ABAP Select data from SAP table DRAD_CL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DRAD_CL
*  INTO TABLE @DATA(IT_DRAD_CL2).
*--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_DRAD_CL INDEX 1 INTO DATA(WA_DRAD_CL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DRAD_CL>-MANDT = 1.
<DRAD_CL>-DOKAR = 1.
<DRAD_CL>-DOKNR = 1.
<DRAD_CL>-DOKVR = 1.
<DRAD_CL>-DOKTL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DRAD_CL-DOKOB, sy-vline,
  WA_DRAD_CL-OBZAE, sy-vline,
  WA_DRAD_CL-OBJKY, sy-vline,
  WA_DRAD_CL-VRKSTAT, sy-vline,
  WA_DRAD_CL-VRKSTAT1, sy-vline,
  WA_DRAD_CL-VOBJ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DRAD_CL 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_DRAD_CL 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_DRAD_CL INTO WA_DRAD_CL.


*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.

*Conversion exit ALPHA, internal->external for field DOKNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DRAD_CL-DOKNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DRAD_CL-DOKNR.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_DRAD_CL_STR, 
MANDT TYPE STRING,
DOKAR TYPE STRING,
DOKNR TYPE STRING,
DOKVR TYPE STRING,
DOKTL TYPE STRING,
DOKOB TYPE STRING,
OBZAE TYPE STRING,
OBJKY TYPE STRING,
VRKSTAT TYPE STRING,
VRKSTAT1 TYPE STRING,
VOBJ TYPE STRING,
VKEY TYPE STRING,
VDIR TYPE STRING,
VIEWFLAG TYPE STRING,
DELFLAG TYPE STRING,
LONGTEXT_ID TYPE STRING,
CAD_POS TYPE STRING,
CM_FIXED TYPE STRING,
ARCHFLAG TYPE STRING,
DUMMY_DRAD_INCL_EEW_PS TYPE STRING,
BO_ALTKEY TYPE STRING,
DUMMY_CL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DRAD_CL_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_DRAD_CL_STR-MANDT sy-vline 
WA_DRAD_CL_STR-DOKAR sy-vline 
WA_DRAD_CL_STR-DOKNR sy-vline 
WA_DRAD_CL_STR-DOKVR sy-vline 
WA_DRAD_CL_STR-DOKTL sy-vline 
WA_DRAD_CL_STR-DOKOB sy-vline 
WA_DRAD_CL_STR-OBZAE sy-vline 
WA_DRAD_CL_STR-OBJKY sy-vline 
WA_DRAD_CL_STR-VRKSTAT sy-vline 
WA_DRAD_CL_STR-VRKSTAT1 sy-vline 
WA_DRAD_CL_STR-VOBJ sy-vline 
WA_DRAD_CL_STR-VKEY sy-vline 
WA_DRAD_CL_STR-VDIR sy-vline 
WA_DRAD_CL_STR-VIEWFLAG sy-vline 
WA_DRAD_CL_STR-DELFLAG sy-vline 
WA_DRAD_CL_STR-LONGTEXT_ID sy-vline 
WA_DRAD_CL_STR-CAD_POS sy-vline 
WA_DRAD_CL_STR-CM_FIXED sy-vline 
WA_DRAD_CL_STR-ARCHFLAG sy-vline 
WA_DRAD_CL_STR-DUMMY_DRAD_INCL_EEW_PS sy-vline 
WA_DRAD_CL_STR-BO_ALTKEY sy-vline 
WA_DRAD_CL_STR-DUMMY_CL sy-vline      INTO ld_text SEPARATED BY SPACE.

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