ABAP Select data from SAP table PSFM_FIELDS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PSFM_FIELDS
*  INTO TABLE @DATA(IT_PSFM_FIELDS2).
*--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_PSFM_FIELDS INDEX 1 INTO DATA(WA_PSFM_FIELDS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PSFM_FIELDS>-WERKS = 1.
<PSFM_FIELDS>-MATNR = 1.
<PSFM_FIELDS>-FPLNR = 1.
<PSFM_FIELDS>-FAREG = 1.
<PSFM_FIELDS>-WRBTR_OPFM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PSFM_FIELDS-KWMENG_D, sy-vline,
  WA_PSFM_FIELDS-FKIMG, sy-vline,
  WA_PSFM_FIELDS-KUNNR, sy-vline,
  WA_PSFM_FIELDS-AUART, sy-vline,
  WA_PSFM_FIELDS-FKBER, sy-vline,
  WA_PSFM_FIELDS-PRCTR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PSFM_FIELDS 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_PSFM_FIELDS 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_PSFM_FIELDS INTO WA_PSFM_FIELDS.


*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_PSFM_FIELDS-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSFM_FIELDS-MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PSFM_FIELDS-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSFM_FIELDS-KOSTL.
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_PSFM_FIELDS_STR, 
WERKS TYPE STRING,
MATNR TYPE STRING,
FPLNR TYPE STRING,
FAREG TYPE STRING,
WRBTR_OPFM TYPE STRING,
KWMENG_D TYPE STRING,
FKIMG TYPE STRING,
KUNNR TYPE STRING,
AUART TYPE STRING,
FKBER TYPE STRING,
PRCTR TYPE STRING,
VKORG TYPE STRING,
SPART TYPE STRING,
VTWEG TYPE STRING,
KOSTL TYPE STRING,
ABGRU TYPE STRING,
PSM_BUDAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PSFM_FIELDS_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_PSFM_FIELDS_STR-WERKS sy-vline 
WA_PSFM_FIELDS_STR-MATNR sy-vline 
WA_PSFM_FIELDS_STR-FPLNR sy-vline 
WA_PSFM_FIELDS_STR-FAREG sy-vline 
WA_PSFM_FIELDS_STR-WRBTR_OPFM sy-vline 
WA_PSFM_FIELDS_STR-KWMENG_D sy-vline 
WA_PSFM_FIELDS_STR-FKIMG sy-vline 
WA_PSFM_FIELDS_STR-KUNNR sy-vline 
WA_PSFM_FIELDS_STR-AUART sy-vline 
WA_PSFM_FIELDS_STR-FKBER sy-vline 
WA_PSFM_FIELDS_STR-PRCTR sy-vline 
WA_PSFM_FIELDS_STR-VKORG sy-vline 
WA_PSFM_FIELDS_STR-SPART sy-vline 
WA_PSFM_FIELDS_STR-VTWEG sy-vline 
WA_PSFM_FIELDS_STR-KOSTL sy-vline 
WA_PSFM_FIELDS_STR-ABGRU sy-vline 
WA_PSFM_FIELDS_STR-PSM_BUDAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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