ABAP Select data from SAP table JBSDATFE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM JBSDATFE
*  INTO TABLE @DATA(IT_JBSDATFE2).
*--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_JBSDATFE INDEX 1 INTO DATA(WA_JBSDATFE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<JBSDATFE>-DBLFZ = 1.
<JBSDATFE>-DELFZ = 1.
<JBSDATFE>-DAUSWE = 1.
<JBSDATFE>-DKNTGB = 1.
<JBSDATFE>-DKNTFL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_JBSDATFE-DUNDLB, sy-vline,
  WA_JBSDATFE-DUNDLV, sy-vline,
  WA_JBSDATFE-DVALUT, sy-vline,
  WA_JBSDATFE-DZHLTG, sy-vline,
  WA_JBSDATFE-DZUSBE, sy-vline,
  WA_JBSDATFE-DZUSEN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_JBSDATFE 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_JBSDATFE 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_JBSDATFE INTO WA_JBSDATFE.


*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_JBSDATFE_STR, 
DBLFZ TYPE STRING,
DELFZ TYPE STRING,
DAUSWE TYPE STRING,
DKNTGB TYPE STRING,
DKNTFL TYPE STRING,
DUNDLB TYPE STRING,
DUNDLV TYPE STRING,
DVALUT TYPE STRING,
DZHLTG TYPE STRING,
DZUSBE TYPE STRING,
DZUSEN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_JBSDATFE_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_JBSDATFE_STR-DBLFZ sy-vline 
WA_JBSDATFE_STR-DELFZ sy-vline 
WA_JBSDATFE_STR-DAUSWE sy-vline 
WA_JBSDATFE_STR-DKNTGB sy-vline 
WA_JBSDATFE_STR-DKNTFL sy-vline 
WA_JBSDATFE_STR-DUNDLB sy-vline 
WA_JBSDATFE_STR-DUNDLV sy-vline 
WA_JBSDATFE_STR-DVALUT sy-vline 
WA_JBSDATFE_STR-DZHLTG sy-vline 
WA_JBSDATFE_STR-DZUSBE sy-vline 
WA_JBSDATFE_STR-DZUSEN sy-vline      INTO ld_text SEPARATED BY SPACE.

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