ABAP Select data from SAP table WLFS_IDOC_LIST_OUT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WLFS_IDOC_LIST_OUT
*  INTO TABLE @DATA(IT_WLFS_IDOC_LIST_OUT2).
*--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_WLFS_IDOC_LIST_OUT INDEX 1 INTO DATA(WA_WLFS_IDOC_LIST_OUT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WLFS_IDOC_LIST_OUT>-DOCNUM = 1.
<WLFS_IDOC_LIST_OUT>-STATUS = 1.
<WLFS_IDOC_LIST_OUT>-DOCTYP = 1.
<WLFS_IDOC_LIST_OUT>-DIRECT = 1.
<WLFS_IDOC_LIST_OUT>-RCVPOR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WLFS_IDOC_LIST_OUT-MESCOD, sy-vline,
  WA_WLFS_IDOC_LIST_OUT-MESFCT, sy-vline,
  WA_WLFS_IDOC_LIST_OUT-TEST, sy-vline,
  WA_WLFS_IDOC_LIST_OUT-SNDPOR, sy-vline,
  WA_WLFS_IDOC_LIST_OUT-CREDAT, sy-vline,
  WA_WLFS_IDOC_LIST_OUT-CRETIM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WLFS_IDOC_LIST_OUT 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_WLFS_IDOC_LIST_OUT 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_WLFS_IDOC_LIST_OUT INTO WA_WLFS_IDOC_LIST_OUT.


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

*Conversion exit EDIPV, internal->external for field SNDPFC
CALL FUNCTION 'CONVERSION_EXIT_EDIPV_OUTPUT'
  EXPORTING
    input =                      WA_WLFS_IDOC_LIST_OUT-SNDPFC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WLFS_IDOC_LIST_OUT-SNDPFC.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit EDIPV, internal->external for field RCVPFC
CALL FUNCTION 'CONVERSION_EXIT_EDIPV_OUTPUT'
  EXPORTING
    input =                      WA_WLFS_IDOC_LIST_OUT-RCVPFC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WLFS_IDOC_LIST_OUT-RCVPFC.
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_WLFS_IDOC_LIST_OUT_STR, 
DOCNUM TYPE STRING,
STATUS TYPE STRING,
DOCTYP TYPE STRING,
DIRECT TYPE STRING,
RCVPOR TYPE STRING,
MESCOD TYPE STRING,
MESFCT TYPE STRING,
TEST TYPE STRING,
SNDPOR TYPE STRING,
CREDAT TYPE STRING,
CRETIM TYPE STRING,
CIMTYP TYPE STRING,
PARTNR TYPE STRING,
STATXT TYPE STRING,
MESTYP TYPE STRING,
IDOCTP TYPE STRING,
DOCREL TYPE STRING,
STD TYPE STRING,
STDVRS TYPE STRING,
STDMES TYPE STRING,
OUTMOD TYPE STRING,
REFINT TYPE STRING,
REFGRP TYPE STRING,
REFMES TYPE STRING,
ARCKEY TYPE STRING,
SERIAL TYPE STRING,
UPDDAT TYPE STRING,
UPDTIM TYPE STRING,
IDENT TYPE STRING,
MAXSEGNUM TYPE STRING,
STATUSICON TYPE STRING,
DIRECTTEXT TYPE STRING,
EXPRESS TYPE STRING,
SELKZ TYPE STRING,
ICON_CHANGE TYPE STRING,
ICON_APPLOG TYPE STRING,
ICON_LINK TYPE STRING,
ICON_DIRECTION TYPE STRING,
ICON_RASTER TYPE STRING,
AGE_DAYS TYPE STRING,
APPL_LOG TYPE STRING,
IDOC_COUNTER TYPE STRING,
SNDPRT TYPE STRING,
SNDPRN TYPE STRING,
SNDPFC TYPE STRING,
RCVPRT TYPE STRING,
RCVPRN TYPE STRING,
RCVPFC TYPE STRING,
SNDLAD TYPE STRING,
RCVLAD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WLFS_IDOC_LIST_OUT_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_WLFS_IDOC_LIST_OUT_STR-DOCNUM sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-STATUS sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-DOCTYP sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-DIRECT sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-RCVPOR sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-MESCOD sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-MESFCT sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-TEST sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-SNDPOR sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-CREDAT sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-CRETIM sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-CIMTYP sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-PARTNR sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-STATXT sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-MESTYP sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-IDOCTP sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-DOCREL sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-STD sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-STDVRS sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-STDMES sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-OUTMOD sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-REFINT sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-REFGRP sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-REFMES sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-ARCKEY sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-SERIAL sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-UPDDAT sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-UPDTIM sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-IDENT sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-MAXSEGNUM sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-STATUSICON sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-DIRECTTEXT sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-EXPRESS sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-SELKZ sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-ICON_CHANGE sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-ICON_APPLOG sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-ICON_LINK sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-ICON_DIRECTION sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-ICON_RASTER sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-AGE_DAYS sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-APPL_LOG sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-IDOC_COUNTER sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-SNDPRT sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-SNDPRN sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-SNDPFC sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-RCVPRT sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-RCVPRN sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-RCVPFC sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-SNDLAD sy-vline 
WA_WLFS_IDOC_LIST_OUT_STR-RCVLAD sy-vline      INTO ld_text SEPARATED BY SPACE.

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