ABAP Select data from SAP table WLC_JOB_STATISTICS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WLC_JOB_STATISTICS
*  INTO TABLE @DATA(IT_WLC_JOB_STATISTICS2).
*--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_WLC_JOB_STATISTICS INDEX 1 INTO DATA(WA_WLC_JOB_STATISTICS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WLC_JOB_STATISTICS>-JOB_NO = 1.
<WLC_JOB_STATISTICS>-PARALLEL_JOB_NO = 1.
<WLC_JOB_STATISTICS>-VARIANT = 1.
<WLC_JOB_STATISTICS>-WORKLOAD = 1.
<WLC_JOB_STATISTICS>-STATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WLC_JOB_STATISTICS-SUBMIT_RETURN, sy-vline,
  WA_WLC_JOB_STATISTICS-SUBRC, sy-vline,
  WA_WLC_JOB_STATISTICS-MSGID, sy-vline,
  WA_WLC_JOB_STATISTICS-MSGTY, sy-vline,
  WA_WLC_JOB_STATISTICS-MSGNO, sy-vline,
  WA_WLC_JOB_STATISTICS-MSGV1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WLC_JOB_STATISTICS 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_WLC_JOB_STATISTICS 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_WLC_JOB_STATISTICS INTO WA_WLC_JOB_STATISTICS.


*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_WLC_JOB_STATISTICS_STR, 
JOB_NO TYPE STRING,
PARALLEL_JOB_NO TYPE STRING,
VARIANT TYPE STRING,
WORKLOAD TYPE STRING,
STATE TYPE STRING,
SUBMIT_RETURN TYPE STRING,
SUBRC TYPE STRING,
MSGID TYPE STRING,
MSGTY TYPE STRING,
MSGNO TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,
TASKDEST TYPE STRING,
RFCMSG TYPE STRING,
TIME_STATISTICS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WLC_JOB_STATISTICS_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_WLC_JOB_STATISTICS_STR-JOB_NO sy-vline 
WA_WLC_JOB_STATISTICS_STR-PARALLEL_JOB_NO sy-vline 
WA_WLC_JOB_STATISTICS_STR-VARIANT sy-vline 
WA_WLC_JOB_STATISTICS_STR-WORKLOAD sy-vline 
WA_WLC_JOB_STATISTICS_STR-STATE sy-vline 
WA_WLC_JOB_STATISTICS_STR-SUBMIT_RETURN sy-vline 
WA_WLC_JOB_STATISTICS_STR-SUBRC sy-vline 
WA_WLC_JOB_STATISTICS_STR-MSGID sy-vline 
WA_WLC_JOB_STATISTICS_STR-MSGTY sy-vline 
WA_WLC_JOB_STATISTICS_STR-MSGNO sy-vline 
WA_WLC_JOB_STATISTICS_STR-MSGV1 sy-vline 
WA_WLC_JOB_STATISTICS_STR-MSGV2 sy-vline 
WA_WLC_JOB_STATISTICS_STR-MSGV3 sy-vline 
WA_WLC_JOB_STATISTICS_STR-MSGV4 sy-vline 
WA_WLC_JOB_STATISTICS_STR-TASKDEST sy-vline 
WA_WLC_JOB_STATISTICS_STR-RFCMSG sy-vline 
WA_WLC_JOB_STATISTICS_STR-TIME_STATISTICS sy-vline      INTO ld_text SEPARATED BY SPACE.

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