ABAP Select data from SAP table WLBWEXUPL0 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WLBWEXUPL0 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 WLBWEXUPL0. 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 WLBWEXUPL0 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_WLBWEXUPL0 TYPE STANDARD TABLE OF WLBWEXUPL0,
      WA_WLBWEXUPL0 TYPE WLBWEXUPL0,
      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: <WLBWEXUPL0> TYPE WLBWEXUPL0.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_WLBWEXUPL0.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM WLBWEXUPL0
  INTO TABLE IT_WLBWEXUPL0.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WLBWEXUPL0
*  INTO TABLE @DATA(IT_WLBWEXUPL02).
*--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_WLBWEXUPL0 INDEX 1 INTO DATA(WA_WLBWEXUPL02).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_WLBWEXUPL0 ASSIGNING <WLBWEXUPL0>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WLBWEXUPL0>-INFOSOURCE = 1.
<WLBWEXUPL0>-TARGET = 1.
<WLBWEXUPL0>-NRREQUESTS = 1.
<WLBWEXUPL0>-REQUESTID = 1.
<WLBWEXUPL0>-ACTION = 1.

ENDLOOP.

LOOP AT IT_WLBWEXUPL0 INTO WA_WLBWEXUPL0.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WLBWEXUPL0-UPLD_PARAL, sy-vline,
  WA_WLBWEXUPL0-RECREADPH, sy-vline,
  WA_WLBWEXUPL0-RECWRITPH, sy-vline,
  WA_WLBWEXUPL0-TIMSOURCE, sy-vline,
  WA_WLBWEXUPL0-TIMSOURC3, sy-vline,
  WA_WLBWEXUPL0-PCTTIMSRC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WLBWEXUPL0 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_WLBWEXUPL0 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_WLBWEXUPL0 INTO WA_WLBWEXUPL0.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_WLBWEXUPL0_STR, 
INFOSOURCE TYPE STRING,
TARGET TYPE STRING,
NRREQUESTS TYPE STRING,
REQUESTID TYPE STRING,
ACTION TYPE STRING,
UPLD_PARAL TYPE STRING,
RECREADPH TYPE STRING,
RECWRITPH TYPE STRING,
TIMSOURCE TYPE STRING,
TIMSOURC3 TYPE STRING,
PCTTIMSRC TYPE STRING,
AVGTIMSRC TYPE STRING,
NRRCRDSRC TYPE STRING,
AVRCRDSRC TYPE STRING,
NRCRDSCPH TYPE STRING,
TIMRDSCMS TYPE STRING,
TIMTRANSF TYPE STRING,
TIMTRANS3 TYPE STRING,
PCTTIMTRF TYPE STRING,
AVGTIMTRF TYPE STRING,
NRRCRDTRF TYPE STRING,
AVRCRDTRF TYPE STRING,
NRCRDTFPH TYPE STRING,
TIMRDTFMS TYPE STRING,
TIMEPSA TYPE STRING,
TIMEPSA3 TYPE STRING,
PCTTIMPSA TYPE STRING,
AVGTIMPSA TYPE STRING,
NRRCRDPSA TYPE STRING,
AVRCRDPSA TYPE STRING,
NRCRDPSPH TYPE STRING,
TIMRDPSMS TYPE STRING,
TIMUPDATE TYPE STRING,
TIMUPDAT3 TYPE STRING,
PCTTIMUPD TYPE STRING,
AVGTIMUPD TYPE STRING,
NRRCRDUPD TYPE STRING,
AVRCRDUPD TYPE STRING,
NRCRDUPPH TYPE STRING,
TIMRDUPMS TYPE STRING,
TIMTARGET TYPE STRING,
TIMTARGT3 TYPE STRING,
PCTTIMTGT TYPE STRING,
AVGTIMTGT TYPE STRING,
NRRCRDTGT TYPE STRING,
AVRCRDTGT TYPE STRING,
NRCRDTGPH TYPE STRING,
TIMRDTGMS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WLBWEXUPL0_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_WLBWEXUPL0_STR-INFOSOURCE sy-vline 
WA_WLBWEXUPL0_STR-TARGET sy-vline 
WA_WLBWEXUPL0_STR-NRREQUESTS sy-vline 
WA_WLBWEXUPL0_STR-REQUESTID sy-vline 
WA_WLBWEXUPL0_STR-ACTION sy-vline 
WA_WLBWEXUPL0_STR-UPLD_PARAL sy-vline 
WA_WLBWEXUPL0_STR-RECREADPH sy-vline 
WA_WLBWEXUPL0_STR-RECWRITPH sy-vline 
WA_WLBWEXUPL0_STR-TIMSOURCE sy-vline 
WA_WLBWEXUPL0_STR-TIMSOURC3 sy-vline 
WA_WLBWEXUPL0_STR-PCTTIMSRC sy-vline 
WA_WLBWEXUPL0_STR-AVGTIMSRC sy-vline 
WA_WLBWEXUPL0_STR-NRRCRDSRC sy-vline 
WA_WLBWEXUPL0_STR-AVRCRDSRC sy-vline 
WA_WLBWEXUPL0_STR-NRCRDSCPH sy-vline 
WA_WLBWEXUPL0_STR-TIMRDSCMS sy-vline 
WA_WLBWEXUPL0_STR-TIMTRANSF sy-vline 
WA_WLBWEXUPL0_STR-TIMTRANS3 sy-vline 
WA_WLBWEXUPL0_STR-PCTTIMTRF sy-vline 
WA_WLBWEXUPL0_STR-AVGTIMTRF sy-vline 
WA_WLBWEXUPL0_STR-NRRCRDTRF sy-vline 
WA_WLBWEXUPL0_STR-AVRCRDTRF sy-vline 
WA_WLBWEXUPL0_STR-NRCRDTFPH sy-vline 
WA_WLBWEXUPL0_STR-TIMRDTFMS sy-vline 
WA_WLBWEXUPL0_STR-TIMEPSA sy-vline 
WA_WLBWEXUPL0_STR-TIMEPSA3 sy-vline 
WA_WLBWEXUPL0_STR-PCTTIMPSA sy-vline 
WA_WLBWEXUPL0_STR-AVGTIMPSA sy-vline 
WA_WLBWEXUPL0_STR-NRRCRDPSA sy-vline 
WA_WLBWEXUPL0_STR-AVRCRDPSA sy-vline 
WA_WLBWEXUPL0_STR-NRCRDPSPH sy-vline 
WA_WLBWEXUPL0_STR-TIMRDPSMS sy-vline 
WA_WLBWEXUPL0_STR-TIMUPDATE sy-vline 
WA_WLBWEXUPL0_STR-TIMUPDAT3 sy-vline 
WA_WLBWEXUPL0_STR-PCTTIMUPD sy-vline 
WA_WLBWEXUPL0_STR-AVGTIMUPD sy-vline 
WA_WLBWEXUPL0_STR-NRRCRDUPD sy-vline 
WA_WLBWEXUPL0_STR-AVRCRDUPD sy-vline 
WA_WLBWEXUPL0_STR-NRCRDUPPH sy-vline 
WA_WLBWEXUPL0_STR-TIMRDUPMS sy-vline 
WA_WLBWEXUPL0_STR-TIMTARGET sy-vline 
WA_WLBWEXUPL0_STR-TIMTARGT3 sy-vline 
WA_WLBWEXUPL0_STR-PCTTIMTGT sy-vline 
WA_WLBWEXUPL0_STR-AVGTIMTGT sy-vline 
WA_WLBWEXUPL0_STR-NRRCRDTGT sy-vline 
WA_WLBWEXUPL0_STR-AVRCRDTGT sy-vline 
WA_WLBWEXUPL0_STR-NRCRDTGPH sy-vline 
WA_WLBWEXUPL0_STR-TIMRDTGMS sy-vline      INTO ld_text SEPARATED BY SPACE.

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