ABAP Select data from SAP table WLBWHTLREP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WLBWHTLREP
*  INTO TABLE @DATA(IT_WLBWHTLREP2).
*--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_WLBWHTLREP INDEX 1 INTO DATA(WA_WLBWHTLREP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WLBWHTLREP>-INFOCUBE = 1.
<WLBWHTLREP>-QUERYID = 1.
<WLBWHTLREP>-TIMETOTAL = 1.
<WLBWHTLREP>-TIMEOLAPIN = 1.
<WLBWHTLREP>-PCTTIMOLIN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WLBWHTLREP-TIMEOLAP, sy-vline,
  WA_WLBWHTLREP-PCTTIMOLAP, sy-vline,
  WA_WLBWHTLREP-TIMEDB, sy-vline,
  WA_WLBWHTLREP-PCTTIMEDB, sy-vline,
  WA_WLBWHTLREP-TIMECLIENT, sy-vline,
  WA_WLBWHTLREP-PCTTIMECLI, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WLBWHTLREP 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_WLBWHTLREP 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_WLBWHTLREP INTO WA_WLBWHTLREP.


*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_WLBWHTLREP_STR, 
INFOCUBE TYPE STRING,
QUERYID TYPE STRING,
TIMETOTAL TYPE STRING,
TIMEOLAPIN TYPE STRING,
PCTTIMOLIN TYPE STRING,
TIMEOLAP TYPE STRING,
PCTTIMOLAP TYPE STRING,
TIMEDB TYPE STRING,
PCTTIMEDB TYPE STRING,
TIMECLIENT TYPE STRING,
PCTTIMECLI TYPE STRING,
TIMEMSTDAT TYPE STRING,
PCTTIMMSDA TYPE STRING,
DBSEL TYPE STRING,
DBTRANS TYPE STRING,
DBTRANSSEL TYPE STRING,
NUMCELLS TYPE STRING,
NUMCELTRNS TYPE STRING,
NUMRANGES TYPE STRING,
NUMRANGCEL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WLBWHTLREP_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_WLBWHTLREP_STR-INFOCUBE sy-vline 
WA_WLBWHTLREP_STR-QUERYID sy-vline 
WA_WLBWHTLREP_STR-TIMETOTAL sy-vline 
WA_WLBWHTLREP_STR-TIMEOLAPIN sy-vline 
WA_WLBWHTLREP_STR-PCTTIMOLIN sy-vline 
WA_WLBWHTLREP_STR-TIMEOLAP sy-vline 
WA_WLBWHTLREP_STR-PCTTIMOLAP sy-vline 
WA_WLBWHTLREP_STR-TIMEDB sy-vline 
WA_WLBWHTLREP_STR-PCTTIMEDB sy-vline 
WA_WLBWHTLREP_STR-TIMECLIENT sy-vline 
WA_WLBWHTLREP_STR-PCTTIMECLI sy-vline 
WA_WLBWHTLREP_STR-TIMEMSTDAT sy-vline 
WA_WLBWHTLREP_STR-PCTTIMMSDA sy-vline 
WA_WLBWHTLREP_STR-DBSEL sy-vline 
WA_WLBWHTLREP_STR-DBTRANS sy-vline 
WA_WLBWHTLREP_STR-DBTRANSSEL sy-vline 
WA_WLBWHTLREP_STR-NUMCELLS sy-vline 
WA_WLBWHTLREP_STR-NUMCELTRNS sy-vline 
WA_WLBWHTLREP_STR-NUMRANGES sy-vline 
WA_WLBWHTLREP_STR-NUMRANGCEL sy-vline      INTO ld_text SEPARATED BY SPACE.

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