ABAP Select data from SAP table /SAPAPO/CONTROLDISPLAY into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SAPAPO/CONTROLDISPLAY 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 /SAPAPO/CONTROLDISPLAY. 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 /SAPAPO/CONTROLDISPLAY 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_/SAPAPO/CONTROLDISPLAY TYPE STANDARD TABLE OF /SAPAPO/CONTROLDISPLAY,
      WA_/SAPAPO/CONTROLDISPLAY TYPE /SAPAPO/CONTROLDISPLAY,
      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: </SAPAPO/CONTROLDISPLAY> TYPE /SAPAPO/CONTROLDISPLAY.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SAPAPO/CONTROLDISPLAY
  INTO TABLE IT_/SAPAPO/CONTROLDISPLAY.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/CONTROLDISPLAY
*  INTO TABLE @DATA(IT_/SAPAPO/CONTROLDISPLAY2).
*--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_/SAPAPO/CONTROLDISPLAY INDEX 1 INTO DATA(WA_/SAPAPO/CONTROLDISPLAY2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SAPAPO/CONTROLDISPLAY ASSIGNING </SAPAPO/CONTROLDISPLAY>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/CONTROLDISPLAY>-HANDLE = 1.
</SAPAPO/CONTROLDISPLAY>-OBJ = 1.
</SAPAPO/CONTROLDISPLAY>-HEADER = 1.
</SAPAPO/CONTROLDISPLAY>-TYPE = 1.
</SAPAPO/CONTROLDISPLAY>-HANDLE = 1.

ENDLOOP.

LOOP AT IT_/SAPAPO/CONTROLDISPLAY INTO WA_/SAPAPO/CONTROLDISPLAY.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/CONTROLDISPLAY-CB_INDEX, sy-vline,
  WA_/SAPAPO/CONTROLDISPLAY-CLSID, sy-vline,
  WA_/SAPAPO/CONTROLDISPLAY-SHELLID, sy-vline,
  WA_/SAPAPO/CONTROLDISPLAY-PARENTID, sy-vline,
  WA_/SAPAPO/CONTROLDISPLAY-C_TYPE, sy-vline,
  WA_/SAPAPO/CONTROLDISPLAY-CLSID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/CONTROLDISPLAY 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_/SAPAPO/CONTROLDISPLAY 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_/SAPAPO/CONTROLDISPLAY INTO WA_/SAPAPO/CONTROLDISPLAY.


*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_/SAPAPO/CONTROLDISPLAY_STR, 
HANDLE TYPE STRING,
OBJ TYPE STRING,
HEADER TYPE STRING,
TYPE TYPE STRING,
HANDLE TYPE STRING,
CB_INDEX TYPE STRING,
CLSID TYPE STRING,
SHELLID TYPE STRING,
PARENTID TYPE STRING,
C_TYPE TYPE STRING,
CLSID TYPE STRING,
ORIGIN TYPE STRING,
HANDLE_TYPE TYPE STRING,
LIFETIME TYPE STRING,
PROGRAM TYPE STRING,
DYNNR TYPE STRING,
IMODE TYPE STRING,
DYNPRO_POS TYPE STRING,
GUID TYPE STRING,
FLG_VERWENDUNG TYPE STRING,
CONTAINER TYPE STRING,
COLUMNS TYPE STRING,
HEADERS TYPE STRING,
NODES TYPE STRING,
ITEMS TYPE STRING,
CALLBACKS TYPE STRING,
LISTITEMS TYPE STRING,
TB_BUTTONS TYPE STRING,
TB_MENU TYPE STRING,
TB_CALLBACKS TYPE STRING,
SB_BUTTONS TYPE STRING,
SB_MENU TYPE STRING,
SB_CALLBACKS TYPE STRING,
FLG_INIT TYPE STRING,
FLG_APPLICATION TYPE STRING,
FLG_DATA_STATUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/CONTROLDISPLAY_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_/SAPAPO/CONTROLDISPLAY_STR-HANDLE sy-vline 
WA_/SAPAPO/CONTROLDISPLAY_STR-OBJ sy-vline 
WA_/SAPAPO/CONTROLDISPLAY_STR-HEADER sy-vline 
WA_/SAPAPO/CONTROLDISPLAY_STR-TYPE sy-vline 
WA_/SAPAPO/CONTROLDISPLAY_STR-HANDLE sy-vline 
WA_/SAPAPO/CONTROLDISPLAY_STR-CB_INDEX sy-vline 
WA_/SAPAPO/CONTROLDISPLAY_STR-CLSID sy-vline 
WA_/SAPAPO/CONTROLDISPLAY_STR-SHELLID sy-vline 
WA_/SAPAPO/CONTROLDISPLAY_STR-PARENTID sy-vline 
WA_/SAPAPO/CONTROLDISPLAY_STR-C_TYPE sy-vline 
WA_/SAPAPO/CONTROLDISPLAY_STR-CLSID sy-vline 
WA_/SAPAPO/CONTROLDISPLAY_STR-ORIGIN sy-vline 
WA_/SAPAPO/CONTROLDISPLAY_STR-HANDLE_TYPE sy-vline 
WA_/SAPAPO/CONTROLDISPLAY_STR-LIFETIME sy-vline 
WA_/SAPAPO/CONTROLDISPLAY_STR-PROGRAM sy-vline 
WA_/SAPAPO/CONTROLDISPLAY_STR-DYNNR sy-vline 
WA_/SAPAPO/CONTROLDISPLAY_STR-IMODE sy-vline 
WA_/SAPAPO/CONTROLDISPLAY_STR-DYNPRO_POS sy-vline 
WA_/SAPAPO/CONTROLDISPLAY_STR-GUID sy-vline 
WA_/SAPAPO/CONTROLDISPLAY_STR-FLG_VERWENDUNG sy-vline 
WA_/SAPAPO/CONTROLDISPLAY_STR-CONTAINER sy-vline 
WA_/SAPAPO/CONTROLDISPLAY_STR-COLUMNS sy-vline 
WA_/SAPAPO/CONTROLDISPLAY_STR-HEADERS sy-vline 
WA_/SAPAPO/CONTROLDISPLAY_STR-NODES sy-vline 
WA_/SAPAPO/CONTROLDISPLAY_STR-ITEMS sy-vline 
WA_/SAPAPO/CONTROLDISPLAY_STR-CALLBACKS sy-vline 
WA_/SAPAPO/CONTROLDISPLAY_STR-LISTITEMS sy-vline 
WA_/SAPAPO/CONTROLDISPLAY_STR-TB_BUTTONS sy-vline 
WA_/SAPAPO/CONTROLDISPLAY_STR-TB_MENU sy-vline 
WA_/SAPAPO/CONTROLDISPLAY_STR-TB_CALLBACKS sy-vline 
WA_/SAPAPO/CONTROLDISPLAY_STR-SB_BUTTONS sy-vline 
WA_/SAPAPO/CONTROLDISPLAY_STR-SB_MENU sy-vline 
WA_/SAPAPO/CONTROLDISPLAY_STR-SB_CALLBACKS sy-vline 
WA_/SAPAPO/CONTROLDISPLAY_STR-FLG_INIT sy-vline 
WA_/SAPAPO/CONTROLDISPLAY_STR-FLG_APPLICATION sy-vline 
WA_/SAPAPO/CONTROLDISPLAY_STR-FLG_DATA_STATUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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