ABAP Select data from SAP table PFM_S_BSEG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PFM_S_BSEG
*  INTO TABLE @DATA(IT_PFM_S_BSEG2).
*--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_PFM_S_BSEG INDEX 1 INTO DATA(WA_PFM_S_BSEG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PFM_S_BSEG>-BUKRS = 1.
<PFM_S_BSEG>-BELNR = 1.
<PFM_S_BSEG>-GJAHR = 1.
<PFM_S_BSEG>-BUZEI = 1.
<PFM_S_BSEG>-PROJK = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PFM_S_BSEG-XREF3, sy-vline,
  WA_PFM_S_BSEG-FISTL, sy-vline,
  WA_PFM_S_BSEG-FIPOS, sy-vline,
  WA_PFM_S_BSEG-GEBER, sy-vline,
  WA_PFM_S_BSEG-KBLNR, sy-vline,
  WA_PFM_S_BSEG-FKBER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PFM_S_BSEG 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_PFM_S_BSEG 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_PFM_S_BSEG INTO WA_PFM_S_BSEG.


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

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

*Conversion exit ABPSP, internal->external for field PROJK
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_PFM_S_BSEG-PROJK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PFM_S_BSEG-PROJK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit FMCIS, internal->external for field FIPOS
CALL FUNCTION 'CONVERSION_EXIT_FMCIS_OUTPUT'
  EXPORTING
    input =                      WA_PFM_S_BSEG-FIPOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PFM_S_BSEG-FIPOS.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field GRANT_NBR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PFM_S_BSEG-GRANT_NBR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PFM_S_BSEG-GRANT_NBR.
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_PFM_S_BSEG_STR, 
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUZEI TYPE STRING,
PROJK TYPE STRING,
XREF3 TYPE STRING,
FISTL TYPE STRING,
FIPOS TYPE STRING,
GEBER TYPE STRING,
KBLNR TYPE STRING,
FKBER TYPE STRING,
GRANT_NBR TYPE STRING,
MEASURE TYPE STRING,
DMBTR TYPE STRING,
FDTAG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PFM_S_BSEG_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_PFM_S_BSEG_STR-BUKRS sy-vline 
WA_PFM_S_BSEG_STR-BELNR sy-vline 
WA_PFM_S_BSEG_STR-GJAHR sy-vline 
WA_PFM_S_BSEG_STR-BUZEI sy-vline 
WA_PFM_S_BSEG_STR-PROJK sy-vline 
WA_PFM_S_BSEG_STR-XREF3 sy-vline 
WA_PFM_S_BSEG_STR-FISTL sy-vline 
WA_PFM_S_BSEG_STR-FIPOS sy-vline 
WA_PFM_S_BSEG_STR-GEBER sy-vline 
WA_PFM_S_BSEG_STR-KBLNR sy-vline 
WA_PFM_S_BSEG_STR-FKBER sy-vline 
WA_PFM_S_BSEG_STR-GRANT_NBR sy-vline 
WA_PFM_S_BSEG_STR-MEASURE sy-vline 
WA_PFM_S_BSEG_STR-DMBTR sy-vline 
WA_PFM_S_BSEG_STR-FDTAG sy-vline      INTO ld_text SEPARATED BY SPACE.

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