ABAP Select data from SAP table MMSPCMDQTY_D into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMSPCMDQTY_D
*  INTO TABLE @DATA(IT_MMSPCMDQTY_D2).
*--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_MMSPCMDQTY_D INDEX 1 INTO DATA(WA_MMSPCMDQTY_D2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMSPCMDQTY_D>-MANDT = 1.
<MMSPCMDQTY_D>-SRCGPROJCOMMODITYQUANTITYUUID = 1.
<MMSPCMDQTY_D>-SOURCINGPROJECTUUID = 1.
<MMSPCMDQTY_D>-SOURCINGPROJECTITEMUUID = 1.
<MMSPCMDQTY_D>-COMMODITY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMSPCMDQTY_D-VALIDITYENDDATE, sy-vline,
  WA_MMSPCMDQTY_D-VALIDITYSTARTDATE, sy-vline,
  WA_MMSPCMDQTY_D-COMMODITYQUANTITY, sy-vline,
  WA_MMSPCMDQTY_D-COMMODITYUNIT, sy-vline,
  WA_MMSPCMDQTY_D-PURGDOCCMMDTYREFDOCITMQTY, sy-vline,
  WA_MMSPCMDQTY_D-ITEMQUANTITYUNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMSPCMDQTY_D 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_MMSPCMDQTY_D 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_MMSPCMDQTY_D INTO WA_MMSPCMDQTY_D.


*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 COMMODITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MMSPCMDQTY_D-COMMODITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMSPCMDQTY_D-COMMODITYUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ITEMQUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MMSPCMDQTY_D-ITEMQUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMSPCMDQTY_D-ITEMQUANTITYUNIT.
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_MMSPCMDQTY_D_STR, 
MANDT TYPE STRING,
SRCGPROJCOMMODITYQUANTITYUUID TYPE STRING,
SOURCINGPROJECTUUID TYPE STRING,
SOURCINGPROJECTITEMUUID TYPE STRING,
COMMODITY TYPE STRING,
VALIDITYENDDATE TYPE STRING,
VALIDITYSTARTDATE TYPE STRING,
COMMODITYQUANTITY TYPE STRING,
COMMODITYUNIT TYPE STRING,
PURGDOCCMMDTYREFDOCITMQTY TYPE STRING,
ITEMQUANTITYUNIT TYPE STRING,
PURGDOCCMMDTYUPDATECYCLE TYPE STRING,
PURGDOCCMMDTYUPDATECYCLETEXT TYPE STRING,
COMMODITYNAME TYPE STRING,
DRAFTENTITYCREATIONDATETIME TYPE STRING,
DRAFTENTITYLASTCHANGEDATETIME TYPE STRING,
DRAFTADMINISTRATIVEDATAUUID TYPE STRING,
DRAFTENTITYOPERATIONCODE TYPE STRING,
HASACTIVEENTITY TYPE STRING,
DRAFTFIELDCHANGES TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMSPCMDQTY_D_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_MMSPCMDQTY_D_STR-MANDT sy-vline 
WA_MMSPCMDQTY_D_STR-SRCGPROJCOMMODITYQUANTITYUUID sy-vline 
WA_MMSPCMDQTY_D_STR-SOURCINGPROJECTUUID sy-vline 
WA_MMSPCMDQTY_D_STR-SOURCINGPROJECTITEMUUID sy-vline 
WA_MMSPCMDQTY_D_STR-COMMODITY sy-vline 
WA_MMSPCMDQTY_D_STR-VALIDITYENDDATE sy-vline 
WA_MMSPCMDQTY_D_STR-VALIDITYSTARTDATE sy-vline 
WA_MMSPCMDQTY_D_STR-COMMODITYQUANTITY sy-vline 
WA_MMSPCMDQTY_D_STR-COMMODITYUNIT sy-vline 
WA_MMSPCMDQTY_D_STR-PURGDOCCMMDTYREFDOCITMQTY sy-vline 
WA_MMSPCMDQTY_D_STR-ITEMQUANTITYUNIT sy-vline 
WA_MMSPCMDQTY_D_STR-PURGDOCCMMDTYUPDATECYCLE sy-vline 
WA_MMSPCMDQTY_D_STR-PURGDOCCMMDTYUPDATECYCLETEXT sy-vline 
WA_MMSPCMDQTY_D_STR-COMMODITYNAME sy-vline 
WA_MMSPCMDQTY_D_STR-DRAFTENTITYCREATIONDATETIME sy-vline 
WA_MMSPCMDQTY_D_STR-DRAFTENTITYLASTCHANGEDATETIME sy-vline 
WA_MMSPCMDQTY_D_STR-DRAFTADMINISTRATIVEDATAUUID sy-vline 
WA_MMSPCMDQTY_D_STR-DRAFTENTITYOPERATIONCODE sy-vline 
WA_MMSPCMDQTY_D_STR-HASACTIVEENTITY sy-vline 
WA_MMSPCMDQTY_D_STR-DRAFTFIELDCHANGES sy-vline      INTO ld_text SEPARATED BY SPACE.

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