ABAP Select data from SAP table V_MMIM_LN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_MMIM_LN
*  INTO TABLE @DATA(IT_V_MMIM_LN2).
*--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_V_MMIM_LN INDEX 1 INTO DATA(WA_V_MMIM_LN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_MMIM_LN>-MANDT = 1.
<V_MMIM_LN>-MATNR = 1.
<V_MMIM_LN>-WERKS = 1.
<V_MMIM_LN>-LGORT = 1.
<V_MMIM_LN>-LVORM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_MMIM_LN-LGPBE, sy-vline,
  WA_V_MMIM_LN-LFGJA, sy-vline,
  WA_V_MMIM_LN-LFMON, sy-vline,
  WA_V_MMIM_LN-KZILL, sy-vline,
  WA_V_MMIM_LN-KZILQ, sy-vline,
  WA_V_MMIM_LN-KZILS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_MMIM_LN 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_V_MMIM_LN 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_V_MMIM_LN INTO WA_V_MMIM_LN.


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

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

*Conversion exit GJAHR, internal->external for field MDJIN
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_V_MMIM_LN-MDJIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_MMIM_LN-MDJIN.
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_V_MMIM_LN_STR, 
MANDT TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
LVORM TYPE STRING,
LGPBE TYPE STRING,
LFGJA TYPE STRING,
LFMON TYPE STRING,
KZILL TYPE STRING,
KZILQ TYPE STRING,
KZILS TYPE STRING,
KZVLL TYPE STRING,
KZVLQ TYPE STRING,
KZVLS TYPE STRING,
DLINL TYPE STRING,
MTART TYPE STRING,
MATKL TYPE STRING,
ABCIN TYPE STRING,
LABST TYPE STRING,
INSME TYPE STRING,
SPEME TYPE STRING,
EINME TYPE STRING,
ATTYP TYPE STRING,
VKLAB TYPE STRING,
MDJIN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_MMIM_LN_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_V_MMIM_LN_STR-MANDT sy-vline 
WA_V_MMIM_LN_STR-MATNR sy-vline 
WA_V_MMIM_LN_STR-WERKS sy-vline 
WA_V_MMIM_LN_STR-LGORT sy-vline 
WA_V_MMIM_LN_STR-LVORM sy-vline 
WA_V_MMIM_LN_STR-LGPBE sy-vline 
WA_V_MMIM_LN_STR-LFGJA sy-vline 
WA_V_MMIM_LN_STR-LFMON sy-vline 
WA_V_MMIM_LN_STR-KZILL sy-vline 
WA_V_MMIM_LN_STR-KZILQ sy-vline 
WA_V_MMIM_LN_STR-KZILS sy-vline 
WA_V_MMIM_LN_STR-KZVLL sy-vline 
WA_V_MMIM_LN_STR-KZVLQ sy-vline 
WA_V_MMIM_LN_STR-KZVLS sy-vline 
WA_V_MMIM_LN_STR-DLINL sy-vline 
WA_V_MMIM_LN_STR-MTART sy-vline 
WA_V_MMIM_LN_STR-MATKL sy-vline 
WA_V_MMIM_LN_STR-ABCIN sy-vline 
WA_V_MMIM_LN_STR-LABST sy-vline 
WA_V_MMIM_LN_STR-INSME sy-vline 
WA_V_MMIM_LN_STR-SPEME sy-vline 
WA_V_MMIM_LN_STR-EINME sy-vline 
WA_V_MMIM_LN_STR-ATTYP sy-vline 
WA_V_MMIM_LN_STR-VKLAB sy-vline 
WA_V_MMIM_LN_STR-MDJIN sy-vline      INTO ld_text SEPARATED BY SPACE.

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