ABAP Select data from SAP table SFW_BF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SFW_BF
*  INTO TABLE @DATA(IT_SFW_BF2).
*--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_SFW_BF INDEX 1 INTO DATA(WA_SFW_BF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SFW_BF>-BFUNCTION = 1.
<SFW_BF>-VERSION = 1.
<SFW_BF>-IS_SYSTEM = 1.
<SFW_BF>-AUTHOR = 1.
<SFW_BF>-CREATEDON = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SFW_BF-CHANGEDBY, sy-vline,
  WA_SFW_BF-CHANGEDON, sy-vline,
  WA_SFW_BF-TIMESTAMP, sy-vline,
  WA_SFW_BF-TYPE, sy-vline,
  WA_SFW_BF-REVERSIBLE, sy-vline,
  WA_SFW_BF-OBSOLETE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SFW_BF 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_SFW_BF 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_SFW_BF INTO WA_SFW_BF.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_SFW_BF_STR, 
BFUNCTION TYPE STRING,
VERSION TYPE STRING,
IS_SYSTEM TYPE STRING,
AUTHOR TYPE STRING,
CREATEDON TYPE STRING,
CHANGEDBY TYPE STRING,
CHANGEDON TYPE STRING,
TIMESTAMP TYPE STRING,
TYPE TYPE STRING,
REVERSIBLE TYPE STRING,
OBSOLETE TYPE STRING,
COMPONENT TYPE STRING,
FROM_RELEASE TYPE STRING,
S4H_OP_STATE TYPE STRING,
S4H_MC_STATE TYPE STRING,
S4H_PC_STATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SFW_BF_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_SFW_BF_STR-BFUNCTION sy-vline 
WA_SFW_BF_STR-VERSION sy-vline 
WA_SFW_BF_STR-IS_SYSTEM sy-vline 
WA_SFW_BF_STR-AUTHOR sy-vline 
WA_SFW_BF_STR-CREATEDON sy-vline 
WA_SFW_BF_STR-CHANGEDBY sy-vline 
WA_SFW_BF_STR-CHANGEDON sy-vline 
WA_SFW_BF_STR-TIMESTAMP sy-vline 
WA_SFW_BF_STR-TYPE sy-vline 
WA_SFW_BF_STR-REVERSIBLE sy-vline 
WA_SFW_BF_STR-OBSOLETE sy-vline 
WA_SFW_BF_STR-COMPONENT sy-vline 
WA_SFW_BF_STR-FROM_RELEASE sy-vline 
WA_SFW_BF_STR-S4H_OP_STATE sy-vline 
WA_SFW_BF_STR-S4H_MC_STATE sy-vline 
WA_SFW_BF_STR-S4H_PC_STATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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