ABAP Select data from SAP table RFRM_PROCUREMENT_PART into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFRM_PROCUREMENT_PART
*  INTO TABLE @DATA(IT_RFRM_PROCUREMENT_PART2).
*--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_RFRM_PROCUREMENT_PART INDEX 1 INTO DATA(WA_RFRM_PROCUREMENT_PART2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFRM_PROCUREMENT_PART>-MANDT = 1.
<RFRM_PROCUREMENT_PART>-BTYPB = 1.
<RFRM_PROCUREMENT_PART>-BLNRB = 1.
<RFRM_PROCUREMENT_PART>-BPOSB = 1.
<RFRM_PROCUREMENT_PART>-GABLV = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFRM_PROCUREMENT_PART-MATNR, sy-vline,
  WA_RFRM_PROCUREMENT_PART-PMENB, sy-vline,
  WA_RFRM_PROCUREMENT_PART-PEINB, sy-vline,
  WA_RFRM_PROCUREMENT_PART-IMNGB, sy-vline,
  WA_RFRM_PROCUREMENT_PART-IEINB, sy-vline,
  WA_RFRM_PROCUREMENT_PART-BARTV, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RFRM_PROCUREMENT_PART 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_RFRM_PROCUREMENT_PART 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_RFRM_PROCUREMENT_PART INTO WA_RFRM_PROCUREMENT_PART.


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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RFRM_PROCUREMENT_PART-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFRM_PROCUREMENT_PART-MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

*Conversion exit CUNIT, internal->external for field EINTO
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RFRM_PROCUREMENT_PART-EINTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFRM_PROCUREMENT_PART-EINTO.
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_RFRM_PROCUREMENT_PART_STR, 
MANDT TYPE STRING,
BTYPB TYPE STRING,
BLNRB TYPE STRING,
BPOSB TYPE STRING,
GABLV TYPE STRING,
MATNR TYPE STRING,
PMENB TYPE STRING,
PEINB TYPE STRING,
IMNGB TYPE STRING,
IEINB TYPE STRING,
BARTV TYPE STRING,
VERVF TYPE STRING,
SUMCD TYPE STRING,
EINCD TYPE STRING,
SUMFT TYPE STRING,
EINFT TYPE STRING,
SUMPA TYPE STRING,
EINPA TYPE STRING,
SUMVT TYPE STRING,
EINVT TYPE STRING,
SUMTO TYPE STRING,
EINTO TYPE STRING,
WERKA TYPE STRING,
KZVST TYPE STRING,
STBES TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFRM_PROCUREMENT_PART_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_RFRM_PROCUREMENT_PART_STR-MANDT sy-vline 
WA_RFRM_PROCUREMENT_PART_STR-BTYPB sy-vline 
WA_RFRM_PROCUREMENT_PART_STR-BLNRB sy-vline 
WA_RFRM_PROCUREMENT_PART_STR-BPOSB sy-vline 
WA_RFRM_PROCUREMENT_PART_STR-GABLV sy-vline 
WA_RFRM_PROCUREMENT_PART_STR-MATNR sy-vline 
WA_RFRM_PROCUREMENT_PART_STR-PMENB sy-vline 
WA_RFRM_PROCUREMENT_PART_STR-PEINB sy-vline 
WA_RFRM_PROCUREMENT_PART_STR-IMNGB sy-vline 
WA_RFRM_PROCUREMENT_PART_STR-IEINB sy-vline 
WA_RFRM_PROCUREMENT_PART_STR-BARTV sy-vline 
WA_RFRM_PROCUREMENT_PART_STR-VERVF sy-vline 
WA_RFRM_PROCUREMENT_PART_STR-SUMCD sy-vline 
WA_RFRM_PROCUREMENT_PART_STR-EINCD sy-vline 
WA_RFRM_PROCUREMENT_PART_STR-SUMFT sy-vline 
WA_RFRM_PROCUREMENT_PART_STR-EINFT sy-vline 
WA_RFRM_PROCUREMENT_PART_STR-SUMPA sy-vline 
WA_RFRM_PROCUREMENT_PART_STR-EINPA sy-vline 
WA_RFRM_PROCUREMENT_PART_STR-SUMVT sy-vline 
WA_RFRM_PROCUREMENT_PART_STR-EINVT sy-vline 
WA_RFRM_PROCUREMENT_PART_STR-SUMTO sy-vline 
WA_RFRM_PROCUREMENT_PART_STR-EINTO sy-vline 
WA_RFRM_PROCUREMENT_PART_STR-WERKA sy-vline 
WA_RFRM_PROCUREMENT_PART_STR-KZVST sy-vline 
WA_RFRM_PROCUREMENT_PART_STR-STBES sy-vline      INTO ld_text SEPARATED BY SPACE.

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