ABAP Select data from SAP table MILL_CDCOM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MILL_CDCOM
*  INTO TABLE @DATA(IT_MILL_CDCOM2).
*--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_MILL_CDCOM INDEX 1 INTO DATA(WA_MILL_CDCOM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MILL_CDCOM>-MATNR = 1.
<MILL_CDCOM>-WERKS = 1.
<MILL_CDCOM>-CHARG = 1.
<MILL_CDCOM>-LGORT = 1.
<MILL_CDCOM>-SOBKZ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MILL_CDCOM-SOTXT, sy-vline,
  WA_MILL_CDCOM-VBELN, sy-vline,
  WA_MILL_CDCOM-POSNR, sy-vline,
  WA_MILL_CDCOM-PSPNR, sy-vline,
  WA_MILL_CDCOM-KUNNR, sy-vline,
  WA_MILL_CDCOM-BWTAR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MILL_CDCOM 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_MILL_CDCOM 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_MILL_CDCOM INTO WA_MILL_CDCOM.


*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_MILL_CDCOM-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MILL_CDCOM-MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit CUNIT, internal->external for field ERFME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MILL_CDCOM-ERFME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MILL_CDCOM-ERFME.
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_MILL_CDCOM_STR, 
MATNR TYPE STRING,
WERKS TYPE STRING,
CHARG TYPE STRING,
LGORT TYPE STRING,
SOBKZ TYPE STRING,
SOTXT TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
PSPNR TYPE STRING,
KUNNR TYPE STRING,
BWTAR TYPE STRING,
SHKZG TYPE STRING,
BWART TYPE STRING,
BTEXT TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
ERFMG TYPE STRING,
ERFME TYPE STRING,
UMREZ TYPE STRING,
UMREN TYPE STRING,
UMWRK TYPE STRING,
UMLGO TYPE STRING,
EPRIO TYPE STRING,
RULES TYPE STRING,
MBDAT TYPE STRING,
LBBSA TYPE STRING,
INSMK TYPE STRING,
CHMDG TYPE STRING,
MAKTX TYPE STRING,
KZWSO TYPE STRING,
XCHPF TYPE STRING,
BWTTY TYPE STRING,
KAPPL TYPE STRING,
SHKZG_MIGO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MILL_CDCOM_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_MILL_CDCOM_STR-MATNR sy-vline 
WA_MILL_CDCOM_STR-WERKS sy-vline 
WA_MILL_CDCOM_STR-CHARG sy-vline 
WA_MILL_CDCOM_STR-LGORT sy-vline 
WA_MILL_CDCOM_STR-SOBKZ sy-vline 
WA_MILL_CDCOM_STR-SOTXT sy-vline 
WA_MILL_CDCOM_STR-VBELN sy-vline 
WA_MILL_CDCOM_STR-POSNR sy-vline 
WA_MILL_CDCOM_STR-PSPNR sy-vline 
WA_MILL_CDCOM_STR-KUNNR sy-vline 
WA_MILL_CDCOM_STR-BWTAR sy-vline 
WA_MILL_CDCOM_STR-SHKZG sy-vline 
WA_MILL_CDCOM_STR-BWART sy-vline 
WA_MILL_CDCOM_STR-BTEXT sy-vline 
WA_MILL_CDCOM_STR-MENGE sy-vline 
WA_MILL_CDCOM_STR-MEINS sy-vline 
WA_MILL_CDCOM_STR-ERFMG sy-vline 
WA_MILL_CDCOM_STR-ERFME sy-vline 
WA_MILL_CDCOM_STR-UMREZ sy-vline 
WA_MILL_CDCOM_STR-UMREN sy-vline 
WA_MILL_CDCOM_STR-UMWRK sy-vline 
WA_MILL_CDCOM_STR-UMLGO sy-vline 
WA_MILL_CDCOM_STR-EPRIO sy-vline 
WA_MILL_CDCOM_STR-RULES sy-vline 
WA_MILL_CDCOM_STR-MBDAT sy-vline 
WA_MILL_CDCOM_STR-LBBSA sy-vline 
WA_MILL_CDCOM_STR-INSMK sy-vline 
WA_MILL_CDCOM_STR-CHMDG sy-vline 
WA_MILL_CDCOM_STR-MAKTX sy-vline 
WA_MILL_CDCOM_STR-KZWSO sy-vline 
WA_MILL_CDCOM_STR-XCHPF sy-vline 
WA_MILL_CDCOM_STR-BWTTY sy-vline 
WA_MILL_CDCOM_STR-KAPPL sy-vline 
WA_MILL_CDCOM_STR-SHKZG_MIGO sy-vline      INTO ld_text SEPARATED BY SPACE.

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