ABAP Select data from SAP table PIQSMFCL_EVTWL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PIQSMFCL_EVTWL
*  INTO TABLE @DATA(IT_PIQSMFCL_EVTWL2).
*--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_PIQSMFCL_EVTWL INDEX 1 INTO DATA(WA_PIQSMFCL_EVTWL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PIQSMFCL_EVTWL>-SEQNR = 1.
<PIQSMFCL_EVTWL>-WLACTIVITY = 1.
<PIQSMFCL_EVTWL>-EXPENDITURE = 1.
<PIQSMFCL_EVTWL>-EXP_UNIT = 1.
<PIQSMFCL_EVTWL>-EXPENDITUREFWL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PIQSMFCL_EVTWL-OTYPEFWL, sy-vline,
  WA_PIQSMFCL_EVTWL-OBJIDFWL, sy-vline,
  WA_PIQSMFCL_EVTWL-OTEXTFWL, sy-vline,
  WA_PIQSMFCL_EVTWL-SHORTFWL, sy-vline,
  WA_PIQSMFCL_EVTWL-PERSONFWL, sy-vline,
  WA_PIQSMFCL_EVTWL-BEGDAFWL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PIQSMFCL_EVTWL 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_PIQSMFCL_EVTWL 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_PIQSMFCL_EVTWL INTO WA_PIQSMFCL_EVTWL.


*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_PIQSMFCL_EVTWL_STR, 
SEQNR TYPE STRING,
WLACTIVITY TYPE STRING,
EXPENDITURE TYPE STRING,
EXP_UNIT TYPE STRING,
EXPENDITUREFWL TYPE STRING,
OTYPEFWL TYPE STRING,
OBJIDFWL TYPE STRING,
OTEXTFWL TYPE STRING,
SHORTFWL TYPE STRING,
PERSONFWL TYPE STRING,
BEGDAFWL TYPE STRING,
ENDDAFWL TYPE STRING,
ISTATFWL TYPE STRING,
PRIOXFWL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PIQSMFCL_EVTWL_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_PIQSMFCL_EVTWL_STR-SEQNR sy-vline 
WA_PIQSMFCL_EVTWL_STR-WLACTIVITY sy-vline 
WA_PIQSMFCL_EVTWL_STR-EXPENDITURE sy-vline 
WA_PIQSMFCL_EVTWL_STR-EXP_UNIT sy-vline 
WA_PIQSMFCL_EVTWL_STR-EXPENDITUREFWL sy-vline 
WA_PIQSMFCL_EVTWL_STR-OTYPEFWL sy-vline 
WA_PIQSMFCL_EVTWL_STR-OBJIDFWL sy-vline 
WA_PIQSMFCL_EVTWL_STR-OTEXTFWL sy-vline 
WA_PIQSMFCL_EVTWL_STR-SHORTFWL sy-vline 
WA_PIQSMFCL_EVTWL_STR-PERSONFWL sy-vline 
WA_PIQSMFCL_EVTWL_STR-BEGDAFWL sy-vline 
WA_PIQSMFCL_EVTWL_STR-ENDDAFWL sy-vline 
WA_PIQSMFCL_EVTWL_STR-ISTATFWL sy-vline 
WA_PIQSMFCL_EVTWL_STR-PRIOXFWL sy-vline      INTO ld_text SEPARATED BY SPACE.

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