ABAP Select data from SAP table RFM_PSST_VIEW into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFM_PSST_VIEW
*  INTO TABLE @DATA(IT_RFM_PSST_VIEW2).
*--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_RFM_PSST_VIEW INDEX 1 INTO DATA(WA_RFM_PSST_VIEW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFM_PSST_VIEW>-MANDT = 1.
<RFM_PSST_VIEW>-VBELN = 1.
<RFM_PSST_VIEW>-POSNR = 1.
<RFM_PSST_VIEW>-MATNR = 1.
<RFM_PSST_VIEW>-PSTYV = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFM_PSST_VIEW-SPART, sy-vline,
  WA_RFM_PSST_VIEW-WERKS, sy-vline,
  WA_RFM_PSST_VIEW-VSTEL, sy-vline,
  WA_RFM_PSST_VIEW-MEINS, sy-vline,
  WA_RFM_PSST_VIEW-KWMENG, sy-vline,
  WA_RFM_PSST_VIEW-KBMENG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RFM_PSST_VIEW 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_RFM_PSST_VIEW 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_RFM_PSST_VIEW INTO WA_RFM_PSST_VIEW.


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

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

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

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

*Conversion exit ALPHA, internal->external for field RFM_PSST_GROUP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFM_PSST_VIEW-RFM_PSST_GROUP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFM_PSST_VIEW-RFM_PSST_GROUP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AUART, internal->external for field AUART
CALL FUNCTION 'CONVERSION_EXIT_AUART_OUTPUT'
  EXPORTING
    input =                      WA_RFM_PSST_VIEW-AUART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFM_PSST_VIEW-AUART.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFM_PSST_VIEW-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFM_PSST_VIEW-KUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ATINN, internal->external for field COLOR_ATINN
CALL FUNCTION 'CONVERSION_EXIT_ATINN_OUTPUT'
  EXPORTING
    input =                      WA_RFM_PSST_VIEW-COLOR_ATINN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFM_PSST_VIEW-COLOR_ATINN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ATINN, internal->external for field SIZE1_ATINN
CALL FUNCTION 'CONVERSION_EXIT_ATINN_OUTPUT'
  EXPORTING
    input =                      WA_RFM_PSST_VIEW-SIZE1_ATINN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFM_PSST_VIEW-SIZE1_ATINN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ATINN, internal->external for field SIZE2_ATINN
CALL FUNCTION 'CONVERSION_EXIT_ATINN_OUTPUT'
  EXPORTING
    input =                      WA_RFM_PSST_VIEW-SIZE2_ATINN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFM_PSST_VIEW-SIZE2_ATINN.
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_RFM_PSST_VIEW_STR, 
MANDT TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
