ABAP Select data from SAP table MMSRV_VENDER_COMP_STY into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMSRV_VENDER_COMP_STY
*  INTO TABLE @DATA(IT_MMSRV_VENDER_COMP_STY2).
*--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_MMSRV_VENDER_COMP_STY INDEX 1 INTO DATA(WA_MMSRV_VENDER_COMP_STY2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMSRV_VENDER_COMP_STY>-EKORG = 1.
<MMSRV_VENDER_COMP_STY>-LIFNR = 1.
<MMSRV_VENDER_COMP_STY>-HKRIT = 1.
<MMSRV_VENDER_COMP_STY>-BEURT = 1.
<MMSRV_VENDER_COMP_STY>-LEBEW = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMSRV_VENDER_COMP_STY-LEBDT, sy-vline,
  WA_MMSRV_VENDER_COMP_STY-TXTSL, sy-vline,
  WA_MMSRV_VENDER_COMP_STY-KRT01, sy-vline,
  WA_MMSRV_VENDER_COMP_STY-KRT02, sy-vline,
  WA_MMSRV_VENDER_COMP_STY-INFNR, sy-vline,
  WA_MMSRV_VENDER_COMP_STY-NAME1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMSRV_VENDER_COMP_STY 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_MMSRV_VENDER_COMP_STY 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_MMSRV_VENDER_COMP_STY INTO WA_MMSRV_VENDER_COMP_STY.


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

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

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

*Conversion exit MATN1, internal->external for field EMATN
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MMSRV_VENDER_COMP_STY-EMATN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMSRV_VENDER_COMP_STY-EMATN.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field UEKON
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MMSRV_VENDER_COMP_STY-UEKON
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMSRV_VENDER_COMP_STY-UEKON.
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_MMSRV_VENDER_COMP_STY_STR, 
EKORG TYPE STRING,
LIFNR TYPE STRING,
HKRIT TYPE STRING,
BEURT TYPE STRING,
LEBEW TYPE STRING,
LEBDT TYPE STRING,
TXTSL TYPE STRING,
KRT01 TYPE STRING,
KRT02 TYPE STRING,
INFNR TYPE STRING,
NAME1 TYPE STRING,
PREIS TYPE STRING,
WAERS TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
WERKS TYPE STRING,
PSTYP TYPE STRING,
NETPR TYPE STRING,
EMATN TYPE STRING,
MEINS TYPE STRING,
INF_EKORG TYPE STRING,
UEKON TYPE STRING,
UEKTP TYPE STRING,
MNG02 TYPE STRING,
KSCHL TYPE STRING,
KWERT TYPE STRING,
KPOSN TYPE STRING,
KNUMH TYPE STRING,
PRBES TYPE STRING,
SOS_LABEL TYPE STRING,
SOS_DOC_NO TYPE STRING,
HEADER_NAME TYPE STRING,
INDEX TYPE STRING,
NETWR TYPE STRING,
HETWR TYPE STRING,
MGAME TYPE STRING,
MGLME TYPE STRING,
WAERK TYPE STRING,
IMAGE_PATH TYPE STRING,
NETWRC TYPE STRING,
TOGGLE_BTN_STATUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMSRV_VENDER_COMP_STY_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_MMSRV_VENDER_COMP_STY_STR-EKORG sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-LIFNR sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-HKRIT sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-BEURT sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-LEBEW sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-LEBDT sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-TXTSL sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-KRT01 sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-KRT02 sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-INFNR sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-NAME1 sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-PREIS sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-WAERS sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-EBELN sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-EBELP sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-WERKS sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-PSTYP sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-NETPR sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-EMATN sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-MEINS sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-INF_EKORG sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-UEKON sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-UEKTP sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-MNG02 sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-KSCHL sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-KWERT sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-KPOSN sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-KNUMH sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-PRBES sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-SOS_LABEL sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-SOS_DOC_NO sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-HEADER_NAME sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-INDEX sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-NETWR sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-HETWR sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-MGAME sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-MGLME sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-WAERK sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-IMAGE_PATH sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-NETWRC sy-vline 
WA_MMSRV_VENDER_COMP_STY_STR-TOGGLE_BTN_STATUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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