ABAP Select data from SAP table CMP_ITEM_DATA_ALV_FC 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 CMP_ITEM_DATA_ALV_FC 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 CMP_ITEM_DATA_ALV_FC. 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 CMP_ITEM_DATA_ALV_FC 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_CMP_ITEM_DATA_ALV_FC TYPE STANDARD TABLE OF CMP_ITEM_DATA_ALV_FC,
      WA_CMP_ITEM_DATA_ALV_FC TYPE CMP_ITEM_DATA_ALV_FC,
      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: <CMP_ITEM_DATA_ALV_FC> TYPE CMP_ITEM_DATA_ALV_FC.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMP_ITEM_DATA_ALV_FC
*  INTO TABLE @DATA(IT_CMP_ITEM_DATA_ALV_FC2).
*--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_CMP_ITEM_DATA_ALV_FC INDEX 1 INTO DATA(WA_CMP_ITEM_DATA_ALV_FC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMP_ITEM_DATA_ALV_FC>-POSNR = 1.
<CMP_ITEM_DATA_ALV_FC>-MATNR = 1.
<CMP_ITEM_DATA_ALV_FC>-ARKTX = 1.
<CMP_ITEM_DATA_ALV_FC>-AUART = 1.
<CMP_ITEM_DATA_ALV_FC>-FKART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMP_ITEM_DATA_ALV_FC-LDOCNR, sy-vline,
  WA_CMP_ITEM_DATA_ALV_FC-ITEM_TYPE, sy-vline,
  WA_CMP_ITEM_DATA_ALV_FC-COMPREASTXT, sy-vline,
  WA_CMP_ITEM_DATA_ALV_FC-FKIMG, sy-vline,
  WA_CMP_ITEM_DATA_ALV_FC-VRKME, sy-vline,
  WA_CMP_ITEM_DATA_ALV_FC-NETWR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMP_ITEM_DATA_ALV_FC 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_CMP_ITEM_DATA_ALV_FC 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_CMP_ITEM_DATA_ALV_FC INTO WA_CMP_ITEM_DATA_ALV_FC.


*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 MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CMP_ITEM_DATA_ALV_FC-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMP_ITEM_DATA_ALV_FC-MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit CUNIT, internal->external for field CMP_KMEIN1
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CMP_ITEM_DATA_ALV_FC-CMP_KMEIN1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMP_ITEM_DATA_ALV_FC-CMP_KMEIN1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field CMP_KMEIN2
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CMP_ITEM_DATA_ALV_FC-CMP_KMEIN2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMP_ITEM_DATA_ALV_FC-CMP_KMEIN2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field CMP_KMEIN3
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CMP_ITEM_DATA_ALV_FC-CMP_KMEIN3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMP_ITEM_DATA_ALV_FC-CMP_KMEIN3.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field CMP_KMEIN4
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CMP_ITEM_DATA_ALV_FC-CMP_KMEIN4
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMP_ITEM_DATA_ALV_FC-CMP_KMEIN4.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field CMP_KMEIN5
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CMP_ITEM_DATA_ALV_FC-CMP_KMEIN5
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMP_ITEM_DATA_ALV_FC-CMP_KMEIN5.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field CMP_KMEIN6
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CMP_ITEM_DATA_ALV_FC-CMP_KMEIN6
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMP_ITEM_DATA_ALV_FC-CMP_KMEIN6.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMP_ITEM_DATA_ALV_FC-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMP_ITEM_DATA_ALV_FC-VBELN.
