ABAP Select data from SAP table WCSAUTOFLG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WCSAUTOFLG
*  INTO TABLE @DATA(IT_WCSAUTOFLG2).
*--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_WCSAUTOFLG INDEX 1 INTO DATA(WA_WCSAUTOFLG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WCSAUTOFLG>-PREP = 1.
<WCSAUTOFLG>-CHGN = 1.
<WCSAUTOFLG>-PWP = 1.
<WCSAUTOFLG>-WPHO = 1.
<WCSAUTOFLG>-TENT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WCSAUTOFLG-PROC, sy-vline,
  WA_WCSAUTOFLG-CONF, sy-vline,
  WA_WCSAUTOFLG-UNT, sy-vline,
  WA_WCSAUTOFLG-TEST, sy-vline,
  WA_WCSAUTOFLG-ITG, sy-vline,
  WA_WCSAUTOFLG-BTG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WCSAUTOFLG 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_WCSAUTOFLG 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_WCSAUTOFLG INTO WA_WCSAUTOFLG.


*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_WCSAUTOFLG_STR, 
PREP TYPE STRING,
CHGN TYPE STRING,
PWP TYPE STRING,
WPHO TYPE STRING,
TENT TYPE STRING,
PROC TYPE STRING,
CONF TYPE STRING,
UNT TYPE STRING,
TEST 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,
MOBI TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WCSAUTOFLG_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_WCSAUTOFLG_STR-PREP sy-vline 
WA_WCSAUTOFLG_STR-CHGN sy-vline 
WA_WCSAUTOFLG_STR-PWP sy-vline 
WA_WCSAUTOFLG_STR-WPHO sy-vline 
WA_WCSAUTOFLG_STR-TENT sy-vline 
WA_WCSAUTOFLG_STR-PROC sy-vline 
WA_WCSAUTOFLG_STR-CONF sy-vline 
WA_WCSAUTOFLG_STR-UNT sy-vline 
WA_WCSAUTOFLG_STR-TEST sy-vline 
WA_WCSAUTOFLG_STR-ITG sy-vline 
WA_WCSAUTOFLG_STR-BTG sy-vline 
WA_WCSAUTOFLG_STR-PTAG sy-vline 
WA_WCSAUTOFLG_STR-ETG sy-vline 
WA_WCSAUTOFLG_STR-BTUG sy-vline 
WA_WCSAUTOFLG_STR-PTST sy-vline 
WA_WCSAUTOFLG_STR-ETUG sy-vline 
WA_WCSAUTOFLG_STR-BUG sy-vline 
WA_WCSAUTOFLG_STR-EUG sy-vline 
WA_WCSAUTOFLG_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.