ABAP Select data from SAP table WLF_INVC_API_ITEM_COND_DATA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WLF_INVC_API_ITEM_COND_DATA
*  INTO TABLE @DATA(IT_WLF_INVC_API_ITEM_COND_DATA2).
*--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_WLF_INVC_API_ITEM_COND_DATA INDEX 1 INTO DATA(WA_WLF_INVC_API_ITEM_COND_DATA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WLF_INVC_API_ITEM_COND_DATA>-CONDITION_DATA = 1.
<WLF_INVC_API_ITEM_COND_DATA>-OLDNR = 1.
<WLF_INVC_API_ITEM_COND_DATA>-OLDPO = 1.
<WLF_INVC_API_ITEM_COND_DATA>-WBELN = 1.
<WLF_INVC_API_ITEM_COND_DATA>-KPOSN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WLF_INVC_API_ITEM_COND_DATA-KSCHL, sy-vline,
  WA_WLF_INVC_API_ITEM_COND_DATA-KBETR, sy-vline,
  WA_WLF_INVC_API_ITEM_COND_DATA-KAWRT, sy-vline,
  WA_WLF_INVC_API_ITEM_COND_DATA-KWERT, sy-vline,
  WA_WLF_INVC_API_ITEM_COND_DATA-KSTBS, sy-vline,
  WA_WLF_INVC_API_ITEM_COND_DATA-KWAEH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WLF_INVC_API_ITEM_COND_DATA 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_WLF_INVC_API_ITEM_COND_DATA 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_WLF_INVC_API_ITEM_COND_DATA INTO WA_WLF_INVC_API_ITEM_COND_DATA.


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

*Conversion exit CUNIT, internal->external for field KMEIN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WLF_INVC_API_ITEM_COND_DATA-KMEIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WLF_INVC_API_ITEM_COND_DATA-KMEIN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field KONMS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WLF_INVC_API_ITEM_COND_DATA-KONMS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WLF_INVC_API_ITEM_COND_DATA-KONMS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SAKN1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WLF_INVC_API_ITEM_COND_DATA-SAKN1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WLF_INVC_API_ITEM_COND_DATA-SAKN1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SAKN2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WLF_INVC_API_ITEM_COND_DATA-SAKN2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WLF_INVC_API_ITEM_COND_DATA-SAKN2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field KKURS
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_WLF_INVC_API_ITEM_COND_DATA-KKURS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WLF_INVC_API_ITEM_COND_DATA-KKURS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field WBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WLF_INVC_API_ITEM_COND_DATA-WBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WLF_INVC_API_ITEM_COND_DATA-WBELN.
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_WLF_INVC_API_ITEM_COND_DATA_STR, 
CONDITION_DATA TYPE STRING,
OLDNR TYPE STRING,
OLDPO TYPE STRING,
WBELN TYPE STRING,
KPOSN TYPE STRING,
KSCHL TYPE STRING,
KBETR TYPE STRING,
KAWRT TYPE STRING,
KWERT TYPE STRING,
KSTBS TYPE STRING,
KWAEH TYPE STRING,
KPEIN TYPE STRING,
KMEIN TYPE STRING,
KNUMH TYPE STRING,
KRECH TYPE STRING,
KRUEK TYPE STRING,
KINAK TYPE STRING,
KNTYP TYPE STRING,
KDATU TYPE STRING,
KRELI TYPE STRING,
KOLNR TYPE STRING,
KSTEU TYPE STRING,
KHERK TYPE STRING,
KSTAT TYPE STRING,
KAPPL TYPE STRING,
KONWS TYPE STRING,
KONMS TYPE STRING,
WAERS TYPE STRING,
KOPOS TYPE STRING,
KVSL1 TYPE STRING,
KVSL2 TYPE STRING,
KZBZG TYPE STRING,
STUNR TYPE STRING,
ZAEHK TYPE STRING,
KOAID TYPE STRING,
SAKN1 TYPE STRING,
SAKN2 TYPE STRING,
KUMZA TYPE STRING,
KUMNE TYPE STRING,
KKURS TYPE STRING,
MWSK1 TYPE STRING,
MWSK2 TYPE STRING,
UPDKZ TYPE STRING,
KBFLAG TYPE STRING,
CONDITION_DATA_X TYPE STRING,
WBELN TYPE STRING,
POSNR TYPE STRING,
STUNR TYPE STRING,
ZAEHK TYPE STRING,
KSCHL TYPE STRING,
KBETR TYPE STRING,
WAERS TYPE STRING,
KMEIN TYPE STRING,
KPEIN TYPE STRING,
UPDKZ TYPE STRING,
KWERT_INX TYPE STRING,
KSTEU_INX TYPE STRING,
KWERT TYPE STRING,
KSTEU TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WLF_INVC_API_ITEM_COND_DATA_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_WLF_INVC_API_ITEM_COND_DATA_STR-CONDITION_DATA sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-OLDNR sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-OLDPO sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-WBELN sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KPOSN sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KSCHL sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KBETR sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KAWRT sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KWERT sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KSTBS sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KWAEH sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KPEIN sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KMEIN sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KNUMH sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KRECH sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KRUEK sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KINAK sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KNTYP sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KDATU sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KRELI sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KOLNR sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KSTEU sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KHERK sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KSTAT sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KAPPL sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KONWS sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KONMS sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-WAERS sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KOPOS sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KVSL1 sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KVSL2 sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KZBZG sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-STUNR sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-ZAEHK sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KOAID sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-SAKN1 sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-SAKN2 sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KUMZA sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KUMNE sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KKURS sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-MWSK1 sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-MWSK2 sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-UPDKZ sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KBFLAG sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-CONDITION_DATA_X sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-WBELN sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-POSNR sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-STUNR sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-ZAEHK sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KSCHL sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KBETR sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-WAERS sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KMEIN sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KPEIN sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-UPDKZ sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KWERT_INX sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KSTEU_INX sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KWERT sy-vline 
WA_WLF_INVC_API_ITEM_COND_DATA_STR-KSTEU sy-vline      INTO ld_text SEPARATED BY SPACE.

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