ABAP Select data from SAP table ICRC_WD_S_LINE_ITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICRC_WD_S_LINE_ITEM
*  INTO TABLE @DATA(IT_ICRC_WD_S_LINE_ITEM2).
*--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_ICRC_WD_S_LINE_ITEM INDEX 1 INTO DATA(WA_ICRC_WD_S_LINE_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICRC_WD_S_LINE_ITEM>-DOCNR = 1.
<ICRC_WD_S_LINE_ITEM>-BUDAT = 1.
<ICRC_WD_S_LINE_ITEM>-RCOMP = 1.
<ICRC_WD_S_LINE_ITEM>-RASSC = 1.
<ICRC_WD_S_LINE_ITEM>-TSL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICRC_WD_S_LINE_ITEM-RTCUR, sy-vline,
  WA_ICRC_WD_S_LINE_ITEM-HKONT, sy-vline,
  WA_ICRC_WD_S_LINE_ITEM-KOART, sy-vline,
  WA_ICRC_WD_S_LINE_ITEM-ACCOUNT_NAME, sy-vline,
  WA_ICRC_WD_S_LINE_ITEM-COMPANY_NAME, sy-vline,
  WA_ICRC_WD_S_LINE_ITEM-PARTNER_NAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICRC_WD_S_LINE_ITEM 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_ICRC_WD_S_LINE_ITEM 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_ICRC_WD_S_LINE_ITEM INTO WA_ICRC_WD_S_LINE_ITEM.


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

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

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

*Conversion exit AC172, internal->external for field TSL
CALL FUNCTION 'CONVERSION_EXIT_AC172_OUTPUT'
  EXPORTING
    input =                      WA_ICRC_WD_S_LINE_ITEM-TSL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICRC_WD_S_LINE_ITEM-TSL.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GJAHR, internal->external for field RYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ICRC_WD_S_LINE_ITEM-RYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICRC_WD_S_LINE_ITEM-RYEAR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit GJAHR, internal->external for field REFRYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ICRC_WD_S_LINE_ITEM-REFRYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICRC_WD_S_LINE_ITEM-REFRYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU172, internal->external for field GTSL
CALL FUNCTION 'CONVERSION_EXIT_AU172_OUTPUT'
  EXPORTING
    input =                      WA_ICRC_WD_S_LINE_ITEM-GTSL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICRC_WD_S_LINE_ITEM-GTSL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RACCT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICRC_WD_S_LINE_ITEM-RACCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICRC_WD_S_LINE_ITEM-RACCT.
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_ICRC_WD_S_LINE_ITEM_STR, 
DOCNR TYPE STRING,
BUDAT TYPE STRING,
RCOMP TYPE STRING,
RASSC TYPE STRING,
TSL TYPE STRING,
RTCUR TYPE STRING,
HKONT TYPE STRING,
KOART TYPE STRING,
ACCOUNT_NAME TYPE STRING,
COMPANY_NAME TYPE STRING,
PARTNER_NAME TYPE STRING,
USNAM TYPE STRING,
ROBUKRS TYPE STRING,
RYEAR TYPE STRING,
REFDOCLN TYPE STRING,
GL_SIRID TYPE STRING,
DOCLN TYPE STRING,
PRCTR TYPE STRING,
PPRCT TYPE STRING,
REFRYEAR TYPE STRING,
GCURR TYPE STRING,
GTSL TYPE STRING,
RTYPE TYPE STRING,
RACCT TYPE STRING,
BILKT_TXT TYPE STRING,
PSTAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICRC_WD_S_LINE_ITEM_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_ICRC_WD_S_LINE_ITEM_STR-DOCNR sy-vline 
WA_ICRC_WD_S_LINE_ITEM_STR-BUDAT sy-vline 
WA_ICRC_WD_S_LINE_ITEM_STR-RCOMP sy-vline 
WA_ICRC_WD_S_LINE_ITEM_STR-RASSC sy-vline 
WA_ICRC_WD_S_LINE_ITEM_STR-TSL sy-vline 
WA_ICRC_WD_S_LINE_ITEM_STR-RTCUR sy-vline 
WA_ICRC_WD_S_LINE_ITEM_STR-HKONT sy-vline 
WA_ICRC_WD_S_LINE_ITEM_STR-KOART sy-vline 
WA_ICRC_WD_S_LINE_ITEM_STR-ACCOUNT_NAME sy-vline 
WA_ICRC_WD_S_LINE_ITEM_STR-COMPANY_NAME sy-vline 
WA_ICRC_WD_S_LINE_ITEM_STR-PARTNER_NAME sy-vline 
WA_ICRC_WD_S_LINE_ITEM_STR-USNAM sy-vline 
WA_ICRC_WD_S_LINE_ITEM_STR-ROBUKRS sy-vline 
WA_ICRC_WD_S_LINE_ITEM_STR-RYEAR sy-vline 
WA_ICRC_WD_S_LINE_ITEM_STR-REFDOCLN sy-vline 
WA_ICRC_WD_S_LINE_ITEM_STR-GL_SIRID sy-vline 
WA_ICRC_WD_S_LINE_ITEM_STR-DOCLN sy-vline 
WA_ICRC_WD_S_LINE_ITEM_STR-PRCTR sy-vline 
WA_ICRC_WD_S_LINE_ITEM_STR-PPRCT sy-vline 
WA_ICRC_WD_S_LINE_ITEM_STR-REFRYEAR sy-vline 
WA_ICRC_WD_S_LINE_ITEM_STR-GCURR sy-vline 
WA_ICRC_WD_S_LINE_ITEM_STR-GTSL sy-vline 
WA_ICRC_WD_S_LINE_ITEM_STR-RTYPE sy-vline 
WA_ICRC_WD_S_LINE_ITEM_STR-RACCT sy-vline 
WA_ICRC_WD_S_LINE_ITEM_STR-BILKT_TXT sy-vline 
WA_ICRC_WD_S_LINE_ITEM_STR-PSTAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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