ABAP Select data from SAP table TOACU into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TOACU
*  INTO TABLE @DATA(IT_TOACU2).
*--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_TOACU INDEX 1 INTO DATA(WA_TOACU2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TOACU>-MANDANT = 1.
<TOACU>-MAXOBJECT = 1.
<TOACU>-PROZESSTYP = 1.
<TOACU>-EVENT = 1.
<TOACU>-PDF = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TOACU-DVS, sy-vline,
  WA_TOACU-FOLDER, sy-vline,
  WA_TOACU-MULTIPLE, sy-vline,
  WA_TOACU-SIGNATURE, sy-vline,
  WA_TOACU-GOS, sy-vline,
  WA_TOACU-BDN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TOACU 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_TOACU 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_TOACU INTO WA_TOACU.


*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_TOACU_STR, 
MANDANT TYPE STRING,
MAXOBJECT TYPE STRING,
PROZESSTYP TYPE STRING,
EVENT TYPE STRING,
PDF TYPE STRING,
DVS TYPE STRING,
FOLDER TYPE STRING,
MULTIPLE TYPE STRING,
SIGNATURE TYPE STRING,
GOS TYPE STRING,
BDN TYPE STRING,
ALV TYPE STRING,
OBJPOPUP TYPE STRING,
WINGUIEAI TYPE STRING,
WINGUIHT1 TYPE STRING,
WINGUIHT2 TYPE STRING,
WEBGUIHT1 TYPE STRING,
WEBGUIHT2 TYPE STRING,
ANZHITLIST TYPE STRING,
IMCNO TYPE STRING,
GOSNO TYPE STRING,
DIRECT TYPE STRING,
DTHOLD TYPE STRING,
ANZDND TYPE STRING,
GUIWINHT1 TYPE STRING,
GUIWINHT2 TYPE STRING,
GUIWEBHT1 TYPE STRING,
GUIWEBHT2 TYPE STRING,
OWNHTML TYPE STRING,
NOSORT TYPE STRING,
FROMGUI TYPE STRING,
SCREEN300 TYPE STRING,
EVENT_BAR TYPE STRING,
NO_DP TYPE STRING,
WAIT_IMC TYPE STRING,
PROFIL TYPE STRING,
ALLOG TYPE STRING,
RESERV1 TYPE STRING,
RESERV2 TYPE STRING,
RESERV3 TYPE STRING,
RESERV4 TYPE STRING,
EVENT_PRI TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TOACU_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_TOACU_STR-MANDANT sy-vline 
WA_TOACU_STR-MAXOBJECT sy-vline 
WA_TOACU_STR-PROZESSTYP sy-vline 
WA_TOACU_STR-EVENT sy-vline 
WA_TOACU_STR-PDF sy-vline 
WA_TOACU_STR-DVS sy-vline 
WA_TOACU_STR-FOLDER sy-vline 
WA_TOACU_STR-MULTIPLE sy-vline 
WA_TOACU_STR-SIGNATURE sy-vline 
WA_TOACU_STR-GOS sy-vline 
WA_TOACU_STR-BDN sy-vline 
WA_TOACU_STR-ALV sy-vline 
WA_TOACU_STR-OBJPOPUP sy-vline 
WA_TOACU_STR-WINGUIEAI sy-vline 
WA_TOACU_STR-WINGUIHT1 sy-vline 
WA_TOACU_STR-WINGUIHT2 sy-vline 
WA_TOACU_STR-WEBGUIHT1 sy-vline 
WA_TOACU_STR-WEBGUIHT2 sy-vline 
WA_TOACU_STR-ANZHITLIST sy-vline 
WA_TOACU_STR-IMCNO sy-vline 
WA_TOACU_STR-GOSNO sy-vline 
WA_TOACU_STR-DIRECT sy-vline 
WA_TOACU_STR-DTHOLD sy-vline 
WA_TOACU_STR-ANZDND sy-vline 
WA_TOACU_STR-GUIWINHT1 sy-vline 
WA_TOACU_STR-GUIWINHT2 sy-vline 
WA_TOACU_STR-GUIWEBHT1 sy-vline 
WA_TOACU_STR-GUIWEBHT2 sy-vline 
WA_TOACU_STR-OWNHTML sy-vline 
WA_TOACU_STR-NOSORT sy-vline 
WA_TOACU_STR-FROMGUI sy-vline 
WA_TOACU_STR-SCREEN300 sy-vline 
WA_TOACU_STR-EVENT_BAR sy-vline 
WA_TOACU_STR-NO_DP sy-vline 
WA_TOACU_STR-WAIT_IMC sy-vline 
WA_TOACU_STR-PROFIL sy-vline 
WA_TOACU_STR-ALLOG sy-vline 
WA_TOACU_STR-RESERV1 sy-vline 
WA_TOACU_STR-RESERV2 sy-vline 
WA_TOACU_STR-RESERV3 sy-vline 
WA_TOACU_STR-RESERV4 sy-vline 
WA_TOACU_STR-EVENT_PRI sy-vline      INTO ld_text SEPARATED BY SPACE.

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