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_CMP_ITEM_DATA_ALV_FC_STR, 
POSNR TYPE STRING,
MATNR TYPE STRING,
ARKTX TYPE STRING,
AUART TYPE STRING,
FKART TYPE STRING,
LDOCNR TYPE STRING,
ITEM_TYPE TYPE STRING,
COMPREASTXT TYPE STRING,
FKIMG TYPE STRING,
VRKME TYPE STRING,
NETWR TYPE STRING,
CMP_PRICE1 TYPE STRING,
CMP_KWAEH1 TYPE STRING,
CMP_KPEIN1 TYPE STRING,
CMP_KMEIN1 TYPE STRING,
CMP_PRICE2 TYPE STRING,
CMP_KWAEH2 TYPE STRING,
CMP_KPEIN2 TYPE STRING,
CMP_KMEIN2 TYPE STRING,
CMP_PRICE3 TYPE STRING,
CMP_KWAEH3 TYPE STRING,
CMP_KPEIN3 TYPE STRING,
CMP_KMEIN3 TYPE STRING,
CMP_PRICE4 TYPE STRING,
CMP_KWAEH4 TYPE STRING,
CMP_KPEIN4 TYPE STRING,
CMP_KMEIN4 TYPE STRING,
CMP_PRICE5 TYPE STRING,
CMP_KWAEH5 TYPE STRING,
CMP_KPEIN5 TYPE STRING,
CMP_KMEIN5 TYPE STRING,
CMP_PRICE6 TYPE STRING,
CMP_KWAEH6 TYPE STRING,
CMP_KPEIN6 TYPE STRING,
CMP_KMEIN6 TYPE STRING,
DOCNR TYPE STRING,
VBELN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMP_ITEM_DATA_ALV_FC_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_CMP_ITEM_DATA_ALV_FC_STR-POSNR sy-vline 
WA_CMP_ITEM_DATA_ALV_FC_STR-MATNR sy-vline 
WA_CMP_ITEM_DATA_ALV_FC_STR-ARKTX sy-vline 
WA_CMP_ITEM_DATA_ALV_FC_STR-AUART sy-vline 
WA_CMP_ITEM_DATA_ALV_FC_STR-FKART sy-vline 
WA_CMP_ITEM_DATA_ALV_FC_STR-LDOCNR sy-vline 
WA_CMP_ITEM_DATA_ALV_FC_STR-ITEM_TYPE sy-vline 
WA_CMP_ITEM_DATA_ALV_FC_STR-COMPREASTXT sy-vline 
WA_CMP_ITEM_DATA_ALV_FC_STR-FKIMG sy-vline 
WA_CMP_ITEM_DATA_ALV_FC_STR-VRKME sy-vline 
WA_CMP_ITEM_DATA_ALV_FC_STR-NETWR sy-vline 
WA_CMP_ITEM_DATA_ALV_FC_STR-CMP_PRICE1 sy-vline 
WA_CMP_ITEM_DATA_ALV_FC_STR-CMP_KWAEH1 sy-vline 
WA_CMP_ITEM_DATA_ALV_FC_STR-CMP_KPEIN1 sy-vline 
WA_CMP_ITEM_DATA_ALV_FC_STR-CMP_KMEIN1 sy-vline 
WA_CMP_ITEM_DATA_ALV_FC_STR-CMP_PRICE2 sy-vline 
WA_CMP_ITEM_DATA_ALV_FC_STR-CMP_KWAEH2 sy-vline 
WA_CMP_ITEM_DATA_ALV_FC_STR-CMP_KPEIN2 sy-vline 
WA_CMP_ITEM_DATA_ALV_FC_STR-CMP_KMEIN2 sy-vline 
WA_CMP_ITEM_DATA_ALV_FC_STR-CMP_PRICE3 sy-vline 
WA_CMP_ITEM_DATA_ALV_FC_STR-CMP_KWAEH3 sy-vline 
WA_CMP_ITEM_DATA_ALV_FC_STR-CMP_KPEIN3 sy-vline 
WA_CMP_ITEM_DATA_ALV_FC_STR-CMP_KMEIN3 sy-vline 
WA_CMP_ITEM_DATA_ALV_FC_STR-CMP_PRICE4 sy-vline 
WA_CMP_ITEM_DATA_ALV_FC_STR-CMP_KWAEH4 sy-vline 
WA_CMP_ITEM_DATA_ALV_FC_STR-CMP_KPEIN4 sy-vline 
WA_CMP_ITEM_DATA_ALV_FC_STR-CMP_KMEIN4 sy-vline 
WA_CMP_ITEM_DATA_ALV_FC_STR-CMP_PRICE5 sy-vline 
WA_CMP_ITEM_DATA_ALV_FC_STR-CMP_KWAEH5 sy-vline 
WA_CMP_ITEM_DATA_ALV_FC_STR-CMP_KPEIN5 sy-vline 
WA_CMP_ITEM_DATA_ALV_FC_STR-CMP_KMEIN5 sy-vline 
WA_CMP_ITEM_DATA_ALV_FC_STR-CMP_PRICE6 sy-vline 
WA_CMP_ITEM_DATA_ALV_FC_STR-CMP_KWAEH6 sy-vline 
WA_CMP_ITEM_DATA_ALV_FC_STR-CMP_KPEIN6 sy-vline 
WA_CMP_ITEM_DATA_ALV_FC_STR-CMP_KMEIN6 sy-vline 
WA_CMP_ITEM_DATA_ALV_FC_STR-DOCNR sy-vline 
WA_CMP_ITEM_DATA_ALV_FC_STR-VBELN sy-vline      INTO ld_text SEPARATED BY SPACE.

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