MATNR TYPE STRING,
PSTYV TYPE STRING,
SPART TYPE STRING,
WERKS TYPE STRING,
VSTEL TYPE STRING,
MEINS TYPE STRING,
KWMENG TYPE STRING,
KBMENG TYPE STRING,
KLMENG TYPE STRING,
VRKME TYPE STRING,
REQQTY_BU TYPE STRING,
LFGSA TYPE STRING,
SGT_RCAT TYPE STRING,
FSH_SEASON_YEAR TYPE STRING,
FSH_SEASON TYPE STRING,
FSH_COLLECTION TYPE STRING,
FSH_THEME TYPE STRING,
RFM_PSST_RULE TYPE STRING,
RFM_PSST_GROUP TYPE STRING,
ERDAT TYPE STRING,
AUART TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
KUNNR TYPE STRING,
VDATU TYPE STRING,
MATKL TYPE STRING,
COLOR_ATINN TYPE STRING,
SIZE1_ATINN TYPE STRING,
SIZE2_ATINN TYPE STRING,
COLOR TYPE STRING,
SIZE1 TYPE STRING,
SIZE2 TYPE STRING,
ALLOC_QTY TYPE STRING,
KUNNR_NAME1 TYPE STRING,
BEZEI_AUART TYPE STRING,
VTEXT_VKORG TYPE STRING,
VTEXT_VTWEG TYPE STRING,
VTEXT_SPART TYPE STRING,
WERKS_NAME1 TYPE STRING,
MAKTX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFM_PSST_VIEW_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_RFM_PSST_VIEW_STR-MANDT sy-vline 
WA_RFM_PSST_VIEW_STR-VBELN sy-vline 
WA_RFM_PSST_VIEW_STR-POSNR sy-vline 
WA_RFM_PSST_VIEW_STR-MATNR sy-vline 
WA_RFM_PSST_VIEW_STR-PSTYV sy-vline 
WA_RFM_PSST_VIEW_STR-SPART sy-vline 
WA_RFM_PSST_VIEW_STR-WERKS sy-vline 
WA_RFM_PSST_VIEW_STR-VSTEL sy-vline 
WA_RFM_PSST_VIEW_STR-MEINS sy-vline 
WA_RFM_PSST_VIEW_STR-KWMENG sy-vline 
WA_RFM_PSST_VIEW_STR-KBMENG sy-vline 
WA_RFM_PSST_VIEW_STR-KLMENG sy-vline 
WA_RFM_PSST_VIEW_STR-VRKME sy-vline 
WA_RFM_PSST_VIEW_STR-REQQTY_BU sy-vline 
WA_RFM_PSST_VIEW_STR-LFGSA sy-vline 
WA_RFM_PSST_VIEW_STR-SGT_RCAT sy-vline 
WA_RFM_PSST_VIEW_STR-FSH_SEASON_YEAR sy-vline 
WA_RFM_PSST_VIEW_STR-FSH_SEASON sy-vline 
WA_RFM_PSST_VIEW_STR-FSH_COLLECTION sy-vline 
WA_RFM_PSST_VIEW_STR-FSH_THEME sy-vline 
WA_RFM_PSST_VIEW_STR-RFM_PSST_RULE sy-vline 
WA_RFM_PSST_VIEW_STR-RFM_PSST_GROUP sy-vline 
WA_RFM_PSST_VIEW_STR-ERDAT sy-vline 
WA_RFM_PSST_VIEW_STR-AUART sy-vline 
WA_RFM_PSST_VIEW_STR-VKORG sy-vline 
WA_RFM_PSST_VIEW_STR-VTWEG sy-vline 
WA_RFM_PSST_VIEW_STR-KUNNR sy-vline 
WA_RFM_PSST_VIEW_STR-VDATU sy-vline 
WA_RFM_PSST_VIEW_STR-MATKL sy-vline 
WA_RFM_PSST_VIEW_STR-COLOR_ATINN sy-vline 
WA_RFM_PSST_VIEW_STR-SIZE1_ATINN sy-vline 
WA_RFM_PSST_VIEW_STR-SIZE2_ATINN sy-vline 
WA_RFM_PSST_VIEW_STR-COLOR sy-vline 
WA_RFM_PSST_VIEW_STR-SIZE1 sy-vline 
WA_RFM_PSST_VIEW_STR-SIZE2 sy-vline 
WA_RFM_PSST_VIEW_STR-ALLOC_QTY sy-vline 
WA_RFM_PSST_VIEW_STR-KUNNR_NAME1 sy-vline 
WA_RFM_PSST_VIEW_STR-BEZEI_AUART sy-vline 
WA_RFM_PSST_VIEW_STR-VTEXT_VKORG sy-vline 
WA_RFM_PSST_VIEW_STR-VTEXT_VTWEG sy-vline 
WA_RFM_PSST_VIEW_STR-VTEXT_SPART sy-vline 
WA_RFM_PSST_VIEW_STR-WERKS_NAME1 sy-vline 
WA_RFM_PSST_VIEW_STR-MAKTX sy-vline      INTO ld_text SEPARATED BY SPACE.

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