ABAP Select data from SAP table WLBIDTPSY0 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WLBIDTPSY0 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 WLBIDTPSY0. 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 WLBIDTPSY0 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_WLBIDTPSY0 TYPE STANDARD TABLE OF WLBIDTPSY0,
      WA_WLBIDTPSY0 TYPE WLBIDTPSY0,
      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: <WLBIDTPSY0> TYPE WLBIDTPSY0.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_WLBIDTPSY0.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM WLBIDTPSY0
  INTO TABLE IT_WLBIDTPSY0.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WLBIDTPSY0
*  INTO TABLE @DATA(IT_WLBIDTPSY02).
*--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_WLBIDTPSY0 INDEX 1 INTO DATA(WA_WLBIDTPSY02).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_WLBIDTPSY0 ASSIGNING <WLBIDTPSY0>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WLBIDTPSY0>-SRCSYSTEM = 1.
<WLBIDTPSY0>-NRSOURCES = 1.
<WLBIDTPSY0>-NRTARGETS = 1.
<WLBIDTPSY0>-NRREQUESTS = 1.
<WLBIDTPSY0>-TIMETOTAL = 1.

ENDLOOP.

LOOP AT IT_WLBIDTPSY0 INTO WA_WLBIDTPSY0.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WLBIDTPSY0-NUMPACKAGE, sy-vline,
  WA_WLBIDTPSY0-TIMETOTCUM, sy-vline,
  WA_WLBIDTPSY0-TIMESRCPCT, sy-vline,
  WA_WLBIDTPSY0-TIMEERFPCT, sy-vline,
  WA_WLBIDTPSY0-TIMETRFPCT, sy-vline,
  WA_WLBIDTPSY0-TIMETGTPCT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WLBIDTPSY0 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_WLBIDTPSY0 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_WLBIDTPSY0 INTO WA_WLBIDTPSY0.


