ABAP Select data from SAP table TOA_L03 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 TOA_L03 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_L03. 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_L03 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_L03 TYPE STANDARD TABLE OF TOA_L03,
      WA_TOA_L03 TYPE TOA_L03,
      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_L03> TYPE TOA_L03.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_TOA_L03.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM TOA_L03
  INTO TABLE IT_TOA_L03.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TOA_L03
*  INTO TABLE @DATA(IT_TOA_L032).
*--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_L03 INDEX 1 INTO DATA(WA_TOA_L032).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_TOA_L03 ASSIGNING <TOA_L03>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TOA_L03>-MANDANT = 1.
<TOA_L03>-WHO = 1.
<TOA_L03>-DATUM = 1.
<TOA_L03>-ZEIT = 1.
<TOA_L03>-INTINDEX = 1.

ENDLOOP.

LOOP AT IT_TOA_L03 INTO WA_TOA_L03.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TOA_L03-COMMAND, sy-vline,
  WA_TOA_L03-LOGGING, sy-vline,
  WA_TOA_L03-MESSAGE, sy-vline,
  WA_TOA_L03-STRING, sy-vline,
  WA_TOA_L03-STRING2, sy-vline,
  WA_TOA_L03-MESSAGE_ID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TOA_L03 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_L03 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_L03 INTO WA_TOA_L03.


*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_TOA_L03_STR, 
MANDANT TYPE STRING,
WHO TYPE STRING,
DATUM TYPE STRING,
ZEIT TYPE STRING,
INTINDEX TYPE STRING,
COMMAND TYPE STRING,
LOGGING TYPE STRING,
MESSAGE TYPE STRING,
STRING TYPE STRING,
STRING2 TYPE STRING,
MESSAGE_ID TYPE STRING,
MESSAGE_TY TYPE STRING,
MESSAGE_V1 TYPE STRING,
MESSAGE_V2 TYPE STRING,
MESSAGE_V3 TYPE STRING,
MESSAGE_V4 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TOA_L03_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_L03_STR-MANDANT sy-vline 
WA_TOA_L03_STR-WHO sy-vline 
WA_TOA_L03_STR-DATUM sy-vline 
WA_TOA_L03_STR-ZEIT sy-vline 
WA_TOA_L03_STR-INTINDEX sy-vline 
WA_TOA_L03_STR-COMMAND sy-vline 
WA_TOA_L03_STR-LOGGING sy-vline 
WA_TOA_L03_STR-MESSAGE sy-vline 
WA_TOA_L03_STR-STRING sy-vline 
WA_TOA_L03_STR-STRING2 sy-vline 
WA_TOA_L03_STR-MESSAGE_ID sy-vline 
WA_TOA_L03_STR-MESSAGE_TY sy-vline 
WA_TOA_L03_STR-MESSAGE_V1 sy-vline 
WA_TOA_L03_STR-MESSAGE_V2 sy-vline 
WA_TOA_L03_STR-MESSAGE_V3 sy-vline 
WA_TOA_L03_STR-MESSAGE_V4 sy-vline      INTO ld_text SEPARATED BY SPACE.

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