ABAP Select data from SAP table TOA_ARCAS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TOA_ARCAS
*  INTO TABLE @DATA(IT_TOA_ARCAS2).
*--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_TOA_ARCAS INDEX 1 INTO DATA(WA_TOA_ARCAS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TOA_ARCAS>-ANSCHL_ID = 1.
<TOA_ARCAS>-APPLIC_ID = 1.
<TOA_ARCAS>-ARCHIV_ID = 1.
<TOA_ARCAS>-DATUM = 1.
<TOA_ARCAS>-DOK_TYP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TOA_ARCAS-DRUCKER, sy-vline,
  WA_TOA_ARCAS-FORMULAR, sy-vline,
  WA_TOA_ARCAS-INFO, sy-vline,
  WA_TOA_ARCAS-MANDANT, sy-vline,
  WA_TOA_ARCAS-OBJECT_ART, sy-vline,
  WA_TOA_ARCAS-REPORT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TOA_ARCAS 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_TOA_ARCAS 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_TOA_ARCAS INTO WA_TOA_ARCAS.


*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.

*Conversion exit SPDEV, internal->external for field DRUCKER
CALL FUNCTION 'CONVERSION_EXIT_SPDEV_OUTPUT'
  EXPORTING
    input =                      WA_TOA_ARCAS-DRUCKER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TOA_ARCAS-DRUCKER.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_TOA_ARCAS_STR, 
ANSCHL_ID TYPE STRING,
APPLIC_ID TYPE STRING,
ARCHIV_ID TYPE STRING,
DATUM TYPE STRING,
DOK_TYP TYPE STRING,
DRUCKER TYPE STRING,
FORMULAR TYPE STRING,
INFO TYPE STRING,
MANDANT TYPE STRING,
OBJECT_ART TYPE STRING,
REPORT TYPE STRING,
RPC_HOST TYPE STRING,
RPC_SERVIC TYPE STRING,
TEXT TYPE STRING,
USER TYPE STRING,
ARCHIVPATH TYPE STRING,
PROTOKOLL TYPE STRING,
VERSION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TOA_ARCAS_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_TOA_ARCAS_STR-ANSCHL_ID sy-vline 
WA_TOA_ARCAS_STR-APPLIC_ID sy-vline 
WA_TOA_ARCAS_STR-ARCHIV_ID sy-vline 
WA_TOA_ARCAS_STR-DATUM sy-vline 
WA_TOA_ARCAS_STR-DOK_TYP sy-vline 
WA_TOA_ARCAS_STR-DRUCKER sy-vline 
WA_TOA_ARCAS_STR-FORMULAR sy-vline 
WA_TOA_ARCAS_STR-INFO sy-vline 
WA_TOA_ARCAS_STR-MANDANT sy-vline 
WA_TOA_ARCAS_STR-OBJECT_ART sy-vline 
WA_TOA_ARCAS_STR-REPORT sy-vline 
WA_TOA_ARCAS_STR-RPC_HOST sy-vline 
WA_TOA_ARCAS_STR-RPC_SERVIC sy-vline 
WA_TOA_ARCAS_STR-TEXT sy-vline 
WA_TOA_ARCAS_STR-USER sy-vline 
WA_TOA_ARCAS_STR-ARCHIVPATH sy-vline 
WA_TOA_ARCAS_STR-PROTOKOLL sy-vline 
WA_TOA_ARCAS_STR-VERSION sy-vline      INTO ld_text SEPARATED BY SPACE.

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