*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_WLBIDTPSY0_STR, 
SRCSYSTEM TYPE STRING,
NRSOURCES TYPE STRING,
NRTARGETS TYPE STRING,
NRREQUESTS TYPE STRING,
TIMETOTAL TYPE STRING,
NUMPACKAGE TYPE STRING,
TIMETOTCUM TYPE STRING,
TIMESRCPCT TYPE STRING,
TIMEERFPCT TYPE STRING,
TIMETRFPCT TYPE STRING,
TIMETGTPCT TYPE STRING,
TIMESRC TYPE STRING,
TIMEERRF TYPE STRING,
TIMETRFN TYPE STRING,
TIMETGT TYPE STRING,
RECSSRCPH TYPE STRING,
RECSERFPH TYPE STRING,
RECSTRFPH TYPE STRING,
RECSTGTPH TYPE STRING,
RECS_MAX TYPE STRING,
SIZE_MAX TYPE STRING,
RECSSRC TYPE STRING,
RECSSRCAVG TYPE STRING,
RECSERRF_S TYPE STRING,
RCSERFSAVG TYPE STRING,
RECSERRF_F TYPE STRING,
RCSERFFAVG TYPE STRING,
RECSTRFN_S TYPE STRING,
RCSTRFSAVG TYPE STRING,
RECSTRFN_F TYPE STRING,
RCSTRFFAVG TYPE STRING,
RECSTGT_S TYPE STRING,
RCSTGTSAVG TYPE STRING,
RECSTGT_F TYPE STRING,
RCSTGTFAVG TYPE STRING,
SIZESRC TYPE STRING,
SIZESRCAVG TYPE STRING,
SIZEERRF_S TYPE STRING,
SIZERFSAVG TYPE STRING,
SIZEERRF_F TYPE STRING,
SIZERFFAVG TYPE STRING,
SIZETRFN_S TYPE STRING,
SIZTRFSAVG TYPE STRING,
SIZETRFN_F TYPE STRING,
SIZTRFFAVG TYPE STRING,
SIZETGT_S TYPE STRING,
SIZTGTSAVG TYPE STRING,
LINECOLOR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WLBIDTPSY0_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_WLBIDTPSY0_STR-SRCSYSTEM sy-vline 
WA_WLBIDTPSY0_STR-NRSOURCES sy-vline 
WA_WLBIDTPSY0_STR-NRTARGETS sy-vline 
WA_WLBIDTPSY0_STR-NRREQUESTS sy-vline 
WA_WLBIDTPSY0_STR-TIMETOTAL sy-vline 
WA_WLBIDTPSY0_STR-NUMPACKAGE sy-vline 
WA_WLBIDTPSY0_STR-TIMETOTCUM sy-vline 
WA_WLBIDTPSY0_STR-TIMESRCPCT sy-vline 
WA_WLBIDTPSY0_STR-TIMEERFPCT sy-vline 
WA_WLBIDTPSY0_STR-TIMETRFPCT sy-vline 
WA_WLBIDTPSY0_STR-TIMETGTPCT sy-vline 
WA_WLBIDTPSY0_STR-TIMESRC sy-vline 
WA_WLBIDTPSY0_STR-TIMEERRF sy-vline 
WA_WLBIDTPSY0_STR-TIMETRFN sy-vline 
WA_WLBIDTPSY0_STR-TIMETGT sy-vline 
WA_WLBIDTPSY0_STR-RECSSRCPH sy-vline 
WA_WLBIDTPSY0_STR-RECSERFPH sy-vline 
WA_WLBIDTPSY0_STR-RECSTRFPH sy-vline 
WA_WLBIDTPSY0_STR-RECSTGTPH sy-vline 
WA_WLBIDTPSY0_STR-RECS_MAX sy-vline 
WA_WLBIDTPSY0_STR-SIZE_MAX sy-vline 
WA_WLBIDTPSY0_STR-RECSSRC sy-vline 
WA_WLBIDTPSY0_STR-RECSSRCAVG sy-vline 
WA_WLBIDTPSY0_STR-RECSERRF_S sy-vline 
WA_WLBIDTPSY0_STR-RCSERFSAVG sy-vline 
WA_WLBIDTPSY0_STR-RECSERRF_F sy-vline 
WA_WLBIDTPSY0_STR-RCSERFFAVG sy-vline 
WA_WLBIDTPSY0_STR-RECSTRFN_S sy-vline 
WA_WLBIDTPSY0_STR-RCSTRFSAVG sy-vline 
WA_WLBIDTPSY0_STR-RECSTRFN_F sy-vline 
WA_WLBIDTPSY0_STR-RCSTRFFAVG sy-vline 
WA_WLBIDTPSY0_STR-RECSTGT_S sy-vline 
WA_WLBIDTPSY0_STR-RCSTGTSAVG sy-vline 
WA_WLBIDTPSY0_STR-RECSTGT_F sy-vline 
WA_WLBIDTPSY0_STR-RCSTGTFAVG sy-vline 
WA_WLBIDTPSY0_STR-SIZESRC sy-vline 
WA_WLBIDTPSY0_STR-SIZESRCAVG sy-vline 
WA_WLBIDTPSY0_STR-SIZEERRF_S sy-vline 
WA_WLBIDTPSY0_STR-SIZERFSAVG sy-vline 
WA_WLBIDTPSY0_STR-SIZEERRF_F sy-vline 
WA_WLBIDTPSY0_STR-SIZERFFAVG sy-vline 
WA_WLBIDTPSY0_STR-SIZETRFN_S sy-vline 
WA_WLBIDTPSY0_STR-SIZTRFSAVG sy-vline 
WA_WLBIDTPSY0_STR-SIZETRFN_F sy-vline 
WA_WLBIDTPSY0_STR-SIZTRFFAVG sy-vline 
WA_WLBIDTPSY0_STR-SIZETGT_S sy-vline 
WA_WLBIDTPSY0_STR-SIZTGTSAVG sy-vline 
WA_WLBIDTPSY0_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.