ABAP Select data from SAP table DMF_S_PURCH_ORDR 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_PURCH_ORDR 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_PURCH_ORDR. 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_PURCH_ORDR 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_PURCH_ORDR TYPE STANDARD TABLE OF DMF_S_PURCH_ORDR,
      WA_DMF_S_PURCH_ORDR TYPE DMF_S_PURCH_ORDR,
      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_PURCH_ORDR> TYPE DMF_S_PURCH_ORDR.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DMF_S_PURCH_ORDR
*  INTO TABLE @DATA(IT_DMF_S_PURCH_ORDR2).
*--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_PURCH_ORDR INDEX 1 INTO DATA(WA_DMF_S_PURCH_ORDR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DMF_S_PURCH_ORDR>-PO_DOC_NUMBER = 1.
<DMF_S_PURCH_ORDR>-PO_ITEM_NUMBER = 1.
<DMF_S_PURCH_ORDR>-PO_SCHED_LN_NUM = 1.
<DMF_S_PURCH_ORDR>-FUNCTION = 1.
<DMF_S_PURCH_ORDR>-PO_DOC_TYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DMF_S_PURCH_ORDR-EXT_LOCATION_FROM, sy-vline,
  WA_DMF_S_PURCH_ORDR-EXT_LOCATION_FROM_TCD, sy-vline,
  WA_DMF_S_PURCH_ORDR-EXT_LOCATION_TO, sy-vline,
  WA_DMF_S_PURCH_ORDR-EXT_LOCATION_TO_TCD, sy-vline,
  WA_DMF_S_PURCH_ORDR-EXT_PRODUCT_ID, sy-vline,
  WA_DMF_S_PURCH_ORDR-EXT_PURCHASE_ORG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DMF_S_PURCH_ORDR 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_PURCH_ORDR 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_PURCH_ORDR INTO WA_DMF_S_PURCH_ORDR.


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

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

*Conversion exit GJAHR, internal->external for field SEASON_YR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_DMF_S_PURCH_ORDR-SEASON_YR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DMF_S_PURCH_ORDR-SEASON_YR.
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_PURCH_ORDR_STR, 
PO_DOC_NUMBER TYPE STRING,
PO_ITEM_NUMBER TYPE STRING,
PO_SCHED_LN_NUM TYPE STRING,
FUNCTION TYPE STRING,
PO_DOC_TYPE TYPE STRING,
EXT_LOCATION_FROM TYPE STRING,
EXT_LOCATION_FROM_TCD TYPE STRING,
EXT_LOCATION_TO TYPE STRING,
EXT_LOCATION_TO_TCD TYPE STRING,
EXT_PRODUCT_ID TYPE STRING,
EXT_PURCHASE_ORG TYPE STRING,
EXT_PUR_GRP TYPE STRING,
PLANNED_DELIVERY_TIME TYPE STRING,
PICKING_DATE_TIME TYPE STRING,
DELIVERY_DATE_TIME TYPE STRING,
AVAILABILITY_DATE_TIME TYPE STRING,
SCHEDULED_QUANTITY TYPE STRING,
COMMITTED_QUANTITY TYPE STRING,
COMMITTED_DATE_TIME TYPE STRING,
ORDER_UNIT TYPE STRING,
OUM_BUOM_DENOMINATOR TYPE STRING,
OUM_BUOM_NUMERATOR TYPE STRING,
ISSUED_QUANTITY TYPE STRING,
RECEIVED_QUANTITY TYPE STRING,
REDUCED_QUANTITY TYPE STRING,
IS_INBOUND_DELIVERY_COMPLETED TYPE STRING,
IS_OUTBOUND_DELIVERY_COMPLETED TYPE STRING,
IS_RETURNS TYPE STRING,
REPL_RELEVANCE_INDICATOR TYPE STRING,
REQUIREMENT_SEGMENT TYPE STRING,
STOCK_SEGMENT TYPE STRING,
SEASON_ID TYPE STRING,
SEASON_YR TYPE STRING,
EXT_COLLECT_ID TYPE STRING,
EXT_THEME_ID TYPE STRING,
ORDER_PLAN_ITEM_ID TYPE STRING,
CREATED_ON TYPE STRING,
PO_ITEM_QUANTITY TYPE STRING,
TIME_ZONE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DMF_S_PURCH_ORDR_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_PURCH_ORDR_STR-PO_DOC_NUMBER sy-vline 
WA_DMF_S_PURCH_ORDR_STR-PO_ITEM_NUMBER sy-vline 
WA_DMF_S_PURCH_ORDR_STR-PO_SCHED_LN_NUM sy-vline 
WA_DMF_S_PURCH_ORDR_STR-FUNCTION sy-vline 
WA_DMF_S_PURCH_ORDR_STR-PO_DOC_TYPE sy-vline 
WA_DMF_S_PURCH_ORDR_STR-EXT_LOCATION_FROM sy-vline 
WA_DMF_S_PURCH_ORDR_STR-EXT_LOCATION_FROM_TCD sy-vline 
WA_DMF_S_PURCH_ORDR_STR-EXT_LOCATION_TO sy-vline 
WA_DMF_S_PURCH_ORDR_STR-EXT_LOCATION_TO_TCD sy-vline 
WA_DMF_S_PURCH_ORDR_STR-EXT_PRODUCT_ID sy-vline 
WA_DMF_S_PURCH_ORDR_STR-EXT_PURCHASE_ORG sy-vline 
WA_DMF_S_PURCH_ORDR_STR-EXT_PUR_GRP sy-vline 
WA_DMF_S_PURCH_ORDR_STR-PLANNED_DELIVERY_TIME sy-vline 
WA_DMF_S_PURCH_ORDR_STR-PICKING_DATE_TIME sy-vline 
WA_DMF_S_PURCH_ORDR_STR-DELIVERY_DATE_TIME sy-vline 
WA_DMF_S_PURCH_ORDR_STR-AVAILABILITY_DATE_TIME sy-vline 
WA_DMF_S_PURCH_ORDR_STR-SCHEDULED_QUANTITY sy-vline 
WA_DMF_S_PURCH_ORDR_STR-COMMITTED_QUANTITY sy-vline 
WA_DMF_S_PURCH_ORDR_STR-COMMITTED_DATE_TIME sy-vline 
WA_DMF_S_PURCH_ORDR_STR-ORDER_UNIT sy-vline 
WA_DMF_S_PURCH_ORDR_STR-OUM_BUOM_DENOMINATOR sy-vline 
WA_DMF_S_PURCH_ORDR_STR-OUM_BUOM_NUMERATOR sy-vline 
WA_DMF_S_PURCH_ORDR_STR-ISSUED_QUANTITY sy-vline 
WA_DMF_S_PURCH_ORDR_STR-RECEIVED_QUANTITY sy-vline 
WA_DMF_S_PURCH_ORDR_STR-REDUCED_QUANTITY sy-vline 
WA_DMF_S_PURCH_ORDR_STR-IS_INBOUND_DELIVERY_COMPLETED sy-vline 
WA_DMF_S_PURCH_ORDR_STR-IS_OUTBOUND_DELIVERY_COMPLETED sy-vline 
WA_DMF_S_PURCH_ORDR_STR-IS_RETURNS sy-vline 
WA_DMF_S_PURCH_ORDR_STR-REPL_RELEVANCE_INDICATOR sy-vline 
WA_DMF_S_PURCH_ORDR_STR-REQUIREMENT_SEGMENT sy-vline 
WA_DMF_S_PURCH_ORDR_STR-STOCK_SEGMENT sy-vline 
WA_DMF_S_PURCH_ORDR_STR-SEASON_ID sy-vline 
WA_DMF_S_PURCH_ORDR_STR-SEASON_YR sy-vline 
WA_DMF_S_PURCH_ORDR_STR-EXT_COLLECT_ID sy-vline 
WA_DMF_S_PURCH_ORDR_STR-EXT_THEME_ID sy-vline 
WA_DMF_S_PURCH_ORDR_STR-ORDER_PLAN_ITEM_ID sy-vline 
WA_DMF_S_PURCH_ORDR_STR-CREATED_ON sy-vline 
WA_DMF_S_PURCH_ORDR_STR-PO_ITEM_QUANTITY sy-vline 
WA_DMF_S_PURCH_ORDR_STR-TIME_ZONE sy-vline      INTO ld_text SEPARATED BY SPACE.

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