ABAP Select data from SAP table WOSI_CONTROL into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WOSI_CONTROL
*  INTO TABLE @DATA(IT_WOSI_CONTROL2).
*--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_WOSI_CONTROL INDEX 1 INTO DATA(WA_WOSI_CONTROL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WOSI_CONTROL>-MESSAGE = 1.
<WOSI_CONTROL>-IAC_STAT = 1.
<WOSI_CONTROL>-ERROR_STATUS = 1.
<WOSI_CONTROL>-USE_SAPGUI = 1.
<WOSI_CONTROL>-ACTION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WOSI_CONTROL-HIDE_500, sy-vline,
  WA_WOSI_CONTROL-MDE_INVNU_CREATE, sy-vline,
  WA_WOSI_CONTROL-SHOW_FRAME_MDE, sy-vline,
  WA_WOSI_CONTROL-TCODE, sy-vline,
  WA_WOSI_CONTROL-STORE, sy-vline,
  WA_WOSI_CONTROL-STORE_FLD_OPEN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WOSI_CONTROL 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_WOSI_CONTROL 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_WOSI_CONTROL INTO WA_WOSI_CONTROL.


*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_WOSI_CONTROL_STR, 
MESSAGE TYPE STRING,
IAC_STAT TYPE STRING,
ERROR_STATUS TYPE STRING,
USE_SAPGUI TYPE STRING,
ACTION TYPE STRING,
HIDE_500 TYPE STRING,
MDE_INVNU_CREATE TYPE STRING,
SHOW_FRAME_MDE TYPE STRING,
TCODE TYPE STRING,
STORE TYPE STRING,
STORE_FLD_OPEN TYPE STRING,
ERROR_LIST TYPE STRING,
FILENAME TYPE STRING,
XML_WITH_REF_POSTED TYPE STRING,
BADI_SHELP_ACTIVE TYPE STRING,
APPLET_START_TRIED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WOSI_CONTROL_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_WOSI_CONTROL_STR-MESSAGE sy-vline 
WA_WOSI_CONTROL_STR-IAC_STAT sy-vline 
WA_WOSI_CONTROL_STR-ERROR_STATUS sy-vline 
WA_WOSI_CONTROL_STR-USE_SAPGUI sy-vline 
WA_WOSI_CONTROL_STR-ACTION sy-vline 
WA_WOSI_CONTROL_STR-HIDE_500 sy-vline 
WA_WOSI_CONTROL_STR-MDE_INVNU_CREATE sy-vline 
WA_WOSI_CONTROL_STR-SHOW_FRAME_MDE sy-vline 
WA_WOSI_CONTROL_STR-TCODE sy-vline 
WA_WOSI_CONTROL_STR-STORE sy-vline 
WA_WOSI_CONTROL_STR-STORE_FLD_OPEN sy-vline 
WA_WOSI_CONTROL_STR-ERROR_LIST sy-vline 
WA_WOSI_CONTROL_STR-FILENAME sy-vline 
WA_WOSI_CONTROL_STR-XML_WITH_REF_POSTED sy-vline 
WA_WOSI_CONTROL_STR-BADI_SHELP_ACTIVE sy-vline 
WA_WOSI_CONTROL_STR-APPLET_START_TRIED sy-vline      INTO ld_text SEPARATED BY SPACE.

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