ABAP Select data from SAP table MSKUU into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MSKUU
*  INTO TABLE @DATA(IT_MSKUU2).
*--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_MSKUU INDEX 1 INTO DATA(WA_MSKUU2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MSKUU-KUNNR, sy-vline,
  WA_MSKUU-LFGJA, sy-vline,
  WA_MSKUU-LFMON, sy-vline,
  WA_MSKUU-KUSPR, sy-vline,
  WA_MSKUU-KULAB, sy-vline,
  WA_MSKUU-KUINS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MSKUU 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_MSKUU 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_MSKUU INTO WA_MSKUU.


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

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

*Conversion exit GJAHR, internal->external for field LFGJA
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_MSKUU-LFGJA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MSKUU-LFGJA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field KUJIN
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_MSKUU-KUJIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MSKUU-KUJIN.
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_MSKUU_STR, 
MANDT TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
CHARG TYPE STRING,
SOBKZ TYPE STRING,
KUNNR TYPE STRING,
LFGJA TYPE STRING,
LFMON TYPE STRING,
KUSPR TYPE STRING,
KULAB TYPE STRING,
KUINS TYPE STRING,
KUVLA TYPE STRING,
KUVIN TYPE STRING,
KUILL TYPE STRING,
KUILQ TYPE STRING,
KUVLL TYPE STRING,
KUVLQ TYPE STRING,
KUFLL TYPE STRING,
KUFLQ TYPE STRING,
KUDLL TYPE STRING,
KUEIN TYPE STRING,
KUVEI TYPE STRING,
ERSDA TYPE STRING,
KUJIN TYPE STRING,
KURUE TYPE STRING,
KUUML TYPE STRING,
SGT_SCAT TYPE STRING,
FSH_SEASON_YEAR TYPE STRING,
FSH_SEASON TYPE STRING,
FSH_COLLECTION TYPE STRING,
FSH_THEME TYPE STRING,
FSH_SALLOC_QTY TYPE STRING,
/CWM/KULAB TYPE STRING,
/CWM/KUINS TYPE STRING,
/CWM/KUEIN TYPE STRING,
/CWM/KUUML TYPE STRING,
/CWM/KUVLA TYPE STRING,
/CWM/KUVIN TYPE STRING,
/CWM/KUVEI TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MSKUU_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_MSKUU_STR-MANDT sy-vline 
WA_MSKUU_STR-MATNR sy-vline 
WA_MSKUU_STR-WERKS sy-vline 
WA_MSKUU_STR-CHARG sy-vline 
WA_MSKUU_STR-SOBKZ sy-vline 
WA_MSKUU_STR-KUNNR sy-vline 
WA_MSKUU_STR-LFGJA sy-vline 
WA_MSKUU_STR-LFMON sy-vline 
WA_MSKUU_STR-KUSPR sy-vline 
WA_MSKUU_STR-KULAB sy-vline 
WA_MSKUU_STR-KUINS sy-vline 
WA_MSKUU_STR-KUVLA sy-vline 
WA_MSKUU_STR-KUVIN sy-vline 
WA_MSKUU_STR-KUILL sy-vline 
WA_MSKUU_STR-KUILQ sy-vline 
WA_MSKUU_STR-KUVLL sy-vline 
WA_MSKUU_STR-KUVLQ sy-vline 
WA_MSKUU_STR-KUFLL sy-vline 
WA_MSKUU_STR-KUFLQ sy-vline 
WA_MSKUU_STR-KUDLL sy-vline 
WA_MSKUU_STR-KUEIN sy-vline 
WA_MSKUU_STR-KUVEI sy-vline 
WA_MSKUU_STR-ERSDA sy-vline 
WA_MSKUU_STR-KUJIN sy-vline 
WA_MSKUU_STR-KURUE sy-vline 
WA_MSKUU_STR-KUUML sy-vline 
WA_MSKUU_STR-SGT_SCAT sy-vline 
WA_MSKUU_STR-FSH_SEASON_YEAR sy-vline 
WA_MSKUU_STR-FSH_SEASON sy-vline 
WA_MSKUU_STR-FSH_COLLECTION sy-vline 
WA_MSKUU_STR-FSH_THEME sy-vline 
WA_MSKUU_STR-FSH_SALLOC_QTY sy-vline 
WA_MSKUU_STR-/CWM/KULAB sy-vline 
WA_MSKUU_STR-/CWM/KUINS sy-vline 
WA_MSKUU_STR-/CWM/KUEIN sy-vline 
WA_MSKUU_STR-/CWM/KUUML sy-vline 
WA_MSKUU_STR-/CWM/KUVLA sy-vline 
WA_MSKUU_STR-/CWM/KUVIN sy-vline 
WA_MSKUU_STR-/CWM/KUVEI sy-vline      INTO ld_text SEPARATED BY SPACE.

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