ABAP Select data from SAP table WCSITMFLG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WCSITMFLG
*  INTO TABLE @DATA(IT_WCSITMFLG2).
*--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_WCSITMFLG INDEX 1 INTO DATA(WA_WCSITMFLG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WCSITMFLG>-CONF = 1.
<WCSITMFLG>-ITG = 1.
<WCSITMFLG>-BTG = 1.
<WCSITMFLG>-PTAG = 1.
<WCSITMFLG>-ETG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WCSITMFLG-BTUG, sy-vline,
  WA_WCSITMFLG-PTST, sy-vline,
  WA_WCSITMFLG-ETUG, sy-vline,
  WA_WCSITMFLG-BUG, sy-vline,
  WA_WCSITMFLG-EUG, sy-vline,
  WA_WCSITMFLG-INAK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WCSITMFLG 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_WCSITMFLG 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_WCSITMFLG INTO WA_WCSITMFLG.


*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_WCSITMFLG_STR, 
CONF TYPE STRING,
ITG TYPE STRING,
BTG TYPE STRING,
PTAG TYPE STRING,
ETG TYPE STRING,
BTUG TYPE STRING,
PTST TYPE STRING,
ETUG TYPE STRING,
BUG TYPE STRING,
EUG TYPE STRING,
INAK TYPE STRING,
POST TYPE STRING,
PA TYPE STRING,
MOBI TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WCSITMFLG_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_WCSITMFLG_STR-CONF sy-vline 
WA_WCSITMFLG_STR-ITG sy-vline 
WA_WCSITMFLG_STR-BTG sy-vline 
WA_WCSITMFLG_STR-PTAG sy-vline 
WA_WCSITMFLG_STR-ETG sy-vline 
WA_WCSITMFLG_STR-BTUG sy-vline 
WA_WCSITMFLG_STR-PTST sy-vline 
WA_WCSITMFLG_STR-ETUG sy-vline 
WA_WCSITMFLG_STR-BUG sy-vline 
WA_WCSITMFLG_STR-EUG sy-vline 
WA_WCSITMFLG_STR-INAK sy-vline 
WA_WCSITMFLG_STR-POST sy-vline 
WA_WCSITMFLG_STR-PA sy-vline 
WA_WCSITMFLG_STR-MOBI sy-vline      INTO ld_text SEPARATED BY SPACE.

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