ABAP Select data from SAP table CCM_BOMITEM_SCR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CCM_BOMITEM_SCR
*  INTO TABLE @DATA(IT_CCM_BOMITEM_SCR2).
*--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_CCM_BOMITEM_SCR INDEX 1 INTO DATA(WA_CCM_BOMITEM_SCR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CCM_BOMITEM_SCR>-EQUNR = 1.
<CCM_BOMITEM_SCR>-STLTY = 1.
<CCM_BOMITEM_SCR>-STLNR = 1.
<CCM_BOMITEM_SCR>-STLKN = 1.
<CCM_BOMITEM_SCR>-POSNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CCM_BOMITEM_SCR-MEINS, sy-vline,
  WA_CCM_BOMITEM_SCR-MENGE, sy-vline,
  WA_CCM_BOMITEM_SCR-IDNRK, sy-vline,
  WA_CCM_BOMITEM_SCR-POSTP, sy-vline,
  WA_CCM_BOMITEM_SCR-FUNCID, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_CCM_BOMITEM_SCR 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_CCM_BOMITEM_SCR 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_CCM_BOMITEM_SCR INTO WA_CCM_BOMITEM_SCR.


*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 EQUNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CCM_BOMITEM_SCR-EQUNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CCM_BOMITEM_SCR-EQUNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit MATN1, internal->external for field IDNRK
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CCM_BOMITEM_SCR-IDNRK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CCM_BOMITEM_SCR-IDNRK.
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_CCM_BOMITEM_SCR_STR, 
EQUNR TYPE STRING,
STLTY TYPE STRING,
STLNR TYPE STRING,
STLKN TYPE STRING,
POSNR TYPE STRING,
MEINS TYPE STRING,
MENGE TYPE STRING,
IDNRK TYPE STRING,
POSTP TYPE STRING,
FUNCID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CCM_BOMITEM_SCR_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_CCM_BOMITEM_SCR_STR-EQUNR sy-vline 
WA_CCM_BOMITEM_SCR_STR-STLTY sy-vline 
WA_CCM_BOMITEM_SCR_STR-STLNR sy-vline 
WA_CCM_BOMITEM_SCR_STR-STLKN sy-vline 
WA_CCM_BOMITEM_SCR_STR-POSNR sy-vline 
WA_CCM_BOMITEM_SCR_STR-MEINS sy-vline 
WA_CCM_BOMITEM_SCR_STR-MENGE sy-vline 
WA_CCM_BOMITEM_SCR_STR-IDNRK sy-vline 
WA_CCM_BOMITEM_SCR_STR-POSTP sy-vline 
WA_CCM_BOMITEM_SCR_STR-FUNCID sy-vline      INTO ld_text SEPARATED BY SPACE.

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