KEYS_IMP-PRONR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PSPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_CNPB_OBJECT_KEYS_IMP-PSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNPB_OBJECT_KEYS_IMP-PSPNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNPB_OBJECT_KEYS_IMP-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNPB_OBJECT_KEYS_IMP-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_CNPB_OBJECT_KEYS_IMP-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNPB_OBJECT_KEYS_IMP-VORNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PRPSPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_CNPB_OBJECT_KEYS_IMP-PRPSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNPB_OBJECT_KEYS_IMP-PRPSPNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AOBAR, internal->external for field AOBAR
CALL FUNCTION 'CONVERSION_EXIT_AOBAR_OUTPUT'
  EXPORTING
    input =                      WA_CNPB_OBJECT_KEYS_IMP-AOBAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNPB_OBJECT_KEYS_IMP-AOBAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PLNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNPB_OBJECT_KEYS_IMP-PLNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNPB_OBJECT_KEYS_IMP-PLNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DOKNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNPB_OBJECT_KEYS_IMP-DOKNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNPB_OBJECT_KEYS_IMP-DOKNR.
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_CNPB_OBJECT_KEYS_IMP_STR, 
PRONR TYPE STRING,
PSPNR TYPE STRING,
AUFNR TYPE STRING,
AUFPL TYPE STRING,
APLZL TYPE STRING,
VORNR TYPE STRING,
RSNUM TYPE STRING,
RSPOS TYPE STRING,
RSART TYPE STRING,
MLST_ZAEHL TYPE STRING,
ZAEHL TYPE STRING,
PZLFH TYPE STRING,
NPAUFPL TYPE STRING,
NPAPLZL TYPE STRING,
NPTXTKY TYPE STRING,
PROBTYP TYPE STRING,
PRPSPNR TYPE STRING,
PRTXTKY TYPE STRING,
AUFPL_VOR TYPE STRING,
APLZL_VOR TYPE STRING,
AUFPL_NCH TYPE STRING,
APLZL_NCH TYPE STRING,
AOBAR TYPE STRING,
MIMAX TYPE STRING,
PLNUM TYPE STRING,
DOKAR TYPE STRING,
DOKNR TYPE STRING,
DOKVR TYPE STRING,
DOKTL TYPE STRING,
APPNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CNPB_OBJECT_KEYS_IMP_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_CNPB_OBJECT_KEYS_IMP_STR-PRONR sy-vline 
WA_CNPB_OBJECT_KEYS_IMP_STR-PSPNR sy-vline 
WA_CNPB_OBJECT_KEYS_IMP_STR-AUFNR sy-vline 
WA_CNPB_OBJECT_KEYS_IMP_STR-AUFPL sy-vline 
WA_CNPB_OBJECT_KEYS_IMP_STR-APLZL sy-vline 
WA_CNPB_OBJECT_KEYS_IMP_STR-VORNR sy-vline 
WA_CNPB_OBJECT_KEYS_IMP_STR-RSNUM sy-vline 
WA_CNPB_OBJECT_KEYS_IMP_STR-RSPOS sy-vline 
WA_CNPB_OBJECT_KEYS_IMP_STR-RSART sy-vline 
WA_CNPB_OBJECT_KEYS_IMP_STR-MLST_ZAEHL sy-vline 
WA_CNPB_OBJECT_KEYS_IMP_STR-ZAEHL sy-vline 
WA_CNPB_OBJECT_KEYS_IMP_STR-PZLFH sy-vline 
WA_CNPB_OBJECT_KEYS_IMP_STR-NPAUFPL sy-vline 
WA_CNPB_OBJECT_KEYS_IMP_STR-NPAPLZL sy-vline 
WA_CNPB_OBJECT_KEYS_IMP_STR-NPTXTKY sy-vline 
WA_CNPB_OBJECT_KEYS_IMP_STR-PROBTYP sy-vline 
WA_CNPB_OBJECT_KEYS_IMP_STR-PRPSPNR sy-vline 
WA_CNPB_OBJECT_KEYS_IMP_STR-PRTXTKY sy-vline 
WA_CNPB_OBJECT_KEYS_IMP_STR-AUFPL_VOR sy-vline 
WA_CNPB_OBJECT_KEYS_IMP_STR-APLZL_VOR sy-vline 
WA_CNPB_OBJECT_KEYS_IMP_STR-AUFPL_NCH sy-vline 
WA_CNPB_OBJECT_KEYS_IMP_STR-APLZL_NCH sy-vline 
WA_CNPB_OBJECT_KEYS_IMP_STR-AOBAR sy-vline 
WA_CNPB_OBJECT_KEYS_IMP_STR-MIMAX sy-vline 
WA_CNPB_OBJECT_KEYS_IMP_STR-PLNUM sy-vline 
WA_CNPB_OBJECT_KEYS_IMP_STR-DOKAR sy-vline 
WA_CNPB_OBJECT_KEYS_IMP_STR-DOKNR sy-vline 
WA_CNPB_OBJECT_KEYS_IMP_STR-DOKVR sy-vline 
WA_CNPB_OBJECT_KEYS_IMP_STR-DOKTL sy-vline 
WA_CNPB_OBJECT_KEYS_IMP_STR-APPNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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