ABAP Select data from SAP table DMF_S_LOCPROD_EXT_IF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DMF_S_LOCPROD_EXT_IF
*  INTO TABLE @DATA(IT_DMF_S_LOCPROD_EXT_IF2).
*--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_DMF_S_LOCPROD_EXT_IF INDEX 1 INTO DATA(WA_DMF_S_LOCPROD_EXT_IF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DMF_S_LOCPROD_EXT_IF>-EXT_PROD_ID = 1.
<DMF_S_LOCPROD_EXT_IF>-EXT_LOCATION_ID = 1.
<DMF_S_LOCPROD_EXT_IF>-LOCATION_TCD = 1.
<DMF_S_LOCPROD_EXT_IF>-FUNCTION = 1.
<DMF_S_LOCPROD_EXT_IF>-CONSREF_EXT_PROD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DMF_S_LOCPROD_EXT_IF-CONSREF_EXT_LOC, sy-vline,
  WA_DMF_S_LOCPROD_EXT_IF-CONSREF_LOC_TCD, sy-vline,
  WA_DMF_S_LOCPROD_EXT_IF-CONSREF_LOG_SYS, sy-vline,
  WA_DMF_S_LOCPROD_EXT_IF-CONS_REF_FACTOR, sy-vline,
  WA_DMF_S_LOCPROD_EXT_IF-CONS_REF_VAL_TO, sy-vline,
  WA_DMF_S_LOCPROD_EXT_IF-SEASON_IND, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DMF_S_LOCPROD_EXT_IF 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_DMF_S_LOCPROD_EXT_IF 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_DMF_S_LOCPROD_EXT_IF INTO WA_DMF_S_LOCPROD_EXT_IF.


*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 ISSUE_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_DMF_S_LOCPROD_EXT_IF-ISSUE_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DMF_S_LOCPROD_EXT_IF-ISSUE_UNIT.
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_DMF_S_LOCPROD_EXT_IF_STR, 
EXT_PROD_ID TYPE STRING,
EXT_LOCATION_ID TYPE STRING,
LOCATION_TCD TYPE STRING,
FUNCTION TYPE STRING,
CONSREF_EXT_PROD TYPE STRING,
CONSREF_EXT_LOC TYPE STRING,
CONSREF_LOC_TCD TYPE STRING,
CONSREF_LOG_SYS TYPE STRING,
CONS_REF_FACTOR TYPE STRING,
CONS_REF_VAL_TO TYPE STRING,
SEASON_IND TYPE STRING,
CONSIGNMENT_IND TYPE STRING,
SELL_CLASS TYPE STRING,
LISTING_STATUS TYPE STRING,
DWT_PROFILE_ID TYPE STRING,
FC_PROFILE_ID TYPE STRING,
MODEL_PROFILE_ID TYPE STRING,
SOURCE_OF_SUPPLY TYPE STRING,
SCHEDULING_GROUP TYPE STRING,
MIN_STOCK TYPE STRING,
MAX_STOCK TYPE STRING,
ISSUE_UNIT TYPE STRING,
REORDER_POINT TYPE STRING,
GOODS_RECEIPTS_TIME TYPE STRING,
MRP_TYPE TYPE STRING,
ROUNDING_PROFILE TYPE STRING,
UNIT_OF_MEASURE_GROUP TYPE STRING,
TARGET_STOCK TYPE STRING,
MIN_TARGET_RANGE_OF_COVERAGE TYPE STRING,
MAX_TARGET_RANGE_OF_COVERAGE TYPE STRING,
GOODS_ISSUE_TIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DMF_S_LOCPROD_EXT_IF_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_DMF_S_LOCPROD_EXT_IF_STR-EXT_PROD_ID sy-vline 
WA_DMF_S_LOCPROD_EXT_IF_STR-EXT_LOCATION_ID sy-vline 
WA_DMF_S_LOCPROD_EXT_IF_STR-LOCATION_TCD sy-vline 
WA_DMF_S_LOCPROD_EXT_IF_STR-FUNCTION sy-vline 
WA_DMF_S_LOCPROD_EXT_IF_STR-CONSREF_EXT_PROD sy-vline 
WA_DMF_S_LOCPROD_EXT_IF_STR-CONSREF_EXT_LOC sy-vline 
WA_DMF_S_LOCPROD_EXT_IF_STR-CONSREF_LOC_TCD sy-vline 
WA_DMF_S_LOCPROD_EXT_IF_STR-CONSREF_LOG_SYS sy-vline 
WA_DMF_S_LOCPROD_EXT_IF_STR-CONS_REF_FACTOR sy-vline 
WA_DMF_S_LOCPROD_EXT_IF_STR-CONS_REF_VAL_TO sy-vline 
WA_DMF_S_LOCPROD_EXT_IF_STR-SEASON_IND sy-vline 
WA_DMF_S_LOCPROD_EXT_IF_STR-CONSIGNMENT_IND sy-vline 
WA_DMF_S_LOCPROD_EXT_IF_STR-SELL_CLASS sy-vline 
WA_DMF_S_LOCPROD_EXT_IF_STR-LISTING_STATUS sy-vline 
WA_DMF_S_LOCPROD_EXT_IF_STR-DWT_PROFILE_ID sy-vline 
WA_DMF_S_LOCPROD_EXT_IF_STR-FC_PROFILE_ID sy-vline 
WA_DMF_S_LOCPROD_EXT_IF_STR-MODEL_PROFILE_ID sy-vline 
WA_DMF_S_LOCPROD_EXT_IF_STR-SOURCE_OF_SUPPLY sy-vline 
WA_DMF_S_LOCPROD_EXT_IF_STR-SCHEDULING_GROUP sy-vline 
WA_DMF_S_LOCPROD_EXT_IF_STR-MIN_STOCK sy-vline 
WA_DMF_S_LOCPROD_EXT_IF_STR-MAX_STOCK sy-vline 
WA_DMF_S_LOCPROD_EXT_IF_STR-ISSUE_UNIT sy-vline 
WA_DMF_S_LOCPROD_EXT_IF_STR-REORDER_POINT sy-vline 
WA_DMF_S_LOCPROD_EXT_IF_STR-GOODS_RECEIPTS_TIME sy-vline 
WA_DMF_S_LOCPROD_EXT_IF_STR-MRP_TYPE sy-vline 
WA_DMF_S_LOCPROD_EXT_IF_STR-ROUNDING_PROFILE sy-vline 
WA_DMF_S_LOCPROD_EXT_IF_STR-UNIT_OF_MEASURE_GROUP sy-vline 
WA_DMF_S_LOCPROD_EXT_IF_STR-TARGET_STOCK sy-vline 
WA_DMF_S_LOCPROD_EXT_IF_STR-MIN_TARGET_RANGE_OF_COVERAGE sy-vline 
WA_DMF_S_LOCPROD_EXT_IF_STR-MAX_TARGET_RANGE_OF_COVERAGE sy-vline 
WA_DMF_S_LOCPROD_EXT_IF_STR-GOODS_ISSUE_TIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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