ABAP Select data from SAP table COMPOPER into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP COMPOPER 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 COMPOPER. 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 COMPOPER 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_COMPOPER TYPE STANDARD TABLE OF COMPOPER,
      WA_COMPOPER TYPE COMPOPER,
      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: <COMPOPER> TYPE COMPOPER.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM COMPOPER
*  INTO TABLE @DATA(IT_COMPOPER2).
*--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_COMPOPER INDEX 1 INTO DATA(WA_COMPOPER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<COMPOPER>-LEAD_AUFNR = 1.
<COMPOPER>-VSNMR = 1.
<COMPOPER>-AUFPL = 1.
<COMPOPER>-APLZL = 1.
<COMPOPER>-SUMNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_COMPOPER-APLFL, sy-vline,
  WA_COMPOPER-ARBID, sy-vline,
  WA_COMPOPER-WERKS, sy-vline,
  WA_COMPOPER-VORNR, sy-vline,
  WA_COMPOPER-RELMNG, sy-vline,
  WA_COMPOPER-MGVRG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_COMPOPER 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_COMPOPER 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_COMPOPER INTO WA_COMPOPER.


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

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

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

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

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

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

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

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

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

*Conversion exit CUNIT, internal->external for field VGE01
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_COMPOPER-VGE01
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COMPOPER-VGE01.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VGE02
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_COMPOPER-VGE02
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COMPOPER-VGE02.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VGE03
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_COMPOPER-VGE03
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COMPOPER-VGE03.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VGE04
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_COMPOPER-VGE04
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COMPOPER-VGE04.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VGE05
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_COMPOPER-VGE05
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COMPOPER-VGE05.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VGE06
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_COMPOPER-VGE06
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COMPOPER-VGE06.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field TXTSP
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_COMPOPER-TXTSP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COMPOPER-TXTSP.
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_COMPOPER_STR, 
LEAD_AUFNR TYPE STRING,
VSNMR TYPE STRING,
AUFPL TYPE STRING,
APLZL TYPE STRING,
SUMNR TYPE STRING,
APLFL TYPE STRING,
ARBID TYPE STRING,
WERKS TYPE STRING,
VORNR TYPE STRING,
RELMNG TYPE STRING,
MGVRG TYPE STRING,
MEINH TYPE STRING,
ASVRG TYPE STRING,
PLNTY TYPE STRING,
PLNNR TYPE STRING,
PLNAL TYPE STRING,
PLNKN TYPE STRING,
VPLTY TYPE STRING,
VPLNR TYPE STRING,
VPLAL TYPE STRING,
STDKN TYPE STRING,
STEUS TYPE STRING,
LTXA1 TYPE STRING,
LTXA2 TYPE STRING,
SPLIM TYPE STRING,
SAKTO TYPE STRING,
KZLGF TYPE STRING,
KZWRTF TYPE STRING,
VGE01 TYPE STRING,
VGW01 TYPE STRING,
VGE02 TYPE STRING,
VGW02 TYPE STRING,
VGE03 TYPE STRING,
VGW03 TYPE STRING,
VGE04 TYPE STRING,
VGW04 TYPE STRING,
VGE05 TYPE STRING,
VGW05 TYPE STRING,
VGE06 TYPE STRING,
VGW06 TYPE STRING,
LAR01 TYPE STRING,
LAR02 TYPE STRING,
LAR03 TYPE STRING,
LAR04 TYPE STRING,
LAR05 TYPE STRING,
LAR06 TYPE STRING,
LOEKZ TYPE STRING,
OBJTYPE TYPE STRING,
XFIELD TYPE STRING,
TXTSP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_COMPOPER_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_COMPOPER_STR-LEAD_AUFNR sy-vline 
WA_COMPOPER_STR-VSNMR sy-vline 
WA_COMPOPER_STR-AUFPL sy-vline 
WA_COMPOPER_STR-APLZL sy-vline 
WA_COMPOPER_STR-SUMNR sy-vline 
WA_COMPOPER_STR-APLFL sy-vline 
WA_COMPOPER_STR-ARBID sy-vline 
WA_COMPOPER_STR-WERKS sy-vline 
WA_COMPOPER_STR-VORNR sy-vline 
WA_COMPOPER_STR-RELMNG sy-vline 
WA_COMPOPER_STR-MGVRG sy-vline 
WA_COMPOPER_STR-MEINH sy-vline 
WA_COMPOPER_STR-ASVRG sy-vline 
WA_COMPOPER_STR-PLNTY sy-vline 
WA_COMPOPER_STR-PLNNR sy-vline 
WA_COMPOPER_STR-PLNAL sy-vline 
WA_COMPOPER_STR-PLNKN sy-vline 
WA_COMPOPER_STR-VPLTY sy-vline 
WA_COMPOPER_STR-VPLNR sy-vline 
WA_COMPOPER_STR-VPLAL sy-vline 
WA_COMPOPER_STR-STDKN sy-vline 
WA_COMPOPER_STR-STEUS sy-vline 
WA_COMPOPER_STR-LTXA1 sy-vline 
WA_COMPOPER_STR-LTXA2 sy-vline 
WA_COMPOPER_STR-SPLIM sy-vline 
WA_COMPOPER_STR-SAKTO sy-vline 
WA_COMPOPER_STR-KZLGF sy-vline 
WA_COMPOPER_STR-KZWRTF sy-vline 
WA_COMPOPER_STR-VGE01 sy-vline 
WA_COMPOPER_STR-VGW01 sy-vline 
WA_COMPOPER_STR-VGE02 sy-vline 
WA_COMPOPER_STR-VGW02 sy-vline 
WA_COMPOPER_STR-VGE03 sy-vline 
WA_COMPOPER_STR-VGW03 sy-vline 
WA_COMPOPER_STR-VGE04 sy-vline 
WA_COMPOPER_STR-VGW04 sy-vline 
WA_COMPOPER_STR-VGE05 sy-vline 
WA_COMPOPER_STR-VGW05 sy-vline 
WA_COMPOPER_STR-VGE06 sy-vline 
WA_COMPOPER_STR-VGW06 sy-vline 
WA_COMPOPER_STR-LAR01 sy-vline 
WA_COMPOPER_STR-LAR02 sy-vline 
WA_COMPOPER_STR-LAR03 sy-vline 
WA_COMPOPER_STR-LAR04 sy-vline 
WA_COMPOPER_STR-LAR05 sy-vline 
WA_COMPOPER_STR-LAR06 sy-vline 
WA_COMPOPER_STR-LOEKZ sy-vline 
WA_COMPOPER_STR-OBJTYPE sy-vline 
WA_COMPOPER_STR-XFIELD sy-vline 
WA_COMPOPER_STR-TXTSP sy-vline      INTO ld_text SEPARATED BY SPACE.

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