ABAP Select data from SAP table WLBWEXIS0 into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP WLBWEXIS0 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 WLBWEXIS0. 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 WLBWEXIS0 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_WLBWEXIS0 TYPE STANDARD TABLE OF WLBWEXIS0,
      WA_WLBWEXIS0 TYPE WLBWEXIS0,
      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: <WLBWEXIS0> TYPE WLBWEXIS0.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_WLBWEXIS0.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM WLBWEXIS0
  INTO TABLE IT_WLBWEXIS0.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WLBWEXIS0
*  INTO TABLE @DATA(IT_WLBWEXIS02).
*--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_WLBWEXIS0 INDEX 1 INTO DATA(WA_WLBWEXIS02).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_WLBWEXIS0 ASSIGNING <WLBWEXIS0>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WLBWEXIS0>-INFOSOURCE = 1.
<WLBWEXIS0>-TARGET = 1.
<WLBWEXIS0>-NRREQUESTS = 1.
<WLBWEXIS0>-UPLD_PARAL = 1.
<WLBWEXIS0>-TIMETOTAL = 1.

ENDLOOP.

LOOP AT IT_WLBWEXIS0 INTO WA_WLBWEXIS0.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WLBWEXIS0-PCTTIMSRC, sy-vline,
  WA_WLBWEXIS0-PCTTIMTRF, sy-vline,
  WA_WLBWEXIS0-PCTTIMPSA, sy-vline,
  WA_WLBWEXIS0-PCTTIMUPD, sy-vline,
  WA_WLBWEXIS0-PCTTIMTGT, sy-vline,
  WA_WLBWEXIS0-NRRCRDTGT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WLBWEXIS0 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_WLBWEXIS0 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_WLBWEXIS0 INTO WA_WLBWEXIS0.


*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_WLBWEXIS0_STR, 
INFOSOURCE TYPE STRING,
TARGET TYPE STRING,
NRREQUESTS TYPE STRING,
UPLD_PARAL TYPE STRING,
TIMETOTAL TYPE STRING,
PCTTIMSRC TYPE STRING,
PCTTIMTRF TYPE STRING,
PCTTIMPSA TYPE STRING,
PCTTIMUPD TYPE STRING,
PCTTIMTGT TYPE STRING,
NRRCRDTGT TYPE STRING,
TIMSOURCE TYPE STRING,
TIMTRANSF TYPE STRING,
TIMEPSA TYPE STRING,
TIMUPDATE TYPE STRING,
TIMTARGET TYPE STRING,
LINECOLOR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WLBWEXIS0_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_WLBWEXIS0_STR-INFOSOURCE sy-vline 
WA_WLBWEXIS0_STR-TARGET sy-vline 
WA_WLBWEXIS0_STR-NRREQUESTS sy-vline 
WA_WLBWEXIS0_STR-UPLD_PARAL sy-vline 
WA_WLBWEXIS0_STR-TIMETOTAL sy-vline 
WA_WLBWEXIS0_STR-PCTTIMSRC sy-vline 
WA_WLBWEXIS0_STR-PCTTIMTRF sy-vline 
WA_WLBWEXIS0_STR-PCTTIMPSA sy-vline 
WA_WLBWEXIS0_STR-PCTTIMUPD sy-vline 
WA_WLBWEXIS0_STR-PCTTIMTGT sy-vline 
WA_WLBWEXIS0_STR-NRRCRDTGT sy-vline 
WA_WLBWEXIS0_STR-TIMSOURCE sy-vline 
WA_WLBWEXIS0_STR-TIMTRANSF sy-vline 
WA_WLBWEXIS0_STR-TIMEPSA sy-vline 
WA_WLBWEXIS0_STR-TIMUPDATE sy-vline 
WA_WLBWEXIS0_STR-TIMTARGET sy-vline 
WA_WLBWEXIS0_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.