ABAP Select data from SAP table EWUCLSTAT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EWUCLSTAT
*  INTO TABLE @DATA(IT_EWUCLSTAT2).
*--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_EWUCLSTAT INDEX 1 INTO DATA(WA_EWUCLSTAT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EWUCLSTAT>-MANDT = 1.
<EWUCLSTAT>-PAKET = 1.
<EWUCLSTAT>-TABNAME = 1.
<EWUCLSTAT>-TASK_NUMB = 1.
<EWUCLSTAT>-PROGRAMM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EWUCLSTAT-CLU_RELID, sy-vline,
  WA_EWUCLSTAT-STATUS_PHS, sy-vline,
  WA_EWUCLSTAT-STATUS_TEC, sy-vline,
  WA_EWUCLSTAT-STATUS_LOG, sy-vline,
  WA_EWUCLSTAT-C_ERR_INT, sy-vline,
  WA_EWUCLSTAT-C_ERR_ENT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EWUCLSTAT 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_EWUCLSTAT 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_EWUCLSTAT INTO WA_EWUCLSTAT.


*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_EWUCLSTAT_STR, 
MANDT TYPE STRING,
PAKET TYPE STRING,
TABNAME TYPE STRING,
TASK_NUMB TYPE STRING,
PROGRAMM TYPE STRING,
CLU_RELID TYPE STRING,
STATUS_PHS TYPE STRING,
STATUS_TEC TYPE STRING,
STATUS_LOG TYPE STRING,
C_ERR_INT TYPE STRING,
C_ERR_ENT TYPE STRING,
COUNT_TOT TYPE STRING,
COUNT_READ TYPE STRING,
COUNT_UPDA TYPE STRING,
SIZE_UNCOM TYPE STRING,
SIZE_COMPR TYPE STRING,
SDATE TYPE STRING,
STIME TYPE STRING,
EDATE TYPE STRING,
ETIME TYPE STRING,
DTIME TYPE STRING,
PROTNAME TYPE STRING,
JOBNAME TYPE STRING,
JOBCOUNT TYPE STRING,
PRID TYPE STRING,
LIMIT_LOW TYPE STRING,
LIMIT_HIGH TYPE STRING,
LIMIT_REST TYPE STRING,
SUBTABFLG TYPE STRING,
PROCESSED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EWUCLSTAT_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_EWUCLSTAT_STR-MANDT sy-vline 
WA_EWUCLSTAT_STR-PAKET sy-vline 
WA_EWUCLSTAT_STR-TABNAME sy-vline 
WA_EWUCLSTAT_STR-TASK_NUMB sy-vline 
WA_EWUCLSTAT_STR-PROGRAMM sy-vline 
WA_EWUCLSTAT_STR-CLU_RELID sy-vline 
WA_EWUCLSTAT_STR-STATUS_PHS sy-vline 
WA_EWUCLSTAT_STR-STATUS_TEC sy-vline 
WA_EWUCLSTAT_STR-STATUS_LOG sy-vline 
WA_EWUCLSTAT_STR-C_ERR_INT sy-vline 
WA_EWUCLSTAT_STR-C_ERR_ENT sy-vline 
WA_EWUCLSTAT_STR-COUNT_TOT sy-vline 
WA_EWUCLSTAT_STR-COUNT_READ sy-vline 
WA_EWUCLSTAT_STR-COUNT_UPDA sy-vline 
WA_EWUCLSTAT_STR-SIZE_UNCOM sy-vline 
WA_EWUCLSTAT_STR-SIZE_COMPR sy-vline 
WA_EWUCLSTAT_STR-SDATE sy-vline 
WA_EWUCLSTAT_STR-STIME sy-vline 
WA_EWUCLSTAT_STR-EDATE sy-vline 
WA_EWUCLSTAT_STR-ETIME sy-vline 
WA_EWUCLSTAT_STR-DTIME sy-vline 
WA_EWUCLSTAT_STR-PROTNAME sy-vline 
WA_EWUCLSTAT_STR-JOBNAME sy-vline 
WA_EWUCLSTAT_STR-JOBCOUNT sy-vline 
WA_EWUCLSTAT_STR-PRID sy-vline 
WA_EWUCLSTAT_STR-LIMIT_LOW sy-vline 
WA_EWUCLSTAT_STR-LIMIT_HIGH sy-vline 
WA_EWUCLSTAT_STR-LIMIT_REST sy-vline 
WA_EWUCLSTAT_STR-SUBTABFLG sy-vline 
WA_EWUCLSTAT_STR-PROCESSED sy-vline      INTO ld_text SEPARATED BY SPACE.

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