ABAP Select data from SAP table DTADC 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 DTADC 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 DTADC. 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 DTADC 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_DTADC TYPE STANDARD TABLE OF DTADC,
      WA_DTADC TYPE DTADC,
      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: <DTADC> TYPE DTADC.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DTADC
*  INTO TABLE @DATA(IT_DTADC2).
*--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_DTADC INDEX 1 INTO DATA(WA_DTADC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DTADC>-C1 = 1.
<DTADC>-C2 = 1.
<DTADC>-C3 = 1.
<DTADC>-C4 = 1.
<DTADC>-C5 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DTADC-C6, sy-vline,
  WA_DTADC-C7A, sy-vline,
  WA_DTADC-C7B, sy-vline,
  WA_DTADC-C8, sy-vline,
  WA_DTADC-C9, sy-vline,
  WA_DTADC-C10, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DTADC 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_DTADC 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_DTADC INTO WA_DTADC.


*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_DTADC_STR, 
C1 TYPE STRING,
C2 TYPE STRING,
C3 TYPE STRING,
C4 TYPE STRING,
C5 TYPE STRING,
C6 TYPE STRING,
C7A TYPE STRING,
C7B TYPE STRING,
C8 TYPE STRING,
C9 TYPE STRING,
C10 TYPE STRING,
C11 TYPE STRING,
C12 TYPE STRING,
C13 TYPE STRING,
C14 TYPE STRING,
C14B TYPE STRING,
C15 TYPE STRING,
C16 TYPE STRING,
C17 TYPE STRING,
C18 TYPE STRING,
CE1_01 TYPE STRING,
CE2_01 TYPE STRING,
CE1_02 TYPE STRING,
CE2_02 TYPE STRING,
CE3_02 TYPE STRING,
CE1_03 TYPE STRING,
CE2_03 TYPE STRING,
CE1_04 TYPE STRING,
CE2_04 TYPE STRING,
CE1_05 TYPE STRING,
CE2_05 TYPE STRING,
CE1_06 TYPE STRING,
CE2_06 TYPE STRING,
CE3_06 TYPE STRING,
CE1_07 TYPE STRING,
CE2_07 TYPE STRING,
CE1_08 TYPE STRING,
CE2_08 TYPE STRING,
CE1_09 TYPE STRING,
CE2_09 TYPE STRING,
CE1_10 TYPE STRING,
CE2_10 TYPE STRING,
CE3_10 TYPE STRING,
CE1_11 TYPE STRING,
CE2_11 TYPE STRING,
CE1_12 TYPE STRING,
CE2_12 TYPE STRING,
CE1_13 TYPE STRING,
CE2_13 TYPE STRING,
CE1_14 TYPE STRING,
CE2_14 TYPE STRING,
CE3_14 TYPE STRING,
CE1_15 TYPE STRING,
CE2_15 TYPE STRING,
CE3_15 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DTADC_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_DTADC_STR-C1 sy-vline 
WA_DTADC_STR-C2 sy-vline 
WA_DTADC_STR-C3 sy-vline 
WA_DTADC_STR-C4 sy-vline 
WA_DTADC_STR-C5 sy-vline 
WA_DTADC_STR-C6 sy-vline 
WA_DTADC_STR-C7A sy-vline 
WA_DTADC_STR-C7B sy-vline 
WA_DTADC_STR-C8 sy-vline 
WA_DTADC_STR-C9 sy-vline 
WA_DTADC_STR-C10 sy-vline 
WA_DTADC_STR-C11 sy-vline 
WA_DTADC_STR-C12 sy-vline 
WA_DTADC_STR-C13 sy-vline 
WA_DTADC_STR-C14 sy-vline 
WA_DTADC_STR-C14B sy-vline 
WA_DTADC_STR-C15 sy-vline 
WA_DTADC_STR-C16 sy-vline 
WA_DTADC_STR-C17 sy-vline 
WA_DTADC_STR-C18 sy-vline 
WA_DTADC_STR-CE1_01 sy-vline 
WA_DTADC_STR-CE2_01 sy-vline 
WA_DTADC_STR-CE1_02 sy-vline 
WA_DTADC_STR-CE2_02 sy-vline 
WA_DTADC_STR-CE3_02 sy-vline 
WA_DTADC_STR-CE1_03 sy-vline 
WA_DTADC_STR-CE2_03 sy-vline 
WA_DTADC_STR-CE1_04 sy-vline 
WA_DTADC_STR-CE2_04 sy-vline 
WA_DTADC_STR-CE1_05 sy-vline 
WA_DTADC_STR-CE2_05 sy-vline 
WA_DTADC_STR-CE1_06 sy-vline 
WA_DTADC_STR-CE2_06 sy-vline 
WA_DTADC_STR-CE3_06 sy-vline 
WA_DTADC_STR-CE1_07 sy-vline 
WA_DTADC_STR-CE2_07 sy-vline 
WA_DTADC_STR-CE1_08 sy-vline 
WA_DTADC_STR-CE2_08 sy-vline 
WA_DTADC_STR-CE1_09 sy-vline 
WA_DTADC_STR-CE2_09 sy-vline 
WA_DTADC_STR-CE1_10 sy-vline 
WA_DTADC_STR-CE2_10 sy-vline 
WA_DTADC_STR-CE3_10 sy-vline 
WA_DTADC_STR-CE1_11 sy-vline 
WA_DTADC_STR-CE2_11 sy-vline 
WA_DTADC_STR-CE1_12 sy-vline 
WA_DTADC_STR-CE2_12 sy-vline 
WA_DTADC_STR-CE1_13 sy-vline 
WA_DTADC_STR-CE2_13 sy-vline 
WA_DTADC_STR-CE1_14 sy-vline 
WA_DTADC_STR-CE2_14 sy-vline 
WA_DTADC_STR-CE3_14 sy-vline 
WA_DTADC_STR-CE1_15 sy-vline 
WA_DTADC_STR-CE2_15 sy-vline 
WA_DTADC_STR-CE3_15 sy-vline      INTO ld_text SEPARATED BY SPACE.

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