ABAP Select data from SAP table WOSB_SELECTION into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WOSB_SELECTION
*  INTO TABLE @DATA(IT_WOSB_SELECTION2).
*--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_WOSB_SELECTION INDEX 1 INTO DATA(WA_WOSB_SELECTION2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WOSB_SELECTION>-STORE = 1.
<WOSB_SELECTION>-DTP_KZ = 1.
<WOSB_SELECTION>-KALWO = 1.
<WOSB_SELECTION>-LFDATUM_VON = 1.
<WOSB_SELECTION>-LFDATUM_BIS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WOSB_SELECTION-SEL_KZ, sy-vline,
  WA_WOSB_SELECTION-ABT_NR, sy-vline,
  WA_WOSB_SELECTION-WAREN_GRP, sy-vline,
  WA_WOSB_SELECTION-ART_NR, sy-vline,
  WA_WOSB_SELECTION-AUFTEILER_NR, sy-vline,
  WA_WOSB_SELECTION-ZUSKZ_1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WOSB_SELECTION 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_WOSB_SELECTION 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_WOSB_SELECTION INTO WA_WOSB_SELECTION.


*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 ART_NR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WOSB_SELECTION-ART_NR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WOSB_SELECTION-ART_NR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFTEILER_NR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WOSB_SELECTION-AUFTEILER_NR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WOSB_SELECTION-AUFTEILER_NR.
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_WOSB_SELECTION_STR, 
STORE TYPE STRING,
DTP_KZ TYPE STRING,
KALWO TYPE STRING,
LFDATUM_VON TYPE STRING,
LFDATUM_BIS TYPE STRING,
SEL_KZ TYPE STRING,
ABT_NR TYPE STRING,
WAREN_GRP TYPE STRING,
ART_NR TYPE STRING,
AUFTEILER_NR TYPE STRING,
ZUSKZ_1 TYPE STRING,
ZUSKZ_2 TYPE STRING,
RM_DATUM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WOSB_SELECTION_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_WOSB_SELECTION_STR-STORE sy-vline 
WA_WOSB_SELECTION_STR-DTP_KZ sy-vline 
WA_WOSB_SELECTION_STR-KALWO sy-vline 
WA_WOSB_SELECTION_STR-LFDATUM_VON sy-vline 
WA_WOSB_SELECTION_STR-LFDATUM_BIS sy-vline 
WA_WOSB_SELECTION_STR-SEL_KZ sy-vline 
WA_WOSB_SELECTION_STR-ABT_NR sy-vline 
WA_WOSB_SELECTION_STR-WAREN_GRP sy-vline 
WA_WOSB_SELECTION_STR-ART_NR sy-vline 
WA_WOSB_SELECTION_STR-AUFTEILER_NR sy-vline 
WA_WOSB_SELECTION_STR-ZUSKZ_1 sy-vline 
WA_WOSB_SELECTION_STR-ZUSKZ_2 sy-vline 
WA_WOSB_SELECTION_STR-RM_DATUM sy-vline      INTO ld_text SEPARATED BY SPACE.

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