ABAP Select data from SAP table WCB_S_COND_LIST_CONDITIONS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WCB_S_COND_LIST_CONDITIONS
*  INTO TABLE @DATA(IT_WCB_S_COND_LIST_CONDITIONS2).
*--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_WCB_S_COND_LIST_CONDITIONS INDEX 1 INTO DATA(WA_WCB_S_COND_LIST_CONDITIONS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WCB_S_COND_LIST_CONDITIONS>-DATAB_K = 1.
<WCB_S_COND_LIST_CONDITIONS>-DATBI_K = 1.
<WCB_S_COND_LIST_CONDITIONS>-KNUMH_D = 1.
<WCB_S_COND_LIST_CONDITIONS>-KOTABNR_D = 1.
<WCB_S_COND_LIST_CONDITIONS>-KAPPL_D = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WCB_S_COND_LIST_CONDITIONS-KSCHL_D, sy-vline,
  WA_WCB_S_COND_LIST_CONDITIONS-KSCHL_TEXT_D, sy-vline,
  WA_WCB_S_COND_LIST_CONDITIONS-KRECH_D, sy-vline,
  WA_WCB_S_COND_LIST_CONDITIONS-KBETR_OUT_D, sy-vline,
  WA_WCB_S_COND_LIST_CONDITIONS-KONWA_D, sy-vline,
  WA_WCB_S_COND_LIST_CONDITIONS-KPEIN_D, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WCB_S_COND_LIST_CONDITIONS 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_WCB_S_COND_LIST_CONDITIONS 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_WCB_S_COND_LIST_CONDITIONS INTO WA_WCB_S_COND_LIST_CONDITIONS.


*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 KOTAB, internal->external for field KOTABNR_D
CALL FUNCTION 'CONVERSION_EXIT_KOTAB_OUTPUT'
  EXPORTING
    input =                      WA_WCB_S_COND_LIST_CONDITIONS-KOTABNR_D
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WCB_S_COND_LIST_CONDITIONS-KOTABNR_D.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field KMEIN_D
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WCB_S_COND_LIST_CONDITIONS-KMEIN_D
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WCB_S_COND_LIST_CONDITIONS-KMEIN_D.
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_WCB_S_COND_LIST_CONDITIONS_STR, 
DATAB_K TYPE STRING,
DATBI_K TYPE STRING,
KNUMH_D TYPE STRING,
KOTABNR_D TYPE STRING,
KAPPL_D TYPE STRING,
KSCHL_D TYPE STRING,
KSCHL_TEXT_D TYPE STRING,
KRECH_D TYPE STRING,
KBETR_OUT_D TYPE STRING,
KONWA_D TYPE STRING,
KPEIN_D TYPE STRING,
KMEIN_D TYPE STRING,
VTEXT_D TYPE STRING,
KZNEP_D TYPE STRING,
ZTERM_D TYPE STRING,
LOEVM_KO_D TYPE STRING,
KZBZG_D TYPE STRING,
SCALE_S TYPE STRING,
SCALE_UNIT_S TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WCB_S_COND_LIST_CONDITIONS_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_WCB_S_COND_LIST_CONDITIONS_STR-DATAB_K sy-vline 
WA_WCB_S_COND_LIST_CONDITIONS_STR-DATBI_K sy-vline 
WA_WCB_S_COND_LIST_CONDITIONS_STR-KNUMH_D sy-vline 
WA_WCB_S_COND_LIST_CONDITIONS_STR-KOTABNR_D sy-vline 
WA_WCB_S_COND_LIST_CONDITIONS_STR-KAPPL_D sy-vline 
WA_WCB_S_COND_LIST_CONDITIONS_STR-KSCHL_D sy-vline 
WA_WCB_S_COND_LIST_CONDITIONS_STR-KSCHL_TEXT_D sy-vline 
WA_WCB_S_COND_LIST_CONDITIONS_STR-KRECH_D sy-vline 
WA_WCB_S_COND_LIST_CONDITIONS_STR-KBETR_OUT_D sy-vline 
WA_WCB_S_COND_LIST_CONDITIONS_STR-KONWA_D sy-vline 
WA_WCB_S_COND_LIST_CONDITIONS_STR-KPEIN_D sy-vline 
WA_WCB_S_COND_LIST_CONDITIONS_STR-KMEIN_D sy-vline 
WA_WCB_S_COND_LIST_CONDITIONS_STR-VTEXT_D sy-vline 
WA_WCB_S_COND_LIST_CONDITIONS_STR-KZNEP_D sy-vline 
WA_WCB_S_COND_LIST_CONDITIONS_STR-ZTERM_D sy-vline 
WA_WCB_S_COND_LIST_CONDITIONS_STR-LOEVM_KO_D sy-vline 
WA_WCB_S_COND_LIST_CONDITIONS_STR-KZBZG_D sy-vline 
WA_WCB_S_COND_LIST_CONDITIONS_STR-SCALE_S sy-vline 
WA_WCB_S_COND_LIST_CONDITIONS_STR-SCALE_UNIT_S sy-vline      INTO ld_text SEPARATED BY SPACE.

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