ABAP Select data from SAP table DIO24 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 DIO24 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 DIO24. 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 DIO24 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_DIO24 TYPE STANDARD TABLE OF DIO24,
      WA_DIO24 TYPE DIO24,
      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: <DIO24> TYPE DIO24.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DIO24.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DIO24
  INTO TABLE IT_DIO24.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DIO24
*  INTO TABLE @DATA(IT_DIO242).
*--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_DIO24 INDEX 1 INTO DATA(WA_DIO242).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DIO24 ASSIGNING <DIO24>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DIO24>-MCONAME = 1.
<DIO24>-MCID = 1.
<DIO24>-MCFIELDN = 1.
<DIO24>-POSITION = 1.
<DIO24>-TABNAME = 1.

ENDLOOP.

LOOP AT IT_DIO24 INTO WA_DIO24.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DIO24-BASEFLDN, sy-vline,
  WA_DIO24-OBJPOS, sy-vline,
  WA_DIO24-OFFSET, sy-vline,
  WA_DIO24-FLENGTH, sy-vline,
  WA_DIO24-OUTLINE, sy-vline,
  WA_DIO24-OUTCOL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DIO24 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_DIO24 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_DIO24 INTO WA_DIO24.


*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_DIO24_STR, 
MCONAME TYPE STRING,
MCID TYPE STRING,
MCFIELDN TYPE STRING,
POSITION TYPE STRING,
TABNAME TYPE STRING,
BASEFLDN TYPE STRING,
OBJPOS TYPE STRING,
OFFSET TYPE STRING,
FLENGTH TYPE STRING,
OUTLINE TYPE STRING,
OUTCOL TYPE STRING,
OUTMODFLAG TYPE STRING,
MEMID TYPE STRING,
GPA TYPE STRING,
SPA TYPE STRING,
FLAGS TYPE STRING,
NOUPPER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DIO24_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_DIO24_STR-MCONAME sy-vline 
WA_DIO24_STR-MCID sy-vline 
WA_DIO24_STR-MCFIELDN sy-vline 
WA_DIO24_STR-POSITION sy-vline 
WA_DIO24_STR-TABNAME sy-vline 
WA_DIO24_STR-BASEFLDN sy-vline 
WA_DIO24_STR-OBJPOS sy-vline 
WA_DIO24_STR-OFFSET sy-vline 
WA_DIO24_STR-FLENGTH sy-vline 
WA_DIO24_STR-OUTLINE sy-vline 
WA_DIO24_STR-OUTCOL sy-vline 
WA_DIO24_STR-OUTMODFLAG sy-vline 
WA_DIO24_STR-MEMID sy-vline 
WA_DIO24_STR-GPA sy-vline 
WA_DIO24_STR-SPA sy-vline 
WA_DIO24_STR-FLAGS sy-vline 
WA_DIO24_STR-NOUPPER sy-vline      INTO ld_text SEPARATED BY SPACE.

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