ABAP Select data from SAP table DTADCHK 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 DTADCHK 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 DTADCHK. 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 DTADCHK 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_DTADCHK TYPE STANDARD TABLE OF DTADCHK,
      WA_DTADCHK TYPE DTADCHK,
      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: <DTADCHK> TYPE DTADCHK.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DTADCHK
*  INTO TABLE @DATA(IT_DTADCHK2).
*--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_DTADCHK INDEX 1 INTO DATA(WA_DTADCHK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DTADCHK>-K001 = 1.
<DTADCHK>-KHDR = 1.
<DTADCHK>-K155 = 1.
<DTADCHK>-K700 = 1.
<DTADCHK>-K710 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DTADCHK-K713, sy-vline,
  WA_DTADCHK-K715, sy-vline,
  WA_DTADCHK-K720, sy-vline,
  WA_DTADCHK-K730, sy-vline,
  WA_DTADCHK-K732, sy-vline,
  WA_DTADCHK-K733, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DTADCHK 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_DTADCHK 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_DTADCHK INTO WA_DTADCHK.


*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_DTADCHK_STR, 
K001 TYPE STRING,
KHDR TYPE STRING,
K155 TYPE STRING,
K700 TYPE STRING,
K710 TYPE STRING,
K713 TYPE STRING,
K715 TYPE STRING,
K720 TYPE STRING,
K730 TYPE STRING,
K732 TYPE STRING,
K733 TYPE STRING,
K735 TYPE STRING,
K740 TYPE STRING,
K745 TYPE STRING,
K750 TYPE STRING,
K755 TYPE STRING,
K757 TYPE STRING,
K758 TYPE STRING,
K760 TYPE STRING,
K765 TYPE STRING,
K770 TYPE STRING,
K775 TYPE STRING,
K780 TYPE STRING,
K782 TYPE STRING,
K783 TYPE STRING,
K785 TYPE STRING,
K790 TYPE STRING,
K791 TYPE STRING,
K792 TYPE STRING,
K793 TYPE STRING,
K795 TYPE STRING,
K803 TYPE STRING,
K805 TYPE STRING,
K810 TYPE STRING,
K815 TYPE STRING,
K820 TYPE STRING,
K825 TYPE STRING,
K827 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DTADCHK_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_DTADCHK_STR-K001 sy-vline 
WA_DTADCHK_STR-KHDR sy-vline 
WA_DTADCHK_STR-K155 sy-vline 
WA_DTADCHK_STR-K700 sy-vline 
WA_DTADCHK_STR-K710 sy-vline 
WA_DTADCHK_STR-K713 sy-vline 
WA_DTADCHK_STR-K715 sy-vline 
WA_DTADCHK_STR-K720 sy-vline 
WA_DTADCHK_STR-K730 sy-vline 
WA_DTADCHK_STR-K732 sy-vline 
WA_DTADCHK_STR-K733 sy-vline 
WA_DTADCHK_STR-K735 sy-vline 
WA_DTADCHK_STR-K740 sy-vline 
WA_DTADCHK_STR-K745 sy-vline 
WA_DTADCHK_STR-K750 sy-vline 
WA_DTADCHK_STR-K755 sy-vline 
WA_DTADCHK_STR-K757 sy-vline 
WA_DTADCHK_STR-K758 sy-vline 
WA_DTADCHK_STR-K760 sy-vline 
WA_DTADCHK_STR-K765 sy-vline 
WA_DTADCHK_STR-K770 sy-vline 
WA_DTADCHK_STR-K775 sy-vline 
WA_DTADCHK_STR-K780 sy-vline 
WA_DTADCHK_STR-K782 sy-vline 
WA_DTADCHK_STR-K783 sy-vline 
WA_DTADCHK_STR-K785 sy-vline 
WA_DTADCHK_STR-K790 sy-vline 
WA_DTADCHK_STR-K791 sy-vline 
WA_DTADCHK_STR-K792 sy-vline 
WA_DTADCHK_STR-K793 sy-vline 
WA_DTADCHK_STR-K795 sy-vline 
WA_DTADCHK_STR-K803 sy-vline 
WA_DTADCHK_STR-K805 sy-vline 
WA_DTADCHK_STR-K810 sy-vline 
WA_DTADCHK_STR-K815 sy-vline 
WA_DTADCHK_STR-K820 sy-vline 
WA_DTADCHK_STR-K825 sy-vline 
WA_DTADCHK_STR-K827 sy-vline      INTO ld_text SEPARATED BY SPACE.

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