ABAP Select data from SAP table /SAPDII/WTY_RETURNPARTS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SAPDII/WTY_RETURNPARTS 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 /SAPDII/WTY_RETURNPARTS. 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 /SAPDII/WTY_RETURNPARTS 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_/SAPDII/WTY_RETURNPARTS TYPE STANDARD TABLE OF /SAPDII/WTY_RETURNPARTS,
      WA_/SAPDII/WTY_RETURNPARTS TYPE /SAPDII/WTY_RETURNPARTS,
      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: </SAPDII/WTY_RETURNPARTS> TYPE /SAPDII/WTY_RETURNPARTS.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SAPDII/WTY_RETURNPARTS
  INTO TABLE IT_/SAPDII/WTY_RETURNPARTS.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPDII/WTY_RETURNPARTS
*  INTO TABLE @DATA(IT_/SAPDII/WTY_RETURNPARTS2).
*--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_/SAPDII/WTY_RETURNPARTS INDEX 1 INTO DATA(WA_/SAPDII/WTY_RETURNPARTS2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SAPDII/WTY_RETURNPARTS ASSIGNING </SAPDII/WTY_RETURNPARTS>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPDII/WTY_RETURNPARTS>-MANDT = 1.
</SAPDII/WTY_RETURNPARTS>-PVGUID = 1.
</SAPDII/WTY_RETURNPARTS>-PVCNT = 1.
</SAPDII/WTY_RETURNPARTS>-RETDT = 1.
</SAPDII/WTY_RETURNPARTS>-MATNR = 1.

ENDLOOP.

LOOP AT IT_/SAPDII/WTY_RETURNPARTS INTO WA_/SAPDII/WTY_RETURNPARTS.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPDII/WTY_RETURNPARTS-MAKTX, sy-vline,
  WA_/SAPDII/WTY_RETURNPARTS-QUANT, sy-vline,
  WA_/SAPDII/WTY_RETURNPARTS-MEINH, sy-vline,
  WA_/SAPDII/WTY_RETURNPARTS-REFNO, sy-vline,
  WA_/SAPDII/WTY_RETURNPARTS-REFDT, sy-vline,
  WA_/SAPDII/WTY_RETURNPARTS-RETPA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPDII/WTY_RETURNPARTS 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_/SAPDII/WTY_RETURNPARTS 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_/SAPDII/WTY_RETURNPARTS INTO WA_/SAPDII/WTY_RETURNPARTS.


*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_/SAPDII/WTY_RETURNPARTS-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPDII/WTY_RETURNPARTS-MATNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field CLMNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPDII/WTY_RETURNPARTS-CLMNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPDII/WTY_RETURNPARTS-CLMNO.
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_/SAPDII/WTY_RETURNPARTS_STR, 
MANDT TYPE STRING,
PVGUID TYPE STRING,
PVCNT TYPE STRING,
RETDT TYPE STRING,
MATNR TYPE STRING,
MAKTX TYPE STRING,
QUANT TYPE STRING,
MEINH TYPE STRING,
REFNO TYPE STRING,
REFDT TYPE STRING,
RETPA TYPE STRING,
RETPA_TXT TYPE STRING,
RETPA_V TYPE STRING,
RETPA_V_TXT TYPE STRING,
CAUSP TYPE STRING,
CREADAT TYPE STRING,
CREABY TYPE STRING,
CHNGDAT TYPE STRING,
CHNGBY TYPE STRING,
PNAME TYPE STRING,
CLMNO TYPE STRING,
POSNR TYPE STRING,
POSKT TYPE STRING,
ITMNO TYPE STRING,
ITMTX TYPE STRING,
DEFCT TYPE STRING,
DEFTX TYPE STRING,
REFKT TYPE STRING,
REFNR TYPE STRING,
PVTXT TYPE STRING,
DISTANCE_PART TYPE STRING,
P_UNIT TYPE STRING,
MEASURE_POINT TYPE STRING,
MDOCM TYPE STRING,
RESULT_OUT_MWTYI TYPE STRING,
RESULT_IN_MWTYI TYPE STRING,
HERST TYPE STRING,
SPLIT TYPE STRING,
POSKT_CUST TYPE STRING,
POSNR_HIER TYPE STRING,
VERSION_GUID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPDII/WTY_RETURNPARTS_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_/SAPDII/WTY_RETURNPARTS_STR-MANDT sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-PVGUID sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-PVCNT sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-RETDT sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-MATNR sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-MAKTX sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-QUANT sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-MEINH sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-REFNO sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-REFDT sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-RETPA sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-RETPA_TXT sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-RETPA_V sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-RETPA_V_TXT sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-CAUSP sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-CREADAT sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-CREABY sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-CHNGDAT sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-CHNGBY sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-PNAME sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-CLMNO sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-POSNR sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-POSKT sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-ITMNO sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-ITMTX sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-DEFCT sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-DEFTX sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-REFKT sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-REFNR sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-PVTXT sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-DISTANCE_PART sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-P_UNIT sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-MEASURE_POINT sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-MDOCM sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-RESULT_OUT_MWTYI sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-RESULT_IN_MWTYI sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-HERST sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-SPLIT sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-POSKT_CUST sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-POSNR_HIER sy-vline 
WA_/SAPDII/WTY_RETURNPARTS_STR-VERSION_GUID sy-vline      INTO ld_text SEPARATED BY SPACE.

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