ABAP Select data from SAP table WLBWEXTGT3 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WLBWEXTGT3 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 WLBWEXTGT3. 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 WLBWEXTGT3 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_WLBWEXTGT3 TYPE STANDARD TABLE OF WLBWEXTGT3,
      WA_WLBWEXTGT3 TYPE WLBWEXTGT3,
      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: <WLBWEXTGT3> TYPE WLBWEXTGT3.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_WLBWEXTGT3.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM WLBWEXTGT3
  INTO TABLE IT_WLBWEXTGT3.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WLBWEXTGT3
*  INTO TABLE @DATA(IT_WLBWEXTGT32).
*--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_WLBWEXTGT3 INDEX 1 INTO DATA(WA_WLBWEXTGT32).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_WLBWEXTGT3 ASSIGNING <WLBWEXTGT3>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WLBWEXTGT3>-TARGET = 1.
<WLBWEXTGT3>-NRISOURCES = 1.
<WLBWEXTGT3>-NRREQUESTS = 1.
<WLBWEXTGT3>-TIMETOTAL = 1.
<WLBWEXTGT3>-AVGTOTREQ = 1.

ENDLOOP.

LOOP AT IT_WLBWEXTGT3 INTO WA_WLBWEXTGT3.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WLBWEXTGT3-RECREADPH, sy-vline,
  WA_WLBWEXTGT3-RECWRITPH, sy-vline,
  WA_WLBWEXTGT3-TIMSOURCE, sy-vline,
  WA_WLBWEXTGT3-PCTTIMSRC, sy-vline,
  WA_WLBWEXTGT3-AVGTIMSRC, sy-vline,
  WA_WLBWEXTGT3-NRRCRDSRC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WLBWEXTGT3 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_WLBWEXTGT3 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_WLBWEXTGT3 INTO WA_WLBWEXTGT3.


*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_WLBWEXTGT3_STR, 
TARGET TYPE STRING,
NRISOURCES TYPE STRING,
NRREQUESTS TYPE STRING,
TIMETOTAL TYPE STRING,
AVGTOTREQ TYPE STRING,
RECREADPH TYPE STRING,
RECWRITPH TYPE STRING,
TIMSOURCE TYPE STRING,
PCTTIMSRC TYPE STRING,
AVGTIMSRC TYPE STRING,
NRRCRDSRC TYPE STRING,
AVRCRDSRC TYPE STRING,
NRCRDSCPH TYPE STRING,
TIMRDSCMS TYPE STRING,
TIMTRANSF TYPE STRING,
PCTTIMTRF TYPE STRING,
AVGTIMTRF TYPE STRING,
NRRCRDTRF TYPE STRING,
AVRCRDTRF TYPE STRING,
NRCRDTFPH TYPE STRING,
TIMRDTFMS TYPE STRING,
TIMEPSA TYPE STRING,
PCTTIMPSA TYPE STRING,
AVGTIMPSA TYPE STRING,
NRRCRDPSA TYPE STRING,
AVRCRDPSA TYPE STRING,
NRCRDPSPH TYPE STRING,
TIMRDPSMS TYPE STRING,
TIMUPDATE TYPE STRING,
PCTTIMUPD TYPE STRING,
AVGTIMUPD TYPE STRING,
NRRCRDUPD TYPE STRING,
AVRCRDUPD TYPE STRING,
NRCRDUPPH TYPE STRING,
TIMRDUPMS TYPE STRING,
TIMTARGET TYPE STRING,
PCTTIMTGT TYPE STRING,
AVGTIMTGT TYPE STRING,
NRRCRDTGT TYPE STRING,
AVRCRDTGT TYPE STRING,
NRCRDTGPH TYPE STRING,
TIMRDTGMS TYPE STRING,
LINECOLOR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WLBWEXTGT3_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_WLBWEXTGT3_STR-TARGET sy-vline 
WA_WLBWEXTGT3_STR-NRISOURCES sy-vline 
WA_WLBWEXTGT3_STR-NRREQUESTS sy-vline 
WA_WLBWEXTGT3_STR-TIMETOTAL sy-vline 
WA_WLBWEXTGT3_STR-AVGTOTREQ sy-vline 
WA_WLBWEXTGT3_STR-RECREADPH sy-vline 
WA_WLBWEXTGT3_STR-RECWRITPH sy-vline 
WA_WLBWEXTGT3_STR-TIMSOURCE sy-vline 
WA_WLBWEXTGT3_STR-PCTTIMSRC sy-vline 
WA_WLBWEXTGT3_STR-AVGTIMSRC sy-vline 
WA_WLBWEXTGT3_STR-NRRCRDSRC sy-vline 
WA_WLBWEXTGT3_STR-AVRCRDSRC sy-vline 
WA_WLBWEXTGT3_STR-NRCRDSCPH sy-vline 
WA_WLBWEXTGT3_STR-TIMRDSCMS sy-vline 
WA_WLBWEXTGT3_STR-TIMTRANSF sy-vline 
WA_WLBWEXTGT3_STR-PCTTIMTRF sy-vline 
WA_WLBWEXTGT3_STR-AVGTIMTRF sy-vline 
WA_WLBWEXTGT3_STR-NRRCRDTRF sy-vline 
WA_WLBWEXTGT3_STR-AVRCRDTRF sy-vline 
WA_WLBWEXTGT3_STR-NRCRDTFPH sy-vline 
WA_WLBWEXTGT3_STR-TIMRDTFMS sy-vline 
WA_WLBWEXTGT3_STR-TIMEPSA sy-vline 
WA_WLBWEXTGT3_STR-PCTTIMPSA sy-vline 
WA_WLBWEXTGT3_STR-AVGTIMPSA sy-vline 
WA_WLBWEXTGT3_STR-NRRCRDPSA sy-vline 
WA_WLBWEXTGT3_STR-AVRCRDPSA sy-vline 
WA_WLBWEXTGT3_STR-NRCRDPSPH sy-vline 
WA_WLBWEXTGT3_STR-TIMRDPSMS sy-vline 
WA_WLBWEXTGT3_STR-TIMUPDATE sy-vline 
WA_WLBWEXTGT3_STR-PCTTIMUPD sy-vline 
WA_WLBWEXTGT3_STR-AVGTIMUPD sy-vline 
WA_WLBWEXTGT3_STR-NRRCRDUPD sy-vline 
WA_WLBWEXTGT3_STR-AVRCRDUPD sy-vline 
WA_WLBWEXTGT3_STR-NRCRDUPPH sy-vline 
WA_WLBWEXTGT3_STR-TIMRDUPMS sy-vline 
WA_WLBWEXTGT3_STR-TIMTARGET sy-vline 
WA_WLBWEXTGT3_STR-PCTTIMTGT sy-vline 
WA_WLBWEXTGT3_STR-AVGTIMTGT sy-vline 
WA_WLBWEXTGT3_STR-NRRCRDTGT sy-vline 
WA_WLBWEXTGT3_STR-AVRCRDTGT sy-vline 
WA_WLBWEXTGT3_STR-NRCRDTGPH sy-vline 
WA_WLBWEXTGT3_STR-TIMRDTGMS sy-vline 
WA_WLBWEXTGT3_STR-LINECOLOR sy-vline      INTO ld_text SEPARATED BY SPACE.

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