ABAP Select data from SAP table MCLIPSWHS into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MCLIPSWHS 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 MCLIPSWHS. 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 MCLIPSWHS 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_MCLIPSWHS TYPE STANDARD TABLE OF MCLIPSWHS,
      WA_MCLIPSWHS TYPE MCLIPSWHS,
      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: <MCLIPSWHS> TYPE MCLIPSWHS.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MCLIPSWHS
*  INTO TABLE @DATA(IT_MCLIPSWHS2).
*--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_MCLIPSWHS INDEX 1 INTO DATA(WA_MCLIPSWHS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MCLIPSWHS>-METYP = 1.
<MCLIPSWHS>-WARTYP = 1.
<MCLIPSWHS>-BELTYP = 1.
<MCLIPSWHS>-VZTTG = 1.
<MCLIPSWHS>-VHARTL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MCLIPSWHS-TIMEL, sy-vline,
  WA_MCLIPSWHS-PLGTYP, sy-vline,
  WA_MCLIPSWHS-PKOBER, sy-vline,
  WA_MCLIPSWHS-VGLZT, sy-vline,
  WA_MCLIPSWHS-LGNUV, sy-vline,
  WA_MCLIPSWHS-WARTYV, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MCLIPSWHS 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_MCLIPSWHS 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_MCLIPSWHS INTO WA_MCLIPSWHS.


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

*Conversion exit CUNIT, internal->external for field VOLEHL
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MCLIPSWHS-VOLEHL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MCLIPSWHS-VOLEHL.
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_MCLIPSWHS_STR, 
METYP TYPE STRING,
WARTYP TYPE STRING,
BELTYP TYPE STRING,
VZTTG TYPE STRING,
VHARTL TYPE STRING,
TIMEL TYPE STRING,
PLGTYP TYPE STRING,
PKOBER TYPE STRING,
VGLZT TYPE STRING,
LGNUV TYPE STRING,
WARTYV TYPE STRING,
BELTYV TYPE STRING,
PLGTYV TYPE STRING,
PKOBEV TYPE STRING,
LPRIV TYPE STRING,
METYV TYPE STRING,
VHARTV TYPE STRING,
TIMEV TYPE STRING,
VGLDT TYPE STRING,
GEWEHL TYPE STRING,
VOLEHL TYPE STRING,
BZEIT_E TYPE STRING,
VHART_E TYPE STRING,
BZEIT_V TYPE STRING,
VHART_V TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MCLIPSWHS_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_MCLIPSWHS_STR-METYP sy-vline 
WA_MCLIPSWHS_STR-WARTYP sy-vline 
WA_MCLIPSWHS_STR-BELTYP sy-vline 
WA_MCLIPSWHS_STR-VZTTG sy-vline 
WA_MCLIPSWHS_STR-VHARTL sy-vline 
WA_MCLIPSWHS_STR-TIMEL sy-vline 
WA_MCLIPSWHS_STR-PLGTYP sy-vline 
WA_MCLIPSWHS_STR-PKOBER sy-vline 
WA_MCLIPSWHS_STR-VGLZT sy-vline 
WA_MCLIPSWHS_STR-LGNUV sy-vline 
WA_MCLIPSWHS_STR-WARTYV sy-vline 
WA_MCLIPSWHS_STR-BELTYV sy-vline 
WA_MCLIPSWHS_STR-PLGTYV sy-vline 
WA_MCLIPSWHS_STR-PKOBEV sy-vline 
WA_MCLIPSWHS_STR-LPRIV sy-vline 
WA_MCLIPSWHS_STR-METYV sy-vline 
WA_MCLIPSWHS_STR-VHARTV sy-vline 
WA_MCLIPSWHS_STR-TIMEV sy-vline 
WA_MCLIPSWHS_STR-VGLDT sy-vline 
WA_MCLIPSWHS_STR-GEWEHL sy-vline 
WA_MCLIPSWHS_STR-VOLEHL sy-vline 
WA_MCLIPSWHS_STR-BZEIT_E sy-vline 
WA_MCLIPSWHS_STR-VHART_E sy-vline 
WA_MCLIPSWHS_STR-BZEIT_V sy-vline 
WA_MCLIPSWHS_STR-VHART_V sy-vline      INTO ld_text SEPARATED BY SPACE.

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