ABAP Select data from SAP table WLBWDETAGR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WLBWDETAGR
*  INTO TABLE @DATA(IT_WLBWDETAGR2).
*--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_WLBWDETAGR INDEX 1 INTO DATA(WA_WLBWDETAGR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WLBWDETAGR>-INFOCUBE = 1.
<WLBWDETAGR>-AGGRCUBE = 1.
<WLBWDETAGR>-NRAGGR = 1.
<WLBWDETAGR>-AGGRTOTAL = 1.
<WLBWDETAGR>-CHANGEMODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WLBWDETAGR-TIMEROLL, sy-vline,
  WA_WLBWDETAGR-PCTTIROLL, sy-vline,
  WA_WLBWDETAGR-AVGTIROLL, sy-vline,
  WA_WLBWDETAGR-RECROLL, sy-vline,
  WA_WLBWDETAGR-NRAGRROLL, sy-vline,
  WA_WLBWDETAGR-TIMENEW, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WLBWDETAGR 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_WLBWDETAGR 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_WLBWDETAGR INTO WA_WLBWDETAGR.


*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_WLBWDETAGR_STR, 
INFOCUBE TYPE STRING,
AGGRCUBE TYPE STRING,
NRAGGR TYPE STRING,
AGGRTOTAL TYPE STRING,
CHANGEMODE TYPE STRING,
TIMEROLL TYPE STRING,
PCTTIROLL TYPE STRING,
AVGTIROLL TYPE STRING,
RECROLL TYPE STRING,
NRAGRROLL TYPE STRING,
TIMENEW TYPE STRING,
PCTTINEW TYPE STRING,
AVGTINEW TYPE STRING,
RECNEW TYPE STRING,
NRAGRNEW TYPE STRING,
TIMEDELTA TYPE STRING,
PCTTIDELTA TYPE STRING,
AVGTIDELTA TYPE STRING,
RECDELTA TYPE STRING,
NRAGRDELTA TYPE STRING,
AGRTIMTOT TYPE STRING,
AGAVTIMTOT TYPE STRING,
TIMEREAD TYPE STRING,
PCTTIMREAD TYPE STRING,
AVGTIMREAD TYPE STRING,
TIMEINSERT TYPE STRING,
PCTTIMINST TYPE STRING,
AVGTIMINST TYPE STRING,
TIMEINDEX TYPE STRING,
PCTTIMINDX TYPE STRING,
AVGTIMINDX TYPE STRING,
TIMEDBANLY TYPE STRING,
PCTTIMANLY TYPE STRING,
AVGTIMANLY TYPE STRING,
TIMECONDNS TYPE STRING,
PCTTIMCOND TYPE STRING,
AVGTIMCOND TYPE STRING,
REC_READ TYPE STRING,
AVGRECREAD TYPE STRING,
AVGRDTIREC TYPE STRING,
REC_INSERT TYPE STRING,
AVGRECINS TYPE STRING,
AVGINSTIRC TYPE STRING,
NRRECREINS TYPE STRING,
STARTTIME TYPE STRING,
DISPLEVEL1 TYPE STRING,
DISPLEVEL2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WLBWDETAGR_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_WLBWDETAGR_STR-INFOCUBE sy-vline 
WA_WLBWDETAGR_STR-AGGRCUBE sy-vline 
WA_WLBWDETAGR_STR-NRAGGR sy-vline 
WA_WLBWDETAGR_STR-AGGRTOTAL sy-vline 
WA_WLBWDETAGR_STR-CHANGEMODE sy-vline 
WA_WLBWDETAGR_STR-TIMEROLL sy-vline 
WA_WLBWDETAGR_STR-PCTTIROLL sy-vline 
WA_WLBWDETAGR_STR-AVGTIROLL sy-vline 
WA_WLBWDETAGR_STR-RECROLL sy-vline 
WA_WLBWDETAGR_STR-NRAGRROLL sy-vline 
WA_WLBWDETAGR_STR-TIMENEW sy-vline 
WA_WLBWDETAGR_STR-PCTTINEW sy-vline 
WA_WLBWDETAGR_STR-AVGTINEW sy-vline 
WA_WLBWDETAGR_STR-RECNEW sy-vline 
WA_WLBWDETAGR_STR-NRAGRNEW sy-vline 
WA_WLBWDETAGR_STR-TIMEDELTA sy-vline 
WA_WLBWDETAGR_STR-PCTTIDELTA sy-vline 
WA_WLBWDETAGR_STR-AVGTIDELTA sy-vline 
WA_WLBWDETAGR_STR-RECDELTA sy-vline 
WA_WLBWDETAGR_STR-NRAGRDELTA sy-vline 
WA_WLBWDETAGR_STR-AGRTIMTOT sy-vline 
WA_WLBWDETAGR_STR-AGAVTIMTOT sy-vline 
WA_WLBWDETAGR_STR-TIMEREAD sy-vline 
WA_WLBWDETAGR_STR-PCTTIMREAD sy-vline 
WA_WLBWDETAGR_STR-AVGTIMREAD sy-vline 
WA_WLBWDETAGR_STR-TIMEINSERT sy-vline 
WA_WLBWDETAGR_STR-PCTTIMINST sy-vline 
WA_WLBWDETAGR_STR-AVGTIMINST sy-vline 
WA_WLBWDETAGR_STR-TIMEINDEX sy-vline 
WA_WLBWDETAGR_STR-PCTTIMINDX sy-vline 
WA_WLBWDETAGR_STR-AVGTIMINDX sy-vline 
WA_WLBWDETAGR_STR-TIMEDBANLY sy-vline 
WA_WLBWDETAGR_STR-PCTTIMANLY sy-vline 
WA_WLBWDETAGR_STR-AVGTIMANLY sy-vline 
WA_WLBWDETAGR_STR-TIMECONDNS sy-vline 
WA_WLBWDETAGR_STR-PCTTIMCOND sy-vline 
WA_WLBWDETAGR_STR-AVGTIMCOND sy-vline 
WA_WLBWDETAGR_STR-REC_READ sy-vline 
WA_WLBWDETAGR_STR-AVGRECREAD sy-vline 
WA_WLBWDETAGR_STR-AVGRDTIREC sy-vline 
WA_WLBWDETAGR_STR-REC_INSERT sy-vline 
WA_WLBWDETAGR_STR-AVGRECINS sy-vline 
WA_WLBWDETAGR_STR-AVGINSTIRC sy-vline 
WA_WLBWDETAGR_STR-NRRECREINS sy-vline 
WA_WLBWDETAGR_STR-STARTTIME sy-vline 
WA_WLBWDETAGR_STR-DISPLEVEL1 sy-vline 
WA_WLBWDETAGR_STR-DISPLEVEL2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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