ABAP Select data from SAP table LXE_WL_STRUCT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM LXE_WL_STRUCT
*  INTO TABLE @DATA(IT_LXE_WL_STRUCT2).
*--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_LXE_WL_STRUCT INDEX 1 INTO DATA(WA_LXE_WL_STRUCT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<LXE_WL_STRUCT>-TARG_LANG = 1.
<LXE_WL_STRUCT>-CUSTMNR = 1.
<LXE_WL_STRUCT>-OBJTYPE = 1.
<LXE_WL_STRUCT>-OBJNAME = 1.
<LXE_WL_STRUCT>-DOMATYP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_LXE_WL_STRUCT-DOMANAM, sy-vline,
  WA_LXE_WL_STRUCT-COLLTYP, sy-vline,
  WA_LXE_WL_STRUCT-COLLNAM, sy-vline,
  WA_LXE_WL_STRUCT-ORIG_LANG, sy-vline,
  WA_LXE_WL_STRUCT-SOUR_LANG, sy-vline,
  WA_LXE_WL_STRUCT-WLISTID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_LXE_WL_STRUCT 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_LXE_WL_STRUCT 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_LXE_WL_STRUCT INTO WA_LXE_WL_STRUCT.


*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 LXELA, internal->external for field TARG_LANG
CALL FUNCTION 'CONVERSION_EXIT_LXELA_OUTPUT'
  EXPORTING
    input =                      WA_LXE_WL_STRUCT-TARG_LANG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LXE_WL_STRUCT-TARG_LANG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit LXELA, internal->external for field ORIG_LANG
CALL FUNCTION 'CONVERSION_EXIT_LXELA_OUTPUT'
  EXPORTING
    input =                      WA_LXE_WL_STRUCT-ORIG_LANG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LXE_WL_STRUCT-ORIG_LANG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit LXELA, internal->external for field SOUR_LANG
CALL FUNCTION 'CONVERSION_EXIT_LXELA_OUTPUT'
  EXPORTING
    input =                      WA_LXE_WL_STRUCT-SOUR_LANG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_LXE_WL_STRUCT-SOUR_LANG.
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_LXE_WL_STRUCT_STR, 
TARG_LANG TYPE STRING,
CUSTMNR TYPE STRING,
OBJTYPE TYPE STRING,
OBJNAME TYPE STRING,
DOMATYP TYPE STRING,
DOMANAM TYPE STRING,
COLLTYP TYPE STRING,
COLLNAM TYPE STRING,
ORIG_LANG TYPE STRING,
SOUR_LANG TYPE STRING,
WLISTID TYPE STRING,
STATWKL TYPE STRING,
STATDRV TYPE STRING,
STATTRN TYPE STRING,
CNTTOT TYPE STRING,
CNTNEW TYPE STRING,
CNTMOD TYPE STRING,
CNTAVL TYPE STRING,
UNAME TYPE STRING,
UDATE TYPE STRING,
UTIME TYPE STRING,
RESRVID TYPE STRING,
STATRSV TYPE STRING,
LCOUNT TYPE STRING,
WORKLIST TYPE STRING,
TRNSVECTOR TYPE STRING,
TABNAME TYPE STRING,
TABKEY TYPE STRING,
NODE_ID TYPE STRING,
NODE_FID TYPE STRING,
NODE_TYPE TYPE STRING,
NODE_STATUS TYPE STRING,
NODE_ADDIT TYPE STRING,
LOCAL_SAVE_FOUND TYPE STRING,
OBJTEXT TYPE STRING,
NODE_MARKED TYPE STRING,
NODE_TSCON_MARKED TYPE STRING,
TMAS_WWC TYPE STRING,
TMAS_TOT TYPE STRING,
TMAS_AVAILABLE TYPE STRING,
TSCON_NOT_EXPORTABLE TYPE STRING,
TSCON_SUM_STATTRN_N TYPE STRING,
TSCON_SUM_STATTRN_M TYPE STRING,END OF T_EKKO_STR.
DATA: WA_LXE_WL_STRUCT_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_LXE_WL_STRUCT_STR-TARG_LANG sy-vline 
WA_LXE_WL_STRUCT_STR-CUSTMNR sy-vline 
WA_LXE_WL_STRUCT_STR-OBJTYPE sy-vline 
WA_LXE_WL_STRUCT_STR-OBJNAME sy-vline 
WA_LXE_WL_STRUCT_STR-DOMATYP sy-vline 
WA_LXE_WL_STRUCT_STR-DOMANAM sy-vline 
WA_LXE_WL_STRUCT_STR-COLLTYP sy-vline 
WA_LXE_WL_STRUCT_STR-COLLNAM sy-vline 
WA_LXE_WL_STRUCT_STR-ORIG_LANG sy-vline 
WA_LXE_WL_STRUCT_STR-SOUR_LANG sy-vline 
WA_LXE_WL_STRUCT_STR-WLISTID sy-vline 
WA_LXE_WL_STRUCT_STR-STATWKL sy-vline 
WA_LXE_WL_STRUCT_STR-STATDRV sy-vline 
WA_LXE_WL_STRUCT_STR-STATTRN sy-vline 
WA_LXE_WL_STRUCT_STR-CNTTOT sy-vline 
WA_LXE_WL_STRUCT_STR-CNTNEW sy-vline 
WA_LXE_WL_STRUCT_STR-CNTMOD sy-vline 
WA_LXE_WL_STRUCT_STR-CNTAVL sy-vline 
WA_LXE_WL_STRUCT_STR-UNAME sy-vline 
WA_LXE_WL_STRUCT_STR-UDATE sy-vline 
WA_LXE_WL_STRUCT_STR-UTIME sy-vline 
WA_LXE_WL_STRUCT_STR-RESRVID sy-vline 
WA_LXE_WL_STRUCT_STR-STATRSV sy-vline 
WA_LXE_WL_STRUCT_STR-LCOUNT sy-vline 
WA_LXE_WL_STRUCT_STR-WORKLIST sy-vline 
WA_LXE_WL_STRUCT_STR-TRNSVECTOR sy-vline 
WA_LXE_WL_STRUCT_STR-TABNAME sy-vline 
WA_LXE_WL_STRUCT_STR-TABKEY sy-vline 
WA_LXE_WL_STRUCT_STR-NODE_ID sy-vline 
WA_LXE_WL_STRUCT_STR-NODE_FID sy-vline 
WA_LXE_WL_STRUCT_STR-NODE_TYPE sy-vline 
WA_LXE_WL_STRUCT_STR-NODE_STATUS sy-vline 
WA_LXE_WL_STRUCT_STR-NODE_ADDIT sy-vline 
WA_LXE_WL_STRUCT_STR-LOCAL_SAVE_FOUND sy-vline 
WA_LXE_WL_STRUCT_STR-OBJTEXT sy-vline 
WA_LXE_WL_STRUCT_STR-NODE_MARKED sy-vline 
WA_LXE_WL_STRUCT_STR-NODE_TSCON_MARKED sy-vline 
WA_LXE_WL_STRUCT_STR-TMAS_WWC sy-vline 
WA_LXE_WL_STRUCT_STR-TMAS_TOT sy-vline 
WA_LXE_WL_STRUCT_STR-TMAS_AVAILABLE sy-vline 
WA_LXE_WL_STRUCT_STR-TSCON_NOT_EXPORTABLE sy-vline 
WA_LXE_WL_STRUCT_STR-TSCON_SUM_STATTRN_N sy-vline 
WA_LXE_WL_STRUCT_STR-TSCON_SUM_STATTRN_M sy-vline      INTO ld_text SEPARATED BY SPACE.

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