ABAP Select data from SAP table MPO_ILV_QUANTITIES into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MPO_ILV_QUANTITIES
*  INTO TABLE @DATA(IT_MPO_ILV_QUANTITIES2).
*--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_MPO_ILV_QUANTITIES INDEX 1 INTO DATA(WA_MPO_ILV_QUANTITIES2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MPO_ILV_QUANTITIES>-KOSTL = 1.
<MPO_ILV_QUANTITIES>-PRZNR = 1.
<MPO_ILV_QUANTITIES>-LSTAR = 1.
<MPO_ILV_QUANTITIES>-LSTAR_TEXT = 1.
<MPO_ILV_QUANTITIES>-KOSTL_TEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MPO_ILV_QUANTITIES-PRZNR_TXT, sy-vline,
  WA_MPO_ILV_QUANTITIES-GJAHR, sy-vline,
  WA_MPO_ILV_QUANTITIES-PERIO, sy-vline,
  WA_MPO_ILV_QUANTITIES-WRTTP, sy-vline,
  WA_MPO_ILV_QUANTITIES-VERSN, sy-vline,
  WA_MPO_ILV_QUANTITIES-KWAER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MPO_ILV_QUANTITIES 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_MPO_ILV_QUANTITIES 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_MPO_ILV_QUANTITIES INTO WA_MPO_ILV_QUANTITIES.


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

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

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

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

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

*Conversion exit CUNIT, internal->external for field MEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MPO_ILV_QUANTITIES-MEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPO_ILV_QUANTITIES-MEINH.
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_MPO_ILV_QUANTITIES_STR, 
KOSTL TYPE STRING,
PRZNR TYPE STRING,
LSTAR TYPE STRING,
LSTAR_TEXT TYPE STRING,
KOSTL_TEXT TYPE STRING,
PRZNR_TXT TYPE STRING,
GJAHR TYPE STRING,
PERIO TYPE STRING,
WRTTP TYPE STRING,
VERSN TYPE STRING,
KWAER TYPE STRING,
MEINH TYPE STRING,
LST TYPE STRING,
KAP TYPE STRING,
DIS TYPE STRING,
LSTEXT TYPE STRING,
KAPEXT TYPE STRING,
DSTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MPO_ILV_QUANTITIES_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_MPO_ILV_QUANTITIES_STR-KOSTL sy-vline 
WA_MPO_ILV_QUANTITIES_STR-PRZNR sy-vline 
WA_MPO_ILV_QUANTITIES_STR-LSTAR sy-vline 
WA_MPO_ILV_QUANTITIES_STR-LSTAR_TEXT sy-vline 
WA_MPO_ILV_QUANTITIES_STR-KOSTL_TEXT sy-vline 
WA_MPO_ILV_QUANTITIES_STR-PRZNR_TXT sy-vline 
WA_MPO_ILV_QUANTITIES_STR-GJAHR sy-vline 
WA_MPO_ILV_QUANTITIES_STR-PERIO sy-vline 
WA_MPO_ILV_QUANTITIES_STR-WRTTP sy-vline 
WA_MPO_ILV_QUANTITIES_STR-VERSN sy-vline 
WA_MPO_ILV_QUANTITIES_STR-KWAER sy-vline 
WA_MPO_ILV_QUANTITIES_STR-MEINH sy-vline 
WA_MPO_ILV_QUANTITIES_STR-LST sy-vline 
WA_MPO_ILV_QUANTITIES_STR-KAP sy-vline 
WA_MPO_ILV_QUANTITIES_STR-DIS sy-vline 
WA_MPO_ILV_QUANTITIES_STR-LSTEXT sy-vline 
WA_MPO_ILV_QUANTITIES_STR-KAPEXT sy-vline 
WA_MPO_ILV_QUANTITIES_STR-DSTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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