ABAP Select data from SAP table WCSWCMCTRL into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP WCSWCMCTRL 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 WCSWCMCTRL. 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 WCSWCMCTRL 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_WCSWCMCTRL TYPE STANDARD TABLE OF WCSWCMCTRL,
      WA_WCSWCMCTRL TYPE WCSWCMCTRL,
      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: <WCSWCMCTRL> TYPE WCSWCMCTRL.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WCSWCMCTRL
*  INTO TABLE @DATA(IT_WCSWCMCTRL2).
*--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_WCSWCMCTRL INDEX 1 INTO DATA(WA_WCSWCMCTRL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WCSWCMCTRL>-USED = 1.
<WCSWCMCTRL>-SCREEN_TABLE1 = 1.
<WCSWCMCTRL>-SCREEN_TABLE2 = 1.
<WCSWCMCTRL>-SCREEN_TABLE3 = 1.
<WCSWCMCTRL>-SCREEN_TABLE4 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WCSWCMCTRL-SCREEN_TABLE5, sy-vline,
  WA_WCSWCMCTRL-CPPREPFLG, sy-vline,
  WA_WCSWCMCTRL-CPCHGNFLG, sy-vline,
  WA_WCSWCMCTRL-CPCATFLG, sy-vline,
  WA_WCSWCMCTRL-CPOBJLSTFLG, sy-vline,
  WA_WCSWCMCTRL-CPAPRVFLG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WCSWCMCTRL 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_WCSWCMCTRL 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_WCSWCMCTRL INTO WA_WCSWCMCTRL.


*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_WCSWCMCTRL_STR, 
USED TYPE STRING,
SCREEN_TABLE1 TYPE STRING,
SCREEN_TABLE2 TYPE STRING,
SCREEN_TABLE3 TYPE STRING,
SCREEN_TABLE4 TYPE STRING,
SCREEN_TABLE5 TYPE STRING,
CPPREPFLG TYPE STRING,
CPCHGNFLG TYPE STRING,
CPCATFLG TYPE STRING,
CPOBJLSTFLG TYPE STRING,
CPAPRVFLG TYPE STRING,
CPASGNFLG TYPE STRING,
CPINACFLG TYPE STRING,
CPPWPFLG TYPE STRING,
CPOPLST1FLG TYPE STRING,
CPOPLST2FLG TYPE STRING,
DEFAULT1 TYPE STRING,
DEFAULT2 TYPE STRING,
DEFAULT3 TYPE STRING,
DEFAULT4 TYPE STRING,
DEFAULT5 TYPE STRING,
DEFAULT6 TYPE STRING,
DEFAULT7 TYPE STRING,
DEFAULT8 TYPE STRING,
MS1FLG TYPE STRING,
MS1 TYPE STRING,
MS2FLG TYPE STRING,
MS2 TYPE STRING,
DPACTFLG TYPE STRING,
DPINACFLG TYPE STRING,
CPCWPFLG TYPE STRING,
CPHOWPFLG TYPE STRING,
CPRWPFLG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WCSWCMCTRL_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_WCSWCMCTRL_STR-USED sy-vline 
WA_WCSWCMCTRL_STR-SCREEN_TABLE1 sy-vline 
WA_WCSWCMCTRL_STR-SCREEN_TABLE2 sy-vline 
WA_WCSWCMCTRL_STR-SCREEN_TABLE3 sy-vline 
WA_WCSWCMCTRL_STR-SCREEN_TABLE4 sy-vline 
WA_WCSWCMCTRL_STR-SCREEN_TABLE5 sy-vline 
WA_WCSWCMCTRL_STR-CPPREPFLG sy-vline 
WA_WCSWCMCTRL_STR-CPCHGNFLG sy-vline 
WA_WCSWCMCTRL_STR-CPCATFLG sy-vline 
WA_WCSWCMCTRL_STR-CPOBJLSTFLG sy-vline 
WA_WCSWCMCTRL_STR-CPAPRVFLG sy-vline 
WA_WCSWCMCTRL_STR-CPASGNFLG sy-vline 
WA_WCSWCMCTRL_STR-CPINACFLG sy-vline 
WA_WCSWCMCTRL_STR-CPPWPFLG sy-vline 
WA_WCSWCMCTRL_STR-CPOPLST1FLG sy-vline 
WA_WCSWCMCTRL_STR-CPOPLST2FLG sy-vline 
WA_WCSWCMCTRL_STR-DEFAULT1 sy-vline 
WA_WCSWCMCTRL_STR-DEFAULT2 sy-vline 
WA_WCSWCMCTRL_STR-DEFAULT3 sy-vline 
WA_WCSWCMCTRL_STR-DEFAULT4 sy-vline 
WA_WCSWCMCTRL_STR-DEFAULT5 sy-vline 
WA_WCSWCMCTRL_STR-DEFAULT6 sy-vline 
WA_WCSWCMCTRL_STR-DEFAULT7 sy-vline 
WA_WCSWCMCTRL_STR-DEFAULT8 sy-vline 
WA_WCSWCMCTRL_STR-MS1FLG sy-vline 
WA_WCSWCMCTRL_STR-MS1 sy-vline 
WA_WCSWCMCTRL_STR-MS2FLG sy-vline 
WA_WCSWCMCTRL_STR-MS2 sy-vline 
WA_WCSWCMCTRL_STR-DPACTFLG sy-vline 
WA_WCSWCMCTRL_STR-DPINACFLG sy-vline 
WA_WCSWCMCTRL_STR-CPCWPFLG sy-vline 
WA_WCSWCMCTRL_STR-CPHOWPFLG sy-vline 
WA_WCSWCMCTRL_STR-CPRWPFLG sy-vline      INTO ld_text SEPARATED BY SPACE.

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