ABAP Select data from SAP table T5G_DTONI into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T5G_DTONI 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 T5G_DTONI. 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 T5G_DTONI 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_T5G_DTONI TYPE STANDARD TABLE OF T5G_DTONI,
      WA_T5G_DTONI TYPE T5G_DTONI,
      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: <T5G_DTONI> TYPE T5G_DTONI.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T5G_DTONI.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T5G_DTONI
  INTO TABLE IT_T5G_DTONI.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T5G_DTONI
*  INTO TABLE @DATA(IT_T5G_DTONI2).
*--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_T5G_DTONI INDEX 1 INTO DATA(WA_T5G_DTONI2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T5G_DTONI ASSIGNING <T5G_DTONI>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T5G_DTONI>-MANDT = 1.
<T5G_DTONI>-PERNR = 1.
<T5G_DTONI>-NICAT = 1.
<T5G_DTONI>-CTOUT = 1.
<T5G_DTONI>-DIRFB = 1.

ENDLOOP.

LOOP AT IT_T5G_DTONI INTO WA_T5G_DTONI.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T5G_DTONI-PAYTY, sy-vline,
  WA_T5G_DTONI-PAYID, sy-vline,
  WA_T5G_DTONI-PAYDT, sy-vline,
  WA_T5G_DTONI-ASSGM, sy-vline,
  WA_T5G_DTONI-PRRTY, sy-vline,
  WA_T5G_DTONI-APPS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T5G_DTONI 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_T5G_DTONI 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_T5G_DTONI INTO WA_T5G_DTONI.


*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_T5G_DTONI_STR, 
MANDT TYPE STRING,
PERNR TYPE STRING,
NICAT TYPE STRING,
CTOUT TYPE STRING,
DIRFB TYPE STRING,
PAYTY TYPE STRING,
PAYID TYPE STRING,
PAYDT TYPE STRING,
ASSGM TYPE STRING,
PRRTY TYPE STRING,
APPS TYPE STRING,
DIRRP TYPE STRING,
DIRPW TYPE STRING,
LSFLG TYPE STRING,
LTLVR TYPE STRING,
WK6FL TYPE STRING,
NIPAY TYPE STRING,
NIBASE TYPE STRING,
AMTTOLEL TYPE STRING,
AMTLELEET TYPE STRING,
AMTEETERT TYPE STRING,
AMTERTUEL TYPE STRING,
AMTFROMUEL TYPE STRING,
EENIC TYPE STRING,
ERNIC TYPE STRING,
EENIR TYPE STRING,
ERNIR TYPE STRING,
DELFLG TYPE STRING,
SRCFLG TYPE STRING,
AMTERTUAP TYPE STRING,
AMTFROMUST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T5G_DTONI_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_T5G_DTONI_STR-MANDT sy-vline 
WA_T5G_DTONI_STR-PERNR sy-vline 
WA_T5G_DTONI_STR-NICAT sy-vline 
WA_T5G_DTONI_STR-CTOUT sy-vline 
WA_T5G_DTONI_STR-DIRFB sy-vline 
WA_T5G_DTONI_STR-PAYTY sy-vline 
WA_T5G_DTONI_STR-PAYID sy-vline 
WA_T5G_DTONI_STR-PAYDT sy-vline 
WA_T5G_DTONI_STR-ASSGM sy-vline 
WA_T5G_DTONI_STR-PRRTY sy-vline 
WA_T5G_DTONI_STR-APPS sy-vline 
WA_T5G_DTONI_STR-DIRRP sy-vline 
WA_T5G_DTONI_STR-DIRPW sy-vline 
WA_T5G_DTONI_STR-LSFLG sy-vline 
WA_T5G_DTONI_STR-LTLVR sy-vline 
WA_T5G_DTONI_STR-WK6FL sy-vline 
WA_T5G_DTONI_STR-NIPAY sy-vline 
WA_T5G_DTONI_STR-NIBASE sy-vline 
WA_T5G_DTONI_STR-AMTTOLEL sy-vline 
WA_T5G_DTONI_STR-AMTLELEET sy-vline 
WA_T5G_DTONI_STR-AMTEETERT sy-vline 
WA_T5G_DTONI_STR-AMTERTUEL sy-vline 
WA_T5G_DTONI_STR-AMTFROMUEL sy-vline 
WA_T5G_DTONI_STR-EENIC sy-vline 
WA_T5G_DTONI_STR-ERNIC sy-vline 
WA_T5G_DTONI_STR-EENIR sy-vline 
WA_T5G_DTONI_STR-ERNIR sy-vline 
WA_T5G_DTONI_STR-DELFLG sy-vline 
WA_T5G_DTONI_STR-SRCFLG sy-vline 
WA_T5G_DTONI_STR-AMTERTUAP sy-vline 
WA_T5G_DTONI_STR-AMTFROMUST sy-vline      INTO ld_text SEPARATED BY SPACE